Urgent help please. the april 2016 patch was downloaded on the air and I performed update but after restart, The bot screen came with "error" and then the red error message is shown directing me to g.CO/ABH in which flashing is suggested. note after restarting, many applications together with settings app crash. I performed the OTA update again and no chance. Is there any solution except flashing? if the answer is no, so how can I perform a full backup before flashing? My serious aim is no data loss. ftp works through wireless but too slow. the usb mass storage function shows an empty folder on PC. USB debugging is connected but adb shows no device. Also in bootloader mode adb shell failed. The device is not rooted and recovery is locked. Here's the brief last log:
Source: shamu:6.0.1/MMB29V/2554798:user/release-keys Target: shamu:6.0.1/MMB29X/2704508:user/release-keys .. performing verification using existing stash /cache/recovery/..... deleting recovery /cache/recovery/---/-- ..bytes free on /cache (.. bytes needed) failed to verify blocks (expected ..., read...) stat "/cache/...." failed: No such file or directory partition has unexpected contents failed to read block for diff failed to execute command [.....] deleting stash 5a79.... script aborted: system partition has unexpected contents E:Error in @/cache/recovery/block.map (Status 7)
Now tried to update from sdcard (stock rom downloaded for nexus) in recovery mode, got: E:unknown volume for path [/sdcard]
-- Couldn't mount /sdcard. Installation aborted
Repeated my try to update from ADB (adb sideload) but this error in the log: sideload-host file size 1009749527 block size 65536 Finding update package.. I:Update location: /sideload/package.zip Opening update package... I: read key e=65537 hash=20 I: 1 key(s) loaded from /res/keys Verifying update package... E: footer is wrong I:verify_file returned 1 E:signature verification failed sideload_host finished Installation aborted
I'm not sure even after data wipe the error remains or not, so prefer not to wipe yet, because the phone works! Should I give up?