Find contentI send my unlocked and rooted Z3 to the sony repair center. They sent it back unrooted and updated to the latest bell firmware, I didn't check if my SIM worked or not at this point as I had a nandroid backup that I made before sending it in in case they decided to reset everything.
Steps:
Used flashtool to downgrade.
- downgraded phone with D6603_23.0.A.2.93 ftf on the XDA thread, first time bootloop due to drivers I think, reinstalled drivers and second time worked fine.
- ran giofroot exploit. used v3.1
- mounted /system rw with ES Explorer.
- installed Z3 Dualrecovery for locked BL.
Tried to restore my nandroid backup through recovery, system restored ok but got error 255 when restoring data. Bootloops when I tried to turn it on.
Flashed a clean build prerooted 23.4.A.1.232
This is where I noticed the SIM gets an invalid card message. Checked service menu for sim lock
it reads [ ] network 0 so it seems to me like SIM lock is not the problem.
At this point I tried downgrading using flashtool again to start from the beginning but it hasn't worked. Googled this problem but there was no definitive solution in any posts that I have encountered.
How can I roll back? what measurements can I take to better understand the problem?
