diff --git a/arduino-core/src/processing/app/BaseNoGui.java b/arduino-core/src/processing/app/BaseNoGui.java
index 16b922caa..9bd0c62de 100644
--- a/arduino-core/src/processing/app/BaseNoGui.java
+++ b/arduino-core/src/processing/app/BaseNoGui.java
@@ -28,9 +28,9 @@ import static processing.app.I18n._;
 public class BaseNoGui {
 
   /** Version string to be used for build */
-  public static final int REVISION = 10602;
+  public static final int REVISION = 10603;
   /** Extended version string displayed on GUI */
-  static String VERSION_NAME = "1.6.2";
+  static String VERSION_NAME = "1.6.3";
 
   static File buildFolder;
 
diff --git a/build/build.xml b/build/build.xml
index f84b85dcd..4c4eab576 100644
--- a/build/build.xml
+++ b/build/build.xml
@@ -158,8 +158,8 @@
 
   <!-- copy hardware folder -->
   <target name="assemble-hardware" unless="light_bundle">
-    <mkdir dir="${staging_folder}/work/dist/bundled_package/packages/arduino/hardware/avr/1.6.2/"/>
-    <copy todir="${staging_folder}/work/dist/bundled_package/packages/arduino/hardware/avr/1.6.2/">
+    <mkdir dir="${staging_folder}/work/dist/bundled_package/packages/arduino/hardware/avr/1.6.3/"/>
+    <copy todir="${staging_folder}/work/dist/bundled_package/packages/arduino/hardware/avr/1.6.3/">
       <fileset dir="../hardware/arduino/avr/"/>
     </copy>
   </target>
@@ -365,10 +365,10 @@
   <target name="macosx-build-common-avr-toolchain" unless="light_bundle">
     <antcall target="avr-toolchain-bundle">
       <param name="unpack_target" value="untar"/>
-      <param name="gcc_archive_file" value="avr-gcc-4.8.1-arduino2-i386-apple-darwin11.tar.bz2"/>
-      <param name="gcc_version" value="4.8.1-arduino2/"/>
-      <param name="avrdude_archive_file" value="avrdude-6.0.1-arduino2-i386-apple-darwin11.tar.bz2"/>
-      <param name="avrdude_version" value="6.0.1-arduino2"/>
+      <param name="gcc_archive_file" value="avr-gcc-4.8.1-arduino3-i386-apple-darwin11.tar.bz2"/>
+      <param name="gcc_version" value="4.8.1-arduino3/"/>
+      <param name="avrdude_archive_file" value="avrdude-6.0.1-arduino3-i386-apple-darwin11.tar.bz2"/>
+      <param name="avrdude_version" value="6.0.1-arduino3"/>
     </antcall>
 
     <chmod perm="+x">
@@ -626,10 +626,10 @@
   <target name="linux32-build" depends="linux-build" unless="light_bundle" description="Build linux (32-bit) version">
     <antcall target="avr-toolchain-bundle">
       <param name="unpack_target" value="untar"/>
-      <param name="gcc_archive_file" value="avr-gcc-4.8.1-arduino2-i686-pc-linux-gnu.tar.bz2"/>
-      <param name="gcc_version" value="4.8.1-arduino2/"/>
-      <param name="avrdude_archive_file" value="avrdude-6.0.1-arduino2-i686-pc-linux-gnu.tar.bz2"/>
-      <param name="avrdude_version" value="6.0.1-arduino2"/>
+      <param name="gcc_archive_file" value="avr-gcc-4.8.1-arduino3-i686-pc-linux-gnu.tar.bz2"/>
+      <param name="gcc_version" value="4.8.1-arduino3/"/>
+      <param name="avrdude_archive_file" value="avrdude-6.0.1-arduino3-i686-pc-linux-gnu.tar.bz2"/>
+      <param name="avrdude_version" value="6.0.1-arduino3"/>
     </antcall>
 
     <exec executable="tar" dir="${staging_folder}/work/dist/bundled_package/">
@@ -646,10 +646,10 @@
   <target name="linux64-build" depends="linux-build"  unless="light_bundle" description="Build linux (64-bit) version">
     <antcall target="avr-toolchain-bundle">
       <param name="unpack_target" value="untar"/>
-      <param name="gcc_archive_file" value="avr-gcc-4.8.1-arduino2-x86_64-pc-linux-gnu.tar.bz2"/>
-      <param name="gcc_version" value="4.8.1-arduino2/"/>
-      <param name="avrdude_archive_file" value="avrdude-6.0.1-arduino2-x86_64-pc-linux-gnu.tar.bz2"/>
-      <param name="avrdude_version" value="6.0.1-arduino2"/>
+      <param name="gcc_archive_file" value="avr-gcc-4.8.1-arduino3-x86_64-pc-linux-gnu.tar.bz2"/>
+      <param name="gcc_version" value="4.8.1-arduino3/"/>
+      <param name="avrdude_archive_file" value="avrdude-6.0.1-arduino3-x86_64-pc-linux-gnu.tar.bz2"/>
