If you don’t have Windows, try starting from scratch by using the H9 Control app. On Mac, if you start the update process this way for Factor pedal with an older firmware, it will then prompt you to open up the Direct Updater which will bring up the available updates. This worked for me in the end after various failed attempts which left the PF in a state that wouldn’t power up properly.
Make sure you power up while holding down the middle footswitch each time you power up to attempt the update
