I have an issue if I may pick some brains, I have an idea on how to resolve it, but first the background:
I unlocked and rooted my wife's M just like mine before the update. She was bone stock of course, flashed TWRP 2.5 like my own, backed up her stock rooted JB 4.1.2 pre update. I wanted to make sure she wouldnt accidentally install the update so I froze the updater package. I wanted to get her the better radios and get the update on her phone, so I protected Root with Voodoo OTA root keeper, and proceeded to install the update. **(When I did the update, it went to TWRP installed, had the last 2 lines fail, like others, but installed the .78 but did not flash new radio, I flashed it separately, and I am up to date radios and .78 system.) I got an error for verifying system on my Wife's M for system/apps/GMS_Maps (and I couldnt read the rest) So, I looked and she has all the stock apps, nothing else frozen, uninstalled, nothing. I dont know why it would fail on that.
My question is, Can I go back to my stock rom and pull the GMS_Maps.apk and copy to her system/apps folder to see if it will take the update that way? Otherwise, I dont know what else could be causing her update to fail. I even tried to reflash stock recovery and install that way, same result. OR Could I back up just her data, use matts Utility to back to bone stock fresh, install ota, keep root, get update, THEN would I be ok if I restored the Data only backup?
I been flashing and doing this stuff for a while, and know the steps and made sure each were covered.....Just at a loss right now.