Prime 4 failing to complete update to 1.6.2 from 1.4.1. Now doesn't work - help!

[SlayForMoney]

From other user experiences here, seemsthe solution is to downgrade the firmware to an older version and then try again to update to 1.6.2.

Prime Go 1.6 Firmware Update Failed - Device Now Unresponsive

DJ Thumper, Ethan Allen here started the 3rd listing you referenced. After update to 1.6.0 Prime4 ENGINE will hang on ENGINE OS screen and not boot completely So, I have a Prime 4 and how I was able to get my Prime 4 in to update mode is: after trying 3 - 4 times to push power button - starts Prime 4 and gets stuck on Engine OS screen. I would HOLD power button down until the machine turned off. Wait 1 minute and then power on again. Finally, it would start properly. I then would attach my comp…