Hi, thanks I already checked that, the bios is the most current per the wiki SD-BS-CJ41G-M-101-E Date 01/07/2020. The device was there until I try to flash + reboot . I just had a different label that the last order of Odysseys I got. I havent had issue with Ubuntu 20.4 before. I have installed everything from the same install USB for OS and script for packages. Also, I have tried reinstalling Ubuntu with fresh install to see if that would reset things. No luck. Once /dev/tttyACM0 did not show up in the reinstalled Ubuntu.