Hello there, First of all, I don't have that problem. But since the downgrade people keep popping up in my tutorial complaining about rxtools not booting no matter which version. It gets stuck with red bottom and black top screen. I did not ever hear of that problem before the new downgrade methods came. I want to know what could be the reason. I suspect the downgrades still being buggy. Or is black/red a common issue and happened before hand? Never heard of it, never experienced it myself. Either it freezes with black or it shows some kind of error. Could it be that the downgrades are not completely failsafe and work for some while they don't work for others? Thanks.