Originally Posted by loerkus

Is it poosible to lock and unroot an previously rooted A511? I am not 100% satisfied with the display and would like sending back my a511 and wait for a701.

Easiest methods:

Lock = install new ROM (FOTA, if available, or the 1.011 rom and then do FOTA)
Unroot = install new ROM (although that may not cleanup every trace) or factory reset (which is the best method -- but will wipe ALL your data)
Recovery = not possible yet - I don't recall seeing a stock-A511-recovery yet... you can try putting the A510 recovery on (I did that, it seemed to not work but at least wipes away most of the traces of your hack-attempt)

Regards,

Nika.

FOTA says my ROM is up-to-date. So I have to flash. I downloaded from the Stock-ROM forum Acer_AV041_A511_1.011.00_WW_GEN1.zip. But how can I flash it? Sorry to bother you but I don't want to brick my a511.

Originally Posted by loerkus

FOTA says my ROM is up-to-date. So I have to flash. I downloaded from the Stock-ROM forum Acer_AV041_A511_1.011.00_WW_GEN1.zip. But how can I flash it? Sorry to bother you but I don't want to brick my a511.

I have downgraded twice with that ROM. Just rename it to update.zip, make sure the bootloader is unlocked and copy the zip to your external sdcard and reboot into recovery. It will start the downgrade automatically, reboots, will republish your apps (or something like that) and then you can do the FOTA to move up to 1.034 (I think - can't check as my tab is dead...).

Regards,

Nika.

Originally Posted by nikagl

I have downgraded twice with that ROM. Just rename it to update.zip, make sure the bootloader is unlocked and copy the zip to your external sdcard and reboot into recovery. It will start the downgrade automatically, reboots, will republish your apps (or something like that) and then you can do the FOTA to move up to 1.034 (I think - can't check as my tab is dead...).

Regards,

Nika.

Thanks. Now in CWM I get the error:

...
...
Installing update...
assert failed: getprop("ro.product.name") == "a511_ww_gen1"
E:Error in /sdcard/update.zip
(Status 7)
Installation aborted

Originally Posted by loerkus

Thanks. Now in CWM I get the error:

...
...
Installing update...
assert failed: getprop("ro.product.name") == "a511_ww_gen1"
E:Error in /sdcard/update.zip
(Status 7)
Installation aborted

what is your actual firmware region ?
WW, EMEA or PA ?

Originally Posted by loerkus

Thanks. Now in CWM I get the error:

...
...
Installing update...
assert failed: getprop("ro.product.name") == "a511_ww_gen1"
E:Error in /sdcard/update.zip
(Status 7)
Installation aborted

That means you don't have a ww_gen1 A511 device. Yours is probably German (for instance A511_EMEA_DE). You can check that in your device.prop file.

The following is on another forum (translated from Russian):

Originally Posted by acer-club

On the firmware from another region will be ask only through Customise recovery (someone here wrote that your machines already have this), after removing the check of the firmware from the archive in the installation script (/ META-INF/com/google/android / updater-script) - something like this in the beginning of the installation script:

assert (getprop ("ro.product.name") == "a510_emea_cus1");

this part of the "a510_emea_cus1" on different firmware will be different. Remove all the line.
By necessity, that would not lose the unlock, you need to remove the fill from the new firmware bootloader'a (bootloader.blob file in the root of the archive firmware) and disable the recovery of stock recovery (file / system / etc / install-recovery.sh in the archive or rename the firmware removed), otherwise the whole tablet, and overwrite the unlock will be stitched completely stock firmware.
Next, fill up this way obtained the firmware on the SD card and flashed it through Customise recovery (recovery through the stock it does not work!).

It contains some info on what to do, but I think that's way to risky. It did also contain a good hint how to revert recovery! Try to rename the "install-recovery.sh" file back. It's either renamed by the script you executed for root or part of the instructions on how to install the cwm recovery. After this, try to boot a few times and I assume both the recovery and possibly even the unlocked bootloader will be reverted to stock! In that case you can also simply do a factory reset and it will remove the root as well

Rooting via the mempodroid exploid on Acer_AV041_A510_RV28RC02_WW_GEN1 worked as far as I can see (SuperUser and Titanium Backup install and run alright).

Only problem I see is that apps like Titanium Backup and ES File explorer are not able to mount /system as rw and thus are a little limited in there actions. They do not complain on gaining su, that works.

(Re)mount commands via adb shell:

mount -o remount,rw /system
mount -o remount,ro /system

do work as expected.

Any idea's on what is wrong / missing and how to correct it?

Edit:
It seems that a rw mount on / is going OK ???

i used aio tool and rooted and unlocked bootloader...2 questions:

1- how to install a rom now?
2- if i want, can i lock again bootloader and remove root in order to avoid acer assistence troubles?
if i can0t remove it, can i just leave it there? can i install any fota if acer releases it? or acer invalidates guarantee if i need it?