I am running CM 4.2(3) and after the firmware upgrade of the 7921 to 1-3-3 I have problems.
It registers normally but after some hour the message "NOT IN SERVICE" appears. Then it resets and the initial steps happen again:
1. Opening 172.16.x.x (cm ip)
2. Configuring IP
3. Confiruring CM List (somethimes it freezes)
4. Opening 172.16.x.x (again... and it freezes)
Firmware problem? Wireless problem?
Thanks in advance
We run 4.13SR8a and have hundreds of 7921s and a handful of 7925s with no problems that you are describing.