Can we summarize all the threads ?

[Guest cojocariuadrian]

So I have the 4.0.4 ICS.

 

I don't know all the terms like CFW and NAND and blahblah and I don't really have the time to read 300 pages of replies...

 

I want to update to the 4.1.2 or 4.2 JB

 

I did root the phone on 4.0.4, but it was a semi successful root, as superuser and overclocking worked fine, but things such as "change the extension of system files" would not work.

 

I now get the "This device is not allowed to update" error when I try the official airborne update.

 

I also need the WIFI G3 and GPS.

 

What can I do ? I tried to flash the zip files from SD but I constantly get the ro.product.device error.

 

Most links people are refering to are dead.

 

How do I flash a firmware ? Can't I just flash the official JB firmware ? 

How do I unroot my phone so that I can make the official update ? 

 

Please help

[Guest cojocariuadrian]

I managed to update to the 4.1.2 version with the PC installer, I just needed the right version of the firmware and most of the links were down, but I finally found one.

[Guest razvankim]

http://acercloudmobile.blogspot.ro - there you'll find tutorials : root , flash , recoveries etc..