+      <param name="avrdude_version" value="6.0.1-arduino3"/>
     </antcall>
 
     <exec executable="tar" dir="${staging_folder}/work/dist/bundled_package/">
@@ -901,10 +901,10 @@
   <target name="windows-build-avr-toolchain">
     <antcall target="avr-toolchain-bundle">
       <param name="unpack_target" value="unzip"/>
-      <param name="gcc_archive_file" value="avr-gcc-4.8.1-arduino2-i686-mingw32.zip"/>
-      <param name="gcc_version" value="4.8.1-arduino2/"/>
-      <param name="avrdude_archive_file" value="avrdude-6.0.1-arduino2-i686-mingw32.zip"/>
-      <param name="avrdude_version" value="6.0.1-arduino2"/>
+      <param name="gcc_archive_file" value="avr-gcc-4.8.1-arduino3-i686-mingw32.zip"/>
+      <param name="gcc_version" value="4.8.1-arduino3/"/>
+      <param name="avrdude_archive_file" value="avrdude-6.0.1-arduino3-i686-mingw32.zip"/>
+      <param name="avrdude_version" value="6.0.1-arduino3"/>
     </antcall>
   </target>
 
diff --git a/build/linux/avr-gcc-4.8.1-arduino2-x86_64-pc-linux-gnu.tar.bz2.sha b/build/linux/avr-gcc-4.8.1-arduino2-x86_64-pc-linux-gnu.tar.bz2.sha
deleted file mode 100644
index 74629b3b4..000000000
--- a/build/linux/avr-gcc-4.8.1-arduino2-x86_64-pc-linux-gnu.tar.bz2.sha
+++ /dev/null
@@ -1 +0,0 @@
-3e3afc1e383e9294b52ef492e57ecd7bf6d9e178
diff --git a/build/linux/avr-gcc-4.8.1-arduino3-i686-pc-linux-gnu.tar.bz2.sha b/build/linux/avr-gcc-4.8.1-arduino3-i686-pc-linux-gnu.tar.bz2.sha
new file mode 100644
index 000000000..8d3342ebe
--- /dev/null
+++ b/build/linux/avr-gcc-4.8.1-arduino3-i686-pc-linux-gnu.tar.bz2.sha
@@ -0,0 +1 @@
+b5909b44c80db8f895996fde3b160d8ee88c9287
diff --git a/build/linux/avr-gcc-4.8.1-arduino3-x86_64-pc-linux-gnu.tar.bz2.sha b/build/linux/avr-gcc-4.8.1-arduino3-x86_64-pc-linux-gnu.tar.bz2.sha
new file mode 100644
index 000000000..f829fef12
--- /dev/null
+++ b/build/linux/avr-gcc-4.8.1-arduino3-x86_64-pc-linux-gnu.tar.bz2.sha
@@ -0,0 +1 @@
+bf1c7b76f94f04fda16c4806971340ebfec95b07
diff --git a/build/linux/avrdude-6.0.1-arduino2-i686-pc-linux-gnu.tar.bz2.sha b/build/linux/avrdude-6.0.1-arduino2-i686-pc-linux-gnu.tar.bz2.sha
deleted file mode 100644
index 2d3615969..000000000
--- a/build/linux/avrdude-6.0.1-arduino2-i686-pc-linux-gnu.tar.bz2.sha
+++ /dev/null
@@ -1 +0,0 @@
-0f26245c3553d1a47815c7598b096a3266d22390
diff --git a/build/linux/avrdude-6.0.1-arduino2-x86_64-pc-linux-gnu.tar.bz2.sha b/build/linux/avrdude-6.0.1-arduino2-x86_64-pc-linux-gnu.tar.bz2.sha
deleted file mode 100644
index e4ba9aa48..000000000
--- a/build/linux/avrdude-6.0.1-arduino2-x86_64-pc-linux-gnu.tar.bz2.sha
+++ /dev/null
@@ -1 +0,0 @@
-3afa814b8902048a7aaa79cc5bdb7693f105bedf
diff --git a/build/linux/avrdude-6.0.1-arduino3-i686-pc-linux-gnu.tar.bz2.sha b/build/linux/avrdude-6.0.1-arduino3-i686-pc-linux-gnu.tar.bz2.sha
new file mode 100644
index 000000000..918c9fc7c
--- /dev/null
+++ b/build/linux/avrdude-6.0.1-arduino3-i686-pc-linux-gnu.tar.bz2.sha
@@ -0,0 +1 @@
+5694d3b4cf48af4ed53ae1d539518375cb649142
diff --git a/build/linux/avrdude-6.0.1-arduino3-x86_64-pc-linux-gnu.tar.bz2.sha b/build/linux/avrdude-6.0.1-arduino3-x86_64-pc-linux-gnu.tar.bz2.sha
new file mode 100644
index 000000000..875a4275d
--- /dev/null
+++ b/build/linux/avrdude-6.0.1-arduino3-x86_64-pc-linux-gnu.tar.bz2.sha
@@ -0,0 +1 @@
+c677e3ecc0e2b61144b096c8af34b2007d1ce2e3
diff --git a/build/macosx/avr-gcc-4.8.1-arduino2-i386-apple-darwin11.tar.bz2.sha b/build/macosx/avr-gcc-4.8.1-arduino2-i386-apple-darwin11.tar.bz2.sha
deleted file mode 100644
index 2b179789e..000000000
--- a/build/macosx/avr-gcc-4.8.1-arduino2-i386-apple-darwin11.tar.bz2.sha
+++ /dev/null
@@ -1 +0,0 @@
-08441692dc211f24e4378135ee541ab8f5327efd
diff --git a/build/macosx/avr-gcc-4.8.1-arduino3-i386-apple-darwin11.tar.bz2.sha b/build/macosx/avr-gcc-4.8.1-arduino3-i386-apple-darwin11.tar.bz2.sha
new file mode 100644
index 000000000..222afe7c0
--- /dev/null
+++ b/build/macosx/avr-gcc-4.8.1-arduino3-i386-apple-darwin11.tar.bz2.sha
