Anyway, I used KF First Aide to attempt to load 10.2.3 on it, and everything appeared to operate fine. However it reboots directly to fastboot screen, and I cannot find a way around this. I've done the power switch reset thing, have redone the KFFA load several times, and nothing helps. As you can see in the second picture, the Fastboot screen comes up without any cable attached to the device. The first photo shows the result of flashing with KFFA.