Hey there.
About firmware upgrading, there are a few threads you should look into.
Mainly, this one → Updating APIM Firmware (Calibration Files)
Since it went a little bit out of control (massive questions, over 850 messages), a new one was created Updating Sync 3 APIM Firmware (Calibration Files) and it’s still open. That one should be used for posting questions and doubts.
I’m sure you will find all the information required and get proper support there.