@@ -0,0 +1 @@
+1cd9b024553e541d96a9e1dfca6c3c86e6b7b108
diff --git a/build/macosx/avrdude-6.0.1-arduino2-i386-apple-darwin11.tar.bz2.sha b/build/macosx/avrdude-6.0.1-arduino2-i386-apple-darwin11.tar.bz2.sha
deleted file mode 100644
index 89d229107..000000000
--- a/build/macosx/avrdude-6.0.1-arduino2-i386-apple-darwin11.tar.bz2.sha
+++ /dev/null
@@ -1 +0,0 @@
-bb75a633367ce959b567946e40021b88c356f105
diff --git a/build/macosx/avrdude-6.0.1-arduino3-i386-apple-darwin11.tar.bz2.sha b/build/macosx/avrdude-6.0.1-arduino3-i386-apple-darwin11.tar.bz2.sha
new file mode 100644
index 000000000..da429dab4
--- /dev/null
+++ b/build/macosx/avrdude-6.0.1-arduino3-i386-apple-darwin11.tar.bz2.sha
@@ -0,0 +1 @@
+d129a2f687828cda6784365bb0dd0e8689e7619b
diff --git a/build/shared/bundled_package_index.json b/build/shared/bundled_package_index.json
index e4658783e..61a2db3a7 100644
--- a/build/shared/bundled_package_index.json
+++ b/build/shared/bundled_package_index.json
@@ -48,9 +48,170 @@
               "version": "6.0.1-arduino2"
             }
           ]
+        },
+        {
+          "name": "Arduino AVR Boards",
+          "architecture": "avr",
+          "version": "1.6.3",
+          "category": "Arduino",
+          "url": "http://arduino.cc/download.php?f=/cores/avr-1.6.3.tar.bz2",
+          "archiveFileName": "avr-1.6.3.tar.bz2",
+          "checksum": "SHA-256:2909a4c6dd6d7497e7e1b5fcaa2f66a100271417510f3a68593b65af8ff78c1c",
+          "size": "4877442",
+          "boards": [
+            {"name": "Arduino Yún"},
+            {"name": "Arduino Uno"},
+            {"name": "Arduino Diecimila"},
+            {"name": "Arduino Nano"},
+            {"name": "Arduino Mega"},
+            {"name": "Arduino MegaADK"},
+            {"name": "Arduino Leonardo"},
+            {"name": "Arduino Micro"},
+            {"name": "Arduino Esplora"},
+            {"name": "Arduino Mini"},
+            {"name": "Arduino Ethernet"},
+            {"name": "Arduino Fio"},
+            {"name": "Arduino BT"},
+            {"name": "Arduino LilyPadUSB"},
+            {"name": "Arduino Lilypad"},
+            {"name": "Arduino Pro"},
+            {"name": "Arduino ATMegaNG"},
+            {"name": "Arduino Robot Control"},
+            {"name": "Arduino Robot Motor"}
+          ],
+          "toolsDependencies": [
+            {
+              "packager": "arduino",
+              "name": "avr-gcc",
+              "version": "4.8.1-arduino3"
+            },
+            {
+              "packager": "arduino",
+              "name": "avrdude",
+              "version": "6.0.1-arduino3"
+            }
+          ]
+        },
+        {
+          "name": "Arduino SAM Boards (32-bits ARM Cortex-M3)",
+          "architecture": "sam",
+          "version": "1.6.2",
+          "category": "Arduino",
+          "url": "http://arduino.cc/download.php?f=/cores/sam-1.6.2.tar.bz2",
+          "archiveFileName": "sam-1.6.2.tar.bz2",
+          "checksum": "SHA-256:2d3c8a90bc214947cff1b816d0c2706441398efc78af7984d5250f2e50eddd5f",
+          "size": "16174730",
+          "boards": [
+            {"name": "Arduino Due"}
+          ],
+          "toolsDependencies": [
+            {
+              "packager": "arduino",
+              "name": "arm-none-eabi-gcc",
+              "version": "4.8.3-2014q1"
+            },
+            {
+              "packager": "arduino",
+              "name": "bossac",
+              "version": "1.3a-arduino"
+            }
+          ]
+        },
+        {
+          "name": "Arduino SAM Boards (32-bits ARM Cortex-M3)",
+          "architecture": "sam",
+          "version": "1.6.3",
+          "category": "Arduino",
+          "url": "http://arduino.cc/download.php?f=/cores/sam-1.6.3.tar.bz2",
+          "archiveFileName": "sam-1.6.3.tar.bz2",
+          "checksum": "SHA-256:2d3c8a90bc214947cff1b816d0c2706441398efc78af7984d5250f2e50eddd5f",
+          "size": "16174730",
+          "boards": [
+            {"name": "Arduino Due"}
