I've got a couple 7935 conference phones that mysteriously "de-register" from the publisher (running CM 6.1), even though the other phones around them work fine.
Their software load is 3.1(1), which was meant for CM 4 and earlier, so I want to upgrade to 3.2(19).
I found Cisco's instructions on upgrading the firmware. My question is - what is my backout plan? Can I down-rev these phones by removing the new load and putting in an older one, or am I SOL?