When trying to update this message pops "Your device has been modified. Software updates are not available".
I did experiment with android operational system versions, but it was a long time ago, so I could not tell what exactly I did.
Right now it's running 4.1.2 version.
I already did some research, so I tell what I have already tried:
Resetting factory settings;
wiping cache partition;
updating while in safe mode;
unrooting it with several apps, but all of them say the device is not rooted;
there can't be any issues caused by SD card, because I don't own one on this device.
I would really appreciate your help
I did experiment with android operational system versions, but it was a long time ago, so I could not tell what exactly I did.
Right now it's running 4.1.2 version.
I already did some research, so I tell what I have already tried:
Resetting factory settings;
wiping cache partition;
updating while in safe mode;
unrooting it with several apps, but all of them say the device is not rooted;
there can't be any issues caused by SD card, because I don't own one on this device.
I would really appreciate your help