$FACT_RESET clears all user settings, including CAN node IDs. Solution: After the update, reconfigure your CAN ID using the command $CAN_ID=XXX (where XXX is 1-127). Save with $SAVE .
Before discussing the 2021 update, it is essential to understand the device. The IPG-8150PSS is not a standard consumer power brick; it is a precision switching power supply designed to pair with IPG Photonics' fiber laser sources. Ipg-8150pss Firmware Update 2021