+          ],
+          "toolsDependencies": [
+            {
+              "packager": "arduino",
+              "name": "arm-none-eabi-gcc",
+              "version": "4.8.3-2014q1"
+            },
+            {
+              "packager": "arduino",
+              "name": "bossac",
+              "version": "1.3a-arduino"
+            }
+          ]
         }
       ],
       "tools": [
+        {
+          "name": "arm-none-eabi-gcc",
+          "version": "4.8.3-2014q1",
+          "systems": [
+            {
+              "host": "i686-mingw32",
+              "archiveFileName": "gcc-arm-none-eabi-4.8.3-2014q1-windows.tar.gz",
+              "url": "http://arduino.cc/download.php?f=/gcc-arm-none-eabi-4.8.3-2014q1-windows.tar.gz",
+              "checksum": "SHA-256:fd8c111c861144f932728e00abd3f7d1107e186eb9cd6083a54c7236ea78b7c2",
+              "size": "84537449"
+            },
+            {
+              "host": "x86_64-apple-darwin",
+              "url": "http://arduino.cc/download.php?f=/gcc-arm-none-eabi-4.8.3-2014q1-mac.tar.gz",
+              "archiveFileName": "gcc-arm-none-eabi-4.8.3-2014q1-mac.tar.gz",
+              "checksum": "SHA-256:3598acf21600f17a8e4a4e8e193dc422b894dc09384759b270b2ece5facb59c2",
+              "size": "52518522"
+            },
+            {
+              "host": "x86_64-pc-linux-gnu",
+              "url": "http://arduino.cc/download.php?f=/gcc-arm-none-eabi-4.8.3-2014q1-linux64.tar.gz",
+              "archiveFileName": "gcc-arm-none-eabi-4.8.3-2014q1-linux64.tar.gz",
+              "checksum": "SHA-256:d23f6626148396d6ec42a5b4d928955a703e0757829195fa71a939e5b86eecf6",
+              "size": "51395093"
+            },
+            {
+              "host": "i686-pc-linux-gnu",
+              "url": "http://arduino.cc/download.php?f=/gcc-arm-none-eabi-4.8.3-2014q1-linux32.tar.gz",
+              "archiveFileName": "gcc-arm-none-eabi-4.8.3-2014q1-linux32.tar.gz",
+              "checksum": "SHA-256:ba1994235f69c526c564f65343f22ddbc9822b2ea8c5ee07dd79d89f6ace2498",
+              "size": "51029223"
+            }
+          ]
+        },
+        {
+          "name": "bossac",
+          "version": "1.3a-arduino",
+          "systems": [
+            {
+              "host": "i686-linux-gnu",
+              "url": "http://arduino.cc/download.php?f=/tools/bossac-1.3a-arduino-i686-linux-gnu.tar.bz2",
+              "archiveFileName": "bossac-1.3a-arduino-i686-linux-gnu.tar.bz2",
+              "checksum": "SHA-256:d6d10362f40729a7877e43474fcf02ad82cf83321cc64ca931f5c82b2d25d24f",
+              "size": "147359"
+            },
+            {
+              "host": "x86_64-pc-linux-gnu",
+              "url": "http://arduino.cc/download.php?f=/tools/bossac-1.3a-arduino-x86_64-pc-linux-gnu.tar.bz2",
+              "archiveFileName": "bossac-1.3a-arduino-x86_64-pc-linux-gnu.tar.bz2",
+              "checksum": "SHA-256:c1daed033251296768fa8b63ad283e053da93427c0f3cd476a71a9188e18442c",
+              "size": "26179"
+            },
+            {
+              "host": "i686-mingw32",
+              "url": "http://arduino.cc/download.php?f=/tools/bossac-1.3a-arduino-i686-mingw32.tar.bz2",
+              "archiveFileName": "bossac-1.3a-arduino-i686-mingw32.tar.bz2",
+              "checksum": "SHA-256:a37727622e0f86cb4f2856ad0209568a5d804234dba3dc0778829730d61a5ec7",
+              "size": "265647"
+            },
+            {
+              "host": "i386-apple-darwin11",
+              "url": "http://arduino.cc/download.php?f=/tools/bossac-1.3a-arduino-i386-apple-darwin11.tar.bz2",
+              "archiveFileName": "bossac-1.3a-arduino-i386-apple-darwin11.tar.bz2",
+              "checksum": "SHA-256:40770b225753e7a52bb165e8f37e6b760364f5c5e96048168d0178945bd96ad6",
+              "size": "39475"
+            }
+          ]
+        },
         {
           "name": "avr-gcc",
           "version": "4.8.1-arduino2",
@@ -118,6 +279,74 @@
