System and Kernel Downloads

The following downloads give you access to factory system images and the kernel source code for Glass.

Factory images

The following images allow you to gain root shell access on your Glass and flash it back to factory specifications.

Warning: Rooting, unlocking, or flashing your Glass voids your warranty and can leave your device in an irrecoverable state. Proceed at your own risk.

Warning: The system images for XE9 and earlier are no longer available due to a firmware change with XE10. If your device has XE10 or later installed, flashing to XE9 or earlier will brick your device.

Version	Factory System Image	Rooted Bootloader	SHA-1 Checksum
XE24	signed-glass_1-img-5585826.zip	boot.img	System image 46430bc827267796566f0a73d9b503059759561c Boot image 4e582d8db3cf2f21c3e74a73f76cb5796a2ac4d9
XE23	signed-glass_1-img-3926992.zip	boot.img	System image 8a3357ced69e3e6919f10abf39bed2e3b5d6abc8 Boot image caf34de6d83b8fadeb5995bdcfe8dfadb722110e
XE22	signed-glass_1-img-1511057.zip	boot.img	System image 74d87d1bba917c45db1a3fc35af7ddc485c0ea94 Boot image ae713187ee619dd3b24e2caf650b9b7bcb68305b
XE21.3	signed-glass_1-img-1460130.zip	boot.img	System image ab61716975a35ec6fb3817277e2054f228316276 Boot image d300bace661516f43a889cc2214fd89bd60fbd0a
XE21	signed-glass_1-img-1410200.zip	boot.img	System image f1ebe4867b1dfbcb7c7934cdda576a7e4512732f Boot image 81a1308ac186ae750a914c4524e9f366acb496b5
XE20.1	signed-glass_1-img-1356845.zip	boot.img	System image 1ef9dfcea33eec49f33a46b299e158283cd39faf Boot image 862f7c11c7be73cbb22f6c505ce6362fba023ecf
XE19.1	signed-glass_1-img-1279109.zip	boot.img	System image dc9212e2ed47719fd324a9eb55783db48e62b602 Boot image b2f8cd0c0466c329db498134d89829f8c2b33ec0
XE18.3	signed-glass_1-img-1252257.zip	boot.img	System image 985b40dc2052b0c3519ac4a19e8c8b7a65e221f4 Boot image 8a342b9d31f11682e2ffe5506c1f308e6326e8e1
XE18.11	signed-glass_1-img-1223935.zip	boot.img	System image 244588518776d2ca05b18fd0efcc558909b9a27a Boot image 1c548c7904e2502069f0c5744e32ed6d835c47a5
XE18.1	signed-glass_1-img-1218353.zip	boot.img	System image ba95dfb09b48bc6ef4a7cc8e1717be5f0c4660cf Boot image b8bee85c32031733c2a0a155ac435fdf9e442932
XE17.31	signed-glass_1-img-1216444.zip	boot.img	System image 88e6e64c463a1b453eeb4eebaf601ad217c31f60 Boot image b7a8ab807342d403478323949cae44dc2c3f7147
XE17.3	signed-glass_1-img-1202243.zip	boot.img	System image f4a63bc29aa723e8627be3ecdcadf0e4638ed510 Boot image cadcda1ab438c40feba58773d1a35ae5e6033a60
XE17.2	signed-glass_1-img-1180275.zip	boot.img	System image 8c9e7b3cadda41b9f889693a9e23a984e32488b1 Boot image 15d672c222380ba2095ee5513a547eb2f4183d99
XE17.1	signed-glass_1-img-1163488.zip	boot.img	System image 0efff5f93690edf05ca4afd57b97c19a1f1eb773 Boot image 4bfd575664ae8eb1ee5dfe5ac26d069ea84ecc31
XE17	signed-glass_1-img-1152835.zip	boot.img	System image 540d7d92a033434795e842156542ee1c70d708f1 Boot image be588f1ebc1ce3d4cb69bfacc6b4cae1dca7b077
XE16.2	signed-glass_1-img-1140829.zip	boot.img	System image 34a42d37a73bd7bc9b872c87296ecbf616693e45 Boot image 28091b99009ce94ad43fc2deb6cbccd9208766b4
XE16.11	signed-glass_1-img-1134415.zip	boot.img	System image 600a11663ba3e8f1e98ca83b33b3df700ca46005 Boot image c0fa67cbf6271cc921288566ae7b8d1e91bb76b7
XE16	signed-glass_1-img-1124447.zip	boot.img	System image 5bef469cbfd072ad4e840921966957687a0623c0 Boot image 32d1fa31d5d61f3ab42f333192b19d5ef793235f
XE12	signed-glass_1-img-947604.zip	boot.img	System image 4676661de963b5436f60172ec63b126f11cb4373 Boot image e077caa5903b6b17a9f8ba9b4db2b554ee7e0597
XE11	glass_1-img-901188.zip	boot.img	System image 4489441a7eaa3932d45fb0c43df5907cc09ac769 Boot image 6e5b021f8987c348171c7649a20230b60ed2f7ed
XE10	glass_1-img-851153.zip	boot.img	System image 6d682c6d9e8a97c1fd98cc31bfcdb8d17e87cee2 Boot image 54f573d5f66c0855e3ac25c25627a8a7e25d73e2

Note: Entering fastboot mode with adb reboot bootloader requires that the device is booted and has debugging turned on. You can also enter fastboot mode by holding down the camera button, pressing the power button (Glass must be off before doing this), and waiting about 10-15 seconds. Glass does not indicate that it is in fastboot mode (display is off), but you can run fastboot devices to check.

To gain root shell access on Glass, run the following commands using the rooted bootloader:

$ adb reboot bootloader  # enter fastboot mode, takes 10-15 seconds
$ fastboot devices  # verify device is in fastboot, should see its serial #
$ fastboot oem unlock  # unlocking erases all data, you are prompted to run this command twice to be sure
$ fastboot flash boot boot.img  # gain root shell access with the rooted bootloader
$ fastboot reboot  # reboot the device
$ adb root  # start adb as root
$ adb shell  # access the shell as root

To flash Glass back to factory specifications, extract the desired factory system image package and run the following commands:

$ adb reboot bootloader  # enter fastboot mode
$ fastboot devices # verify device is in fastboot, should see its serial no.
$ fastboot flash boot boot.img  # flash partitions with factory images
$ fastboot flash system system.img
$ fastboot flash recovery recovery.img
$ fastboot erase cache  # optional, erase the cache and userdata partitition
$ fastboot erase userdata
$ fastboot oem lock    # optional, only if you want to re-lock the bootloader.

Note: To obtain the adb and fastboot commands, download the Android SDK Platform-tools from the Android SDK Manager. Go to developer.android.com for more information.

Kernel source code

You can browse the kernel source code or check out and build the kernel source code by running the following commands.

Note: For more information about downloading and building the kernel, see source.android.com.

1. Download the source:

   $ mkdir <path-for-kernel-source>
   $ cd <path-for-kernel-source>
   $ git clone https://android.googlesource.com/kernel/omap.git
   

   Note: The git clone command creates a <path-for-kernel-source>/omap directory.

2. Download a prebuilt gcc:

   $ git clone https://android.googlesource.com/platform/prebuilt
   $ export PATH=<path-for-kernel-source>/prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/bin:$PATH
   

3. Build the kernel:

   $ export ARCH=arm
   $ export SUBARCH=arm
   $ export CROSS_COMPILE=arm-eabi-
   $ cd <path-for-kernel-source>/omap
   $ git checkout glass-omap-xrr02
   $ make notle_defconfig
   $ make