I have a big problem. I changed my build.prop with ES FE (rooted with CF-Auto-Root):
from "ro.com.google.clientidbase=android-samsung" to "ro.com.google.clientidbase=android-tmobile-de"
The Problem is:
I have Reactivation lock enabled & i'm on stock recovery.
So i'm not able to flash the rom again or a custom recovery because of the reactivation lock.
Also I can't fix permissions via stock recovery.
I think the only way out is to wipe my device. (This should restore the original build.prop?!)
But then i loose my data. Is there a way to make a backup of my personal data in this situation or to access the system folder?
EDIT 1: USB-Debugging is turned on, i'll install adb on my computer and try if i'm able to talk to my phone...
EDIT 2: It's not possible to access the system via adb. The only way i can establish a connection via adb is with the "adb sideload" menu of the stock recovery. If i boot until the samsung logo my computer recognizes the phone as an mtp device (unfortunately it doesnt show up in explorer) and the device manager says that there is no adb interface connected.
EDIT 3: I tried to install philz/twrp and cwm s5 port on my phone via stock recovery. It didn't work: "Footer is wrong" + "File verification failed". Is there any way to save my data? (Pictures?)