I think you should backup your modem/radio and also have full TB backup. If your phone screws, you have to reflash and restore all apps and config. Make sure your launcher backup is copied to ext sd card. Very painful until boot loader is unlocked.
Found this somewhere on cad on how to backup efs.Copy to the cloud for safe keeping
dd if=/dev/block/platform/msm_sdcc.1/by-name/modemst1 of=/storage/external_SD/modemst1.img
dd if=/dev/block/platform/msm_sdcc.1/by-name/modemst2 of=/storage/external_SD/modemst2.img
dd if=/storage/external_SD/modemst1.img of=/dev/block/platform/msm_sdcc.1/by-name/modemst1
dd if=/storage/external_SD/modemst2.img of=/dev/block/platform/msm_sdcc.1/by-name/modemst2[
Last edited by gsw5700; 28th July 2014 at 12:32 PM.