I've been searching for a while and haven't found this problem anywhere so I wanted to start a thread about it. I have a 1520.3 (Latin America variant), was using the dev preview. Yesterday I reverted back to 8.0 to get official Cyan. Everything went alright, updates installed and rebooted, etc. Once on 8.1, I hard reset the phone to get my backup. When the phone came back up I noticed it was in airplane mode. No problem, I thought, just switch that off. When I do that, it constantly switches on/off EXTREMELY fast, and will not stop until I turn it on again in the action center. It's like my cellular connection will not turn on at all. When it's switching on and off, the phone gets very hot and I need to reboot. When it comes back up it's still stuck in airplane mode.
I've tried soft resets and hard resets and they don't work. I'm starting to think this is a Cyan firmware problem with this phone. When I revert back to 8.0 via the Software Recovery Tool, everything works great. I reverted back this morning and I'm on 8.0 with LTE on AT&T. I've tried just about every fix combination I can think of in regards to the SIM (reset with/without SIM in, turn off and put SIM in, put SIM in and reboot, etc) but nothign works. Again, this is not a hardware problem since everything works on 8.0. Has anyone else seen this problem with their 1520?
I've tried soft resets and hard resets and they don't work. I'm starting to think this is a Cyan firmware problem with this phone. When I revert back to 8.0 via the Software Recovery Tool, everything works great. I reverted back this morning and I'm on 8.0 with LTE on AT&T. I've tried just about every fix combination I can think of in regards to the SIM (reset with/without SIM in, turn off and put SIM in, put SIM in and reboot, etc) but nothign works. Again, this is not a hardware problem since everything works on 8.0. Has anyone else seen this problem with their 1520?