1) try a factory reset in recovery mode (will also delete your data/settings): - Press Power and Volume up together for around 10 Seconds - be sure that the little arrow point on recovery (select with volume up, enter with volume down) - Then the open android with red triangle is shown press Power ...

After my upgrade only only one sim gets signal.
My battery gives 75% but 4 hours remaining
And I do not have no signal 4 internet

Please help me... I did not make any backup cause the phone is new ...can I still downgrade or is there any solutions ?

I did try it like 100000 still get error code 10 while installing the vcom or cdc.

Whil the Os 7 comming in with a regular update on the phone ? cause then i will wait