@simiken1234 Thanks for the detailed report and logs.
The images are correct. Your saved mach.var of 1.0.1 means M0054-1 hardware running the var00.1 (M0173) kernel, so the SDK 1.8.0 installer picked the right kernel and M0054(154)-1.zip is the right flat build. See VOXL 2 HW Versions.
The firehose reset timeout is expected and not a problem. See the note in Flash Flat Build.
A full factory flat build that still shows no USB device on a bare, cold-booted board, plus USB 3 resetting on two different hosts, points to a hardware problem on this board rather than SDK 1.8.0 or the -1 revision. Please do one more clean QDL flash of M0054(154)-1.zip over the USB 2 connection that worked. If it still does not come up as 05c6:901d, follow this section and request an RMA with the board serial (3f621d35), a link to this thread, and your support zip. Please hold off on further flash-system-image.sh or fastboot boot attempts in the meantime.
