I got an answer from tech support with the latest (v1.27............) MCU app.bin file, loaded it onto my freshly formatted in FAT microSD, popped it in my phone to confirm it worked, then powered down the Pulse X Infinity, loaded the SD card, powered on again, no change. Did it all from scratch again, no change. Reformatted the microSD card, no change.
The problem with my display glitch isn't the end of the world and the 2V0 firmware does seem more stable USB handshake wise than the 1V5 I was using before, BUT it's killing me that I "upgraded" to the X Infinity in 2.0 chassis so that I wouldn't have to send my unit in in case it needed an MCU upgrade, and now that's exactly how it'd have to go down...
I won't be sending mine in. I'll use it, maybe mod it and try to use up some of that empty space inside the nice looking chassis, then eventually if it breaks I'll move onto a new component. No more money going to LH Labs for me. Not even for shipping.