               "url": "http://arduino.cc/download.php?f=/tools/avrdude-6.0.1-arduino2-i686-mingw32.zip"
             }
           ]
+        },
+        {
+          "name": "avr-gcc",
+          "version": "4.8.1-arduino3",
+          "systems": [
+            {
+              "size": "24447175",
+              "checksum": "SHA-256:28e207c66b3dc405367d0c5e68ce3c278e5ec3abb0e4974e7927fe0f9a532c40",
+              "host": "i386-apple-darwin11",
+              "archiveFileName": "avr-gcc-4.8.1-arduino3-i386-apple-darwin11.tar.bz2",
+              "url": "http://arduino.cc/download.php?f=/tools/avr-gcc-4.8.1-arduino3-i386-apple-darwin11.tar.bz2"
+            },
+            {
+              "size": "30556996",
+              "checksum": "SHA-256:028340abec6eb3085b82404dfc7ed143e1bb05b2da961b539ddcdba4a6f65533",
+              "host": "x86_64-linux-gnu",
+              "archiveFileName": "avr-gcc-4.8.1-arduino3-x86_64-pc-linux-gnu.tar.bz2",
+              "url": "http://arduino.cc/download.php?f=/tools/avr-gcc-4.8.1-arduino3-x86_64-pc-linux-gnu.tar.bz2"
+            },
+            {
+              "size": "28768022",
+              "checksum": "SHA-256:37796548ba9653267568f959cd8c7ebfe5b4bce4599898cf9f876d64e616cb87",
+              "host": "i686-linux-gnu",
+              "archiveFileName": "avr-gcc-4.8.1-arduino3-i686-pc-linux-gnu.tar.bz2",
+              "url": "http://arduino.cc/download.php?f=/tools/avr-gcc-4.8.1-arduino3-i686-pc-linux-gnu.tar.bz2"
+            },
+            {
+              "size": "46046917",
+              "checksum": "SHA-256:d6f0527793f9800f060408392a99eb290ed205730edbae43a1a25cbf6b6b588f",
+              "host": "i686-mingw32",
+              "archiveFileName": "avr-gcc-4.8.1-arduino3-i686-mingw32.zip",
+              "url": "http://arduino.cc/download.php?f=/tools/avr-gcc-4.8.1-arduino3-i686-mingw32.zip"
+            }
+          ]
+        },
+        {
+          "name": "avrdude",
+          "version": "6.0.1-arduino3",
+          "systems": [
+            {
+              "size": "264682",
+              "checksum": "SHA-256:df7cd4a76e45ab3767eb964f845f4d5e9d643df950ec32812923da1e9843d072",
+              "host": "i386-apple-darwin11",
+              "archiveFileName": "avrdude-6.0.1-arduino3-i386-apple-darwin11.tar.bz2",
+              "url": "http://arduino.cc/download.php?f=/tools/avrdude-6.0.1-arduino3-i386-apple-darwin11.tar.bz2"
+            },
+            {
+              "size": "748634",
+              "checksum": "SHA-256:bb7bff48f20a68e1fe559c3f3f644574df12ab5c98eb6a1491079f3c760434ad",
+              "host": "x86_64-linux-gnu",
+              "archiveFileName": "avrdude-6.0.1-arduino3-x86_64-pc-linux-gnu.tar.bz2",
+              "url": "http://arduino.cc/download.php?f=/tools/avrdude-6.0.1-arduino3-x86_64-pc-linux-gnu.tar.bz2"
+            },
+            {
+              "size": "495482",
+              "checksum": "SHA-256:96a0cfb83fe0452366159e3bf4e19ff10906a8957d1feafd3d98b49ab4b14405",
+              "host": "i686-linux-gnu",
+              "archiveFileName": "avrdude-6.0.1-arduino3-i686-pc-linux-gnu.tar.bz2",
+              "url": "http://arduino.cc/download.php?f=/tools/avrdude-6.0.1-arduino3-i686-pc-linux-gnu.tar.bz2"
+            },
+            {
+              "size": "241619",
+              "checksum": "SHA-256:ea59bfc2ee85039c85318b2ba52c47ef0573513444a785b72f59b22586a950f9",
+              "host": "i686-mingw32",
+              "archiveFileName": "avrdude-6.0.1-arduino3-i686-mingw32.zip",
+              "url": "http://arduino.cc/download.php?f=/tools/avrdude-6.0.1-arduino3-i686-mingw32.zip"
+            }
+          ]
         }
       ]
     }
diff --git a/build/shared/revisions.txt b/build/shared/revisions.txt
index 06ef0442a..c95dc0292 100644
--- a/build/shared/revisions.txt
+++ b/build/shared/revisions.txt
@@ -1,4 +1,10 @@
 
+ARDUINO 1.6.3
+
+[ide]
+* Fixed an ArchiveExtractor issue when dealing with native stuff, affecting some linuxes
+* Upgrading toolchains: statically compiled, ship with Link Time Optimization plugin (disabled by defalt)
