Just installed the August 24th, RC2 for NETMF 4.2 QFE2.
Following the wiki for the Cereb firmware update
Trying to update firmware but mfdeploy has been sitting at checking signature for >10 minutes now.
Have you tried different USB ports and/or USB cables or maybe try a different cable from DP/SP module. Also try to add external power to the board/module. We are testing more here but have not yet encountered these issues.
I am having this problem as well. Justin, what was your solution? I have tried reloading the TinyBooter multiple times and then the TinyCLR with the “Checking Signature” Box not completing. I have tried multiple USB ports as said above as well.