I'd like to downgrade versions on my Carbon 7 but the screen locks up at the black "HDS Carbon" boot up screen since I installed the 18.3 update. It worked immediately after the update, but a few minutes later locked up. I've tried soft and hard resets, and get the tone that it's trying, but still stalls at the splash screen. At that point, no buttons work. I can't even power down.
Thanks in advance for any suggestions.