mkrwan anyone used setFCU?

setFCU doesnt work for me. I can read FCU ok, and I can set FCU as well (proved by reading it back)

but the modem's framecounter seems to get stuck at the value I give it .... it never increments after I have used setFCU. at the network server side I then get repreat sequence errors as new data is sent with the same sequence number (the one I gave with setFCU) :o

any thought on this folks?