No Android build working!

[Vinay]

I recall having to do nothing to get it to work.  Oddly it was just about the only thing I could get to work at the time.  I don't use etcher though.  Maybe I was using an older version than what you've found, I have no idea.

Using Android on SD though, hosed my eMMC.  It's like Android just wanted to take over the whole system.

Oh, that doesn't sound pretty! I'd want it to run on the SD card and stay there. No point accessing anything else on my computer, it is just for running an app I need.