+
 ARDUINO 1.6.2 - 2015.03.28
 
 [ide]
diff --git a/build/windows/avr-gcc-4.8.1-arduino2-i686-mingw32.zip.sha b/build/windows/avr-gcc-4.8.1-arduino2-i686-mingw32.zip.sha
deleted file mode 100644
index 16258a357..000000000
--- a/build/windows/avr-gcc-4.8.1-arduino2-i686-mingw32.zip.sha
+++ /dev/null
@@ -1 +0,0 @@
-f75e7dd9276d3c3390b8499ad4a6db8154971e2c
diff --git a/build/windows/avr-gcc-4.8.1-arduino3-i686-mingw32.zip.sha b/build/windows/avr-gcc-4.8.1-arduino3-i686-mingw32.zip.sha
new file mode 100644
index 000000000..f8253b0e8
--- /dev/null
+++ b/build/windows/avr-gcc-4.8.1-arduino3-i686-mingw32.zip.sha
@@ -0,0 +1 @@
+9bd8b817f0b63896f58214ef8513df901816f4cf
diff --git a/build/windows/avrdude-6.0.1-arduino2-i686-mingw32.zip.sha b/build/windows/avrdude-6.0.1-arduino2-i686-mingw32.zip.sha
deleted file mode 100644
index f89b9b53b..000000000
--- a/build/windows/avrdude-6.0.1-arduino2-i686-mingw32.zip.sha
+++ /dev/null
@@ -1 +0,0 @@
-eb952dfdd4838a42806d22c6510e6d66b7cb96f9
diff --git a/build/windows/avrdude-6.0.1-arduino3-i686-mingw32.zip.sha b/build/windows/avrdude-6.0.1-arduino3-i686-mingw32.zip.sha
new file mode 100644
index 000000000..265192b58
--- /dev/null
+++ b/build/windows/avrdude-6.0.1-arduino3-i686-mingw32.zip.sha
@@ -0,0 +1 @@
+8764e67cea23a14041ff8f3fbe475b3048ade71e
diff --git a/hardware/arduino/avr/platform.txt b/hardware/arduino/avr/platform.txt
index 30167aa99..db3e26bb1 100644
--- a/hardware/arduino/avr/platform.txt
+++ b/hardware/arduino/avr/platform.txt
@@ -6,7 +6,7 @@
 # https://github.com/arduino/Arduino/wiki/Arduino-IDE-1.5---3rd-party-Hardware-specification
 
 name=Arduino AVR Boards
-version=1.6.2
+version=1.6.3
 
 # AVR compile variables
 # --------------------- 
diff --git a/hardware/arduino/sam/platform.txt b/hardware/arduino/sam/platform.txt
index 17435d74a..c9bc693b5 100644
--- a/hardware/arduino/sam/platform.txt
+++ b/hardware/arduino/sam/platform.txt
@@ -5,7 +5,7 @@
 # https://github.com/arduino/Arduino/wiki/Arduino-IDE-1.5---3rd-party-Hardware-specification
 
 name=Arduino ARM (32-bits) Boards
-version=1.6.2
+version=1.6.3
 
 # SAM3 compile variables
 # ----------------------
diff --git a/package_index.json b/package_index.json
deleted file mode 100644
index a19b4c00f..000000000
--- a/package_index.json
+++ /dev/null
@@ -1,218 +0,0 @@
-{
-  "packages": [
-    {
-      "name": "arduino",
-      "maintainer": "Arduino",
-      "websiteURL": "http://www.arduino.cc/",
-      "email": "packages@arduino.cc",
-      "platforms": [
-        {
-          "name": "Arduino AVR Boards",
-          "architecture": "avr",
-          "version": "1.6.2",
-          "category": "Arduino",
-          "url": "http://arduino.cc/download.php?f=/cores/avr-1.6.2.tar.bz2",
-          "archiveFileName": "avr-1.6.2.tar.bz2",
-          "checksum": "SHA-256:2909a4c6dd6d7497e7e1b5fcaa2f66a100271417510f3a68593b65af8ff78c1c",
-          "size": "4877442",
-          "boards": [
-            {"name": "Arduino Yún"},
-            {"name": "Arduino Uno"},
-            {"name": "Arduino Diecimila"},
-            {"name": "Arduino Nano"},
-            {"name": "Arduino Mega"},
-            {"name": "Arduino MegaADK"},
-            {"name": "Arduino Leonardo"},
-            {"name": "Arduino Micro"},
-            {"name": "Arduino Esplora"},
-            {"name": "Arduino Mini"},
-            {"name": "Arduino Ethernet"},
-            {"name": "Arduino Fio"},
-            {"name": "Arduino BT"},
-            {"name": "Arduino LilyPadUSB"},
-            {"name": "Arduino Lilypad"},
-            {"name": "Arduino Pro"},
-            {"name": "Arduino ATMegaNG"},
-            {"name": "Arduino Robot Control"},
-            {"name": "Arduino Robot Motor"}
-          ],
-          "toolsDependencies": [
-            {
-              "packager": "arduino",
-              "name": "avr-gcc",
-              "version": "4.8.1-arduino2"
-            },
-            {
-              "packager": "arduino",
