mardi 25 août 2015

[Q] Internal memory broken?



Hi everyone,

I've got a Galaxy Nexus in use since approx. 2 years and update it to the latest CM from time to time. I also flashed Ziyan's beta build (08/06),
but honestly, I dont't think that’s the crux of the matter.

Let me begin with the error pattern:
One day, my Nexus was not in use and only lay on the table, it crashed an rebooted. That happened occasionally, so it seemed like nothing to worry.
Unfortunately the system kept on crashing on every attempt to boot after this or crashed shortly after finishing boot.
This repeated over several hours.

Once in a while, the system managed to stay alive for a few minutes and I was able to browse the settings for example. Doing so, I noticed that it responded normally for about 5 seconds and then froze for 5 seconds alternatingly.
I then tried to flash a backup or rather the latest rom again.

Then it became awkward:
In the beginning I was unable to aquire writing permissions (rw) and only had reading permissions (ro) on my /sdcard. Even adb remount didn't change this.
An attempt to fix permissions in TWRP recovery broke with an error.
I couldn't even access the sideload due to missing write permissions.
Surprisingly, I was able to adb push the rom to /cache partition since I still had rw permissions on /cache and /system and therefore successfully flashed the rom subsequently.
When I checked my permissions again, I regained rw permissions on all partitions.

Trying to reboot my system, it kept on crashing like before, which led me to format the internal memory completely.
According to TWRP the whole memory was deleted completely and I adb pushed an older rom (CM 11) and flashed it.
To my astonishment, I found my phone boot the old rom again, all data was restored and it still crashed like nothing happened to the memory.

I then tried to delete all files manually and flashed the stock rom, even unrooted, all with the same outcome.
After every attempt to change something, Ziyans rom remained on the phone, also the /sdcard data was still there.
What I found noteworthy was the recovery telling me, all the operations completed succesfully everytime and until I restarted the phone, it indeed showed no files remaining after formatting (though, I couldn't change the filesystem).

To put it all in a nutshell:
Memory delete, format or overwrite doesn't work any longer

I am totally out of options and would appreciate suggestions =)

Greetings,
Kosmo$



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