X1800 won’t start

[Reese]

See also here to try and get it into “data receiving” mode to update/complete the firmware (again):

Try to Update X1850 basically bricked mixer now

This topic is about an X18x0 mixer. Those don’t have ports to update via USB-flashdrives, so the question is off-topic. As Wyley1 states, try to do this several times to get it into “data receiving” mode: Hold BACK + FX CUE + TAP > Power ON If you get this message, then start the updater again. Sometimes a re-seat of the cable triggers the next step. Also, you could try another USB port on your computer to force a successful connection. I had this recently with my X1800 as well. It took 3 …