Any resolve to this, I have a B5c doing the same thing.
The master side of the link has this issue.
The the radios still link up. I can access the slave but can only pass about 2mbps of data. The slave keeps flagging radar hits even on non DFS channels.
As I cannot access the master I cannot make any changes to the link. I was able to reload the firmware, No Joy. I was able to reset the unlock and unlock it again, No Joy.
I have contacted @Chris and provided him the support files via email tonight.
This is one of our main links and we are in the middle of a tropical downpour for the next day or so!!