Service and Maintenance > Backup and Reset > Downgrading the Telephone

Downgrading the Telephone
It is possible to reset the telephone to a previous firmware version. In some cases, this means that the Android version is also resetted. The reset to the previous Android version actually goes together with the change of the firmware version but nevertheless, differs from the downgrading of only the firmware version. Both variants are described in the following.
After the upload of the firmware file, first the COMfortel logo and then the Android logo appears on the Display.
Important: If you want to change the firmware version without the changing of the Android version, wait until the setup assistant starts und then configure the telephone. Otherwise, if you also want to change the Android version, proceed as follows.
The LEDs of the second function key from above and from below start to flash.
After a short time, the Setup assistant opens.

COMfortel 1400 IP/2600 IP/3600 IP - Firmware V2.8 - Advanced Information V08 12/2020