Figured I'd start this thread to keep it all in one spot. I'm on my second SP3 with the same issue - the latest firmware update fails to install correctly, causing the N-Trig Touch Controller to go into a Code 10 state within Device manager. Nothing solves the problem - tried refreshing, resetting, installing the update manually via the inf files. The Touch Controller just goes into the yellow triangle Code 10 state...and there it stays. Seems a lot of us are experiencing the same problems.
I expect MS will have to issue a new version of the FW update to resolve the issue. Any updates on when that might happen?