A while ago I updated to 12.0.0 on my stock OFW. My emunand has not worked since. After the Nintendo Switch logo I get a black screen and the emmummc doesn't boot. Stock OFW still works, sysmmc cfw still works, and things like Switchroot or Lakka work. I have started fresh with AMS many times, I am up to date with my firmware and AMS versions, and I do not have an emummc backup. I hope there is a solution to this.