We have 4.1(3)SR4d call manager.
A want to use signed version of the current firmware.
I have 2 7905 firmware with zup and sbin extensions,
1 firmware image for 7912 with sbin extension.
I have both the sbn and bin images for 7940 and 7960, but if I set the phone to use the sbn I can change it to use bin again - which should not be possible as I know.
So, how can I use signed images?