[asterisk-users] OT: Cisco 7961 SIP downgrade from 8.3.3 -> 8.0.4SRS2 failing

[Patrick]

Hi,

My apologies for the OT. My googling came up empty and hopefully there 
are some members in the community that could give me a hint how to solve 
this issue:

Cisco 7961 with SIP firmware 8.3.3. Needed to downgrade it to 8.0.4SRS2. 
The downgrade process started off good. The 7961 got it's IP address via 
DHCP, found it's SEP<mac>.cnf.xml file and started to "upgrade" the 
phone with the 8.0.4 firmware. All was well until it finally rebooted. 
Now it get's an IP from the DHCP server and says upgrading. Nothing 
else. It just seems to hang (monitored it for more than an hour).

Anyone have an idea how I can fix this?

Thanks and regards,
Patrick