need help updating

[tangocharlie]

hi all.... i need suggestions on how to update to the JB 4.1.2 from JB 4.1.1 on a rooted galaxy nexus....if i can do it without losing data it will be of greater help... its rooted to TWRP. and also is it possible to root it to cynogen mod from TWRP..?? i am new to all this so i am in a desperate helpless situation. please help me.....

 

[Hadron]

What GNex variant do you have - GSM, Verizon...? Best place to ask would be the corresponding All Things Root forum.

You shouldn't accept an over the air update on a rooted phone, but anything worthwhile will be incorporated into custom ROMs very quickly. But you need to discuss details with the people who know your device.