COMfortel M-720 - Advanced Information - V01 08/2021
43
Procedure in the event of an error
If the update procedure fails or the telephone no longer functions properly after the update,
repeat the update procedure:
¤
End the
QuickSync
program on the PC Remove the USB data cable from the telephone
Remove the battery Re-insert the battery
¤
Carry out the firmware update again as described above
If the update procedure fails more than once or it is no longer
possible to connect to the PC, carry out the
Emergency Update
:
¤
End the
QuickSync
program on the PC Remove the USB data
cable from the telephone Remove the battery
¤
Press and hold keys
and
at the same time with the
forefinger and middle finger Replace the battery
¤
Release keys
and
. . . the Message key
and the
Talk key
will flash alternately
¤
Carry out the firmware update as described above
Always save pictures and sounds uploaded onto the handset on the PC, as they are
deleted during an
Emergency Update
.