Originally Posted by Katdragon
My Galaxy Nexus decided to factory reset itself for no apparent reason. Since everything has vanished into the ether (apart from the Google play list of apps which I'll apparently have to re-download and my contacts list) I thought it might be a good idea to upgrade from Jellybean 4.1.2 to 4.3.
I've used NRT to back up the contact list (no messages or photos are left) and my apps are on the Cloud (at least they say I need to install them when I go through the play store) .
I've had a look around the forums for guides (I generally try to RTFM before I ask for help) but I'm rather confused.
Is there a specific guide that will give me step-by-step instructions on how to upgrade from 4.1.2 to 4.3? I've had a look at http://forum.xda-developers.com/show....php?t=2010312
but because I'm a complete and utter n00b I don't know whether or not it's the right procedure.
First, read a bunch on this topic. This guide right here will walk you through rooting and upgrading your OS: http://galaxynexusroot.com/
. Here is more info: http://wiki.rootzwiki.com/Samsung_Ga...xus_%28toro%29
Also, not sure which version of the gnex you have. but if you have the american verizon version (toro), this guide will walk you through step by step and includes all the files for a basic vanilla version of 4.3: http://rootzwiki.com/topic/36706-rom...ls36i-no-bugs/
Once you install one rom, you can install any. Some of the more popular are cyanogenmod and aokp.
Basically what you are going to do is unlock your phone, install a back up program like clockworkmod, then install a new operating system (rom), gapps (google apps like gmail), and update your radios to 4.2. These guides should walk you through. Its actually pretty easy on the gnex.
Also as for backup, i personally use mybackup and others like titaniumbackup. I think titanium requires root but mybackup does not. Google also should update your contacts/apps for you automatically.