Originally Posted by easylistener
OK I think I figure it out because of reading all the other post....It looks like the files were removed when they came out with the JB guide of doing it....So my question is then I should update to the 4.1 update then follow the guide over on mobi for the JB correct? I would really like someone to offer some suggestions before I go ahead and update and screw myself.....
Yes, you would be best off updating to the latest official 4.1.1 version (10.4.2.18) and using the guides and files designed for JB to make your NVFlash backups
Do read the official guide but there is also a clearer and more detailed guide to NVFlash for JellyBean HERE
Note: it does say you need the 10.4.2.15 bootloader but the method and files work fine on the 10.4.2.18 also.
Do read the instructions carefully as the prime is a lot easier to brick than the other devices you have experience on.
Nexus 4 Stock Android 4.4.2
Asus Transformer Prime flying along on HairyBean 2.31