Unable to upgrade firmware

[bluetel]

(02-14-2018 03:22 PM)complex1 Wrote:  

(02-14-2018 01:25 PM)bluetel Wrote:  Hello

we encoured problem. It's unable to upgrade firmware. Phone reboot and it's the same firmware.
35.80.9.4

we want to install the last

Tks

Hi,

A possible cause:
Your phone is locked to the VoIP provider and they decide the firmware release.

E.g. you upgrade the firmware and after the reboot, the phone check for new firmware and the provider downgrade the firmware.

Please check if the phone is locked to the provider.

Hope this will help.

Hello

tks for reply.

I do hard reset, and next upgrade ...
where i can see that you said remotly ?