Hi Joe, Many thanks for the information.  You are correct, if you roll back software versions, firmware versions will not necessarily automatically be rolled back.  If you would like to roll back to ZerOS 7.9.3 with the older firmware, you will have to update the software from a USB stick formatted as a bootable drive. Instructions on how to do this can be found in the ZerOS 7.9.3 release notes, available with the software here... https://zero88.com/forum/files/file/1-zeros-7