-              "name": "avrdude",
-              "version": "6.0.1-arduino2"
-            }
-          ]
-        },
-        {
-          "name": "Arduino SAM Boards (32-bits ARM Cortex-M3)",
-          "architecture": "sam",
-          "version": "1.6.2",
-          "category": "Arduino",
-          "url": "http://arduino.cc/download.php?f=/cores/sam-1.6.2.tar.bz2",
-          "archiveFileName": "sam-1.6.2.tar.bz2",
-          "checksum": "SHA-256:2d3c8a90bc214947cff1b816d0c2706441398efc78af7984d5250f2e50eddd5f",
-          "size": "16174730",
-          "boards": [
-            {"name": "Arduino Due"}
-          ],
-          "toolsDependencies": [
-            {
-              "packager": "arduino",
-              "name": "arm-none-eabi-gcc",
-              "version": "4.8.3-2014q1"
-            },
-            {
-              "packager": "arduino",
-              "name": "bossac",
-              "version": "1.3a-arduino"
-            }
-          ]
-        }
-      ],
-      "tools": [
-        {
-          "name": "arm-none-eabi-gcc",
-          "version": "4.8.3-2014q1",
-          "systems": [
-            {
-              "host": "i686-mingw32",
-              "archiveFileName": "gcc-arm-none-eabi-4.8.3-2014q1-windows.tar.gz",
-              "url": "http://arduino.cc/download.php?f=/gcc-arm-none-eabi-4.8.3-2014q1-windows.tar.gz",
-              "checksum": "SHA-256:fd8c111c861144f932728e00abd3f7d1107e186eb9cd6083a54c7236ea78b7c2",
-              "size": "84537449"
-            },
-            {
-              "host": "x86_64-apple-darwin",
-              "url": "http://arduino.cc/download.php?f=/gcc-arm-none-eabi-4.8.3-2014q1-mac.tar.gz",
-              "archiveFileName": "gcc-arm-none-eabi-4.8.3-2014q1-mac.tar.gz",
-              "checksum": "SHA-256:3598acf21600f17a8e4a4e8e193dc422b894dc09384759b270b2ece5facb59c2",
-              "size": "52518522"
-            },
-            {
-              "host": "x86_64-pc-linux-gnu",
-              "url": "http://arduino.cc/download.php?f=/gcc-arm-none-eabi-4.8.3-2014q1-linux64.tar.gz",
-              "archiveFileName": "gcc-arm-none-eabi-4.8.3-2014q1-linux64.tar.gz",
-              "checksum": "SHA-256:d23f6626148396d6ec42a5b4d928955a703e0757829195fa71a939e5b86eecf6",
-              "size": "51395093"
-            },
-            {
-              "host": "i686-pc-linux-gnu",
-              "url": "http://arduino.cc/download.php?f=/gcc-arm-none-eabi-4.8.3-2014q1-linux32.tar.gz",
-              "archiveFileName": "gcc-arm-none-eabi-4.8.3-2014q1-linux32.tar.gz",
-              "checksum": "SHA-256:ba1994235f69c526c564f65343f22ddbc9822b2ea8c5ee07dd79d89f6ace2498",
-              "size": "51029223"
-            }
-          ]
-        },
-        {
-          "name": "bossac",
-          "version": "1.3a-arduino",
-          "systems": [
-            {
-              "host": "i686-linux-gnu",
-              "url": "http://arduino.cc/download.php?f=/tools/bossac-1.3a-arduino-i686-linux-gnu.tar.bz2",
-              "archiveFileName": "bossac-1.3a-arduino-i686-linux-gnu.tar.bz2",
-              "checksum": "SHA-256:d6d10362f40729a7877e43474fcf02ad82cf83321cc64ca931f5c82b2d25d24f",
-              "size": "147359"
-            },
-            {
-              "host": "x86_64-pc-linux-gnu",
-              "url": "http://arduino.cc/download.php?f=/tools/bossac-1.3a-arduino-x86_64-pc-linux-gnu.tar.bz2",
-              "archiveFileName": "bossac-1.3a-arduino-x86_64-pc-linux-gnu.tar.bz2",
-              "checksum": "SHA-256:c1daed033251296768fa8b63ad283e053da93427c0f3cd476a71a9188e18442c",
-              "size": "26179"
-            },
-            {
-              "host": "i686-mingw32",
-              "url": "http://arduino.cc/download.php?f=/tools/bossac-1.3a-arduino-i686-mingw32.tar.bz2",
-              "archiveFileName": "bossac-1.3a-arduino-i686-mingw32.tar.bz2",
-              "checksum": "SHA-256:a37727622e0f86cb4f2856ad0209568a5d804234dba3dc0778829730d61a5ec7",
