A206 Carrier board not going into recovery mode

I have a A206 carrier board in my reComputer J1010. I am trying to put the unit in recovery mode to reinstall everything using the Nvidia SDK manager. I have placed a jumper on pins 3 & 4, but the unit does not show up on my linux host (connected with the micro-USB) running the lsusb command. Any thoughts on why this wouldn’t be going to recovery mode?