Android 4.2 is out for couple of days now. Yesterday morning I got OTA notification to upgrade it on my Galaxy Nexus GSM.
As excited I could be, I went for it, mobile rebooted to recovery mode. After a bit of cranking and all, boom! it failed
to update the system with some error message. I was like WTF! I rebooted the phone and I was anticipating that it
would have some how installed 4.2 Alas, no that was not the case. I tried OTA couple of times again but in vain.
So resorted to Google and found that OTA packages are available to download. Followed the article on slashgear and XDA forum.
All that failed I kept on getting error message
assert failed : apply_patch_check ("/system/build.prop" something
I tried something new this time, I decided to install factory image. List of factory images for nexus device is found
at Google Nexus site I went for 4.2 (JOP40C). Yes this is a 261+ MB in size.
In short, if you follow the steps given below you should be able to update your GNex to 4.2 without rooting it or OEM unlock. You don’t even need to install CWM (clockworkmod) etc.
I am using ubuntu 12.04 with android SDK installed. Which implies you would have
You can check for that in platform-tools folder in your android sdk path. On Ubuntu I suppose you don’t need to install
any sort of device drivers.
These steps may work on Windows as well, although with minor modification, you should have device drivers,
fastboot installed. Note that
tz file has
.bat file. So I assume if you have adb and fastboot in System
Path. All you need to do is run
Please note that these steps would wipe out all the data from your phone. Consider taking a backup of data. This may even brick your phone.
- Unzip content of
- boot your phone to bootloader
- install bootloader
- reboot to bootloader
- flash takju image to phone
Essentially above steps are in
flash-all.sh did not work for me because for some reason
up for me only when I sudo.
In short you would fire following commands in the sequence below
fastboot flash bootloader bootloader-maguro-primelc03.img fastboot reboot-bootloader fastboot flash radio radio-maguro-i9250xxlh1.img fastboot reboot-bootloader fastboot -w update image-takju-jop40c.zip
I copied the content of
platform-tools folder before starting up with the above commands for ease of referencing the files.
log of my system below for reference.
$ adb reboot-bootloader $ sudo ./fastboot flash bootloader bootloader-maguro-primelc03.img sending 'bootloader' (2308 KB)... OKAY [ 0.581s] writing 'bootloader'... OKAY [ 0.653s] finished. total time: 1.234s $ sudo ./fastboot reboot-bootloader rebooting into bootloader... OKAY [ 0.006s] finished. total time: 0.006s $ sudo ./fastboot flash radio radio-maguro-i9250xxlh1.img sending 'radio' (12288 KB)... OKAY [ 3.092s] writing 'radio'... OKAY [ 1.638s] finished. total time: 4.730s $ sudo ./fastboot reboot-bootloader rebooting into bootloader... OKAY [ 0.006s] finished. total time: 0.006s $ sudo ./fastboot -w update image-takju-jop40c.zip archive does not contain 'boot.sig' archive does not contain 'recovery.sig' archive does not contain 'system.sig' -------------------------------------------- Bootloader Version...: PRIMELC03 Baseband Version.....: I9250XXLH1 Serial Number........: 0149C7A508017004 -------------------------------------------- checking product... OKAY [ 0.007s] checking version-bootloader... OKAY [ 0.008s] checking version-baseband... OKAY [ 0.008s] sending 'boot' (4400 KB)... OKAY [ 1.108s] writing 'boot'... OKAY [ 0.398s] sending 'recovery' (4900 KB)... OKAY [ 1.248s] writing 'recovery'... OKAY [ 0.707s] sending 'system' (436723 KB)... OKAY [110.300s] writing 'system'... OKAY [ 42.772s] erasing 'userdata'... OKAY [ 1.122s] formatting 'userdata' partition... Creating filesystem with parameters: Size: 14539534336 Block size: 4096 Blocks per group: 32768 Inodes per group: 8144 Inode size: 256 Journal blocks: 32768 Label: Blocks: 3549691 Block groups: 109 Reserved block group size: 871 Created filesystem with 11/887696 inodes and 97200/3549691 blocks sending 'userdata' (137559 KB)... writing 'userdata'... OKAY [ 46.028s] erasing 'cache'... OKAY [ 0.044s] formatting 'cache' partition... Creating filesystem with parameters: Size: 452984832 Block size: 4096 Blocks per group: 32768 Inodes per group: 6912 Inode size: 256 Journal blocks: 1728 Label: Blocks: 110592 Block groups: 4 Reserved block group size: 31 Created filesystem with 11/27648 inodes and 3566/110592 blocks sending 'cache' (8832 KB)... writing 'cache'... OKAY [ 4.060s] rebooting... finished. total time: 207.843s
After completion phone would reboot automatically. Please leave a comment if you this works for you or not.