Right, I ordered new battery, replaced it but no change. Still only red light shows when plugged to PC or charger. 
When plugged into PC, device is not recognized at all. Any suggestions?
I dont know what to do already.I changed almost everything in phone except mainboard. 

Hi, I replaced the charging board, but the problem is still same. Just red light is on,and I can not switch the phone on. PC does not recognize the phone when i plug it in with USB cable.
Any suggestions?

Hi, how can I perform firmware downgrade to previous version.
Iam having some screen issues after last update and I would like to try if returning to previous version will fix it or not.

Hi, with latest Firmware update the camera problem seems to be fixed. Thanks! The other two - mobile data icon and programmable SOS button still not fixed... BUT! With latest update more serious problem appeared! Display having serious issues with some artefacts, noise and errors. I dont know if its...

Hi, I have couple of issues which could be fixed in ROM update 1 - mobile data icon in top menu is always ON (green), even if the mobile data are switched off 2 - PTT/SOS button - There is no option to configure it like in BV7000 - I dont want to use long press for SOS button, and there is no option...