mercredi 4 mai 2016

Yoga Tab 2 8" 830f failed update led to soft lock

So I downloaded a 16mb OTA update and let the tablet do its thing without touching it. I waited for the tablet to boot up, but it was stuck in a black screen for about 12 minutes until I decided to turn it off and on. It didn't work, so I went to the recovery to do a factory reset and clear the cache, but it still didn't work. I later went to this Russian forum here from this thread. I downloaded a lollipop rom and proceeded to flash it using Phone Flash Tool Ver. 5.2. It went well until 16% in where it failed. Unfortunately, I don't have a screenshot of this.

image of the files in the rom I downloaded

After all this happened, I tried to start it up but I got the message "Boot Failed. EFI Hard Drive. Boot Successful - Enter Setup"



And now it won't go into recovery mode, but it does go into fastboot and bios setup.



Since it does go into fastboot, I tried to use a tool from this thread (Temp recovery) to use a temporary cwm recovery to hopefully be able to at least boot into that, but that didn't end up working.



I got another rom from the same Russian site that had differently packaged files but still the same stock lollipop rom.



I tried to just use the recovery from there to manually flash it using fastboot, but it still failed.



I later found this thread with these instructions for this problem.

Quote:

1. download and extract this file someplace on your pc
2. uninstall your existing Phone Flash Tool and from the drivers folder install both files (Intel Phone Flash Tool and Android Driver accepting defaults) reboot pc when finished
3. place your tab in DNX mode (from power off press and hold both volume keys then press pwr to start, in a few you screen will show "Fastboot starting..." message and hang on that. you must get that message on your tab screen, restart from power off until you have it)
4. start the installed Phone Flash Tool and load flash.xml from the extracted YT2-830L... folder then Start Flashing, it will reboot when done
The file he linked in his post (ionioni ) was gone but I still tried to do this with the roms I had. And guess what? It still didn't work. The instructions said to place the tablet in DNX mode (meaning fastboot), which I did do...only when I put it into fastboot, it was set to DNX_OS which came to say "Wrong device state" in Phone Flash Tool.



I've tried what I could, but failed. Anyone have any suggestions?


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