hello ,i have a problem
1-st day i by it and conect it to the network, need it to update it....after that the ricever not working any more
befor update the ricever it workt
what i havbe to doo

Which rom version you have flashed?
Try to reflash the phone again and do the factory reset as below:
"Start the phone into recovery:
- Press Power and Volume up together for around 10 Seconds
- When the open android is shown press Power and Volume up together again
- Select Wipe data/factory reset with volume keys, confirm with power
- After factory reset select ""reboot system now"""

If still can not fix your problem, please let us know.

ok ,i will try