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Audiheizer schrieb:So gehts zurück auf Android 4.2.2 Jelly Bean laut Acer Support:
1- Go to Acer's support page > Drivers and manuals > Choose your device model > Choose OS tab > Download the OS corresponding your region.
2- Copy the "update.zip" file to an external SD card and insert in the device.
3- While turned off, press and hold the volume up button and then power button for three seconds. Let go when the screen lights up.
4- Now you should be looking at the recovery mode menu. Navigate using volume buttons and choose "apply update from external storage" and browse for your "update.zip" file.
5- The tablet will now install the OS, reboot and go through the first time using setup.
Unfortunately, all of the data on the tablet will be lost.
Danke!
habe eben auch eine Supportanfrage an Acer verschickt. ich warte noch auf deren Antwort, aber dann werde ich es vermutlich so machen