-              "size": "265647"
-            },
-            {
-              "host": "i386-apple-darwin11",
-              "url": "http://arduino.cc/download.php?f=/tools/bossac-1.3a-arduino-i386-apple-darwin11.tar.bz2",
-              "archiveFileName": "bossac-1.3a-arduino-i386-apple-darwin11.tar.bz2",
-              "checksum": "SHA-256:40770b225753e7a52bb165e8f37e6b760364f5c5e96048168d0178945bd96ad6",
-              "size": "39475"
-            }
-          ]
-        },
-        {
-          "name": "avr-gcc",
-          "version": "4.8.1-arduino2",
-          "systems": [
-            {
-              "size": "24443285",
-              "checksum": "SHA-256:c19a7526235c364d7f62ec1a993d9b495973ba1813869ccf0241c65905896852",
-              "host": "i386-apple-darwin11",
-              "archiveFileName": "avr-gcc-4.8.1-arduino2-i386-apple-darwin11.tar.bz2",
-              "url": "http://arduino.cc/download.php?f=/tools/avr-gcc-4.8.1-arduino2-i386-apple-darwin11.tar.bz2"
-            },
-            {
-              "size": "27152002",
-              "checksum": "SHA-256:24a931877bee5f36dc00a88877219a6d2f6a1fb7abb989fd04556b8432d2e14e",
-              "host": "x86_64-linux-gnu",
-              "archiveFileName": "avr-gcc-4.8.1-arduino2-x86_64-pc-linux-gnu.tar.bz2",
-              "url": "http://arduino.cc/download.php?f=/tools/avr-gcc-4.8.1-arduino2-x86_64-pc-linux-gnu.tar.bz2"
-            },
-            {
-              "size": "25876628",
-              "checksum": "SHA-256:2d701b4efbc8cec62dc299cde01730c5eebcf23d7e4393db8cf7744a9bf1d3de",
-              "host": "i686-linux-gnu",
-              "archiveFileName": "avr-gcc-4.8.1-arduino2-i686-pc-linux-gnu.tar.bz2",
-              "url": "http://arduino.cc/download.php?f=/tools/avr-gcc-4.8.1-arduino2-i686-pc-linux-gnu.tar.bz2"
-            },
-            {
-              "size": "46046691",
-              "checksum": "SHA-256:2eafb49fb803fa4d2c32d35e24c0b372fcd520ca0a790fa537a847179e382000",
-              "host": "i686-mingw32",
-              "archiveFileName": "avr-gcc-4.8.1-arduino2-i686-mingw32.zip",
-              "url": "http://arduino.cc/download.php?f=/tools/avr-gcc-4.8.1-arduino2-i686-mingw32.zip"
-            }
-          ]
-        },
-        {
-          "name": "avrdude",
-          "version": "6.0.1-arduino2",
-          "systems": [
-            {
-              "size": "264965",
-              "checksum": "SHA-256:71117cce0096dad6c091e2c34eb0b9a3386d3aec7d863d2da733d9e5eac3a6b1",
-              "host": "i386-apple-darwin11",
-              "archiveFileName": "avrdude-6.0.1-arduino2-i386-apple-darwin11.tar.bz2",
-              "url": "http://arduino.cc/download.php?f=/tools/avrdude-6.0.1-arduino2-i386-apple-darwin11.tar.bz2"
-            },
-            {
-              "size": "292541",
-              "checksum": "SHA-256:2489004d1d98177eaf69796760451f89224007c98b39ebb5577a9a34f51425f1",
-              "host": "x86_64-linux-gnu",
-              "archiveFileName": "avrdude-6.0.1-arduino2-x86_64-pc-linux-gnu.tar.bz2",
-              "url": "http://arduino.cc/download.php?f=/tools/avrdude-6.0.1-arduino2-x86_64-pc-linux-gnu.tar.bz2"
-            },
-            {
-              "size": "283209",
-              "checksum": "SHA-256:6f633dd6270ad0d9ef19507bcbf8697b414a15208e4c0f71deec25ef89cdef3f",
-              "host": "i686-linux-gnu",
-              "archiveFileName": "avrdude-6.0.1-arduino2-i686-pc-linux-gnu.tar.bz2",
-              "url": "http://arduino.cc/download.php?f=/tools/avrdude-6.0.1-arduino2-i686-pc-linux-gnu.tar.bz2"
-            },
-            {
-              "size": "241618",
-              "checksum": "SHA-256:6c5483800ba753c80893607e30cade8ab77b182808fcc5ea15fa3019c63d76ae",
-              "host": "i686-mingw32",
-              "archiveFileName": "avrdude-6.0.1-arduino2-i686-mingw32.zip",
-              "url": "http://arduino.cc/download.php?f=/tools/avrdude-6.0.1-arduino2-i686-mingw32.zip"
-            }
-          ]
-        }
-      ]
-    }
-  ]
-}