Hi John,
If you are upgrading to the latest you don’t need to have ADB working. There is an update package for the WP7104 at developer.sierrawireless.com/Res … ution.aspx (as long as you are signed in). That allows you to upgrade both the module firmware and linux to the latest factory version.
To upgrade (if you have the SW drivers installed) set your boot switch to LOW/OFF on the dev kit, connect to your PC and run the installer program.
Andrew