Ok, will check with him.

Here’s a video of me holding down “2” and turning on the unit – you can see it never says to release the button, and it automatically goes to the “test” screen:

https://alabama.box.com/s/ej910a8ohs7g3jdq0zsbe47qb1awpy1k

I have also noticed that there are occassional “checksum” errors on boot, so these two things may be connected.

Thanks.