So, following the A9LH guide Here: https://github.com/Plailect/Guide/wiki/Part-4-(Getting-the-OTP) I started the REDnand downgrade to 2.1(NTSC-U) and left the room for a few minutes. Came back, and the RXtools menu was loaded. I use CTR-boot manager to autoload RX tools. I tried loading REdnand from there and was greeted by a black screen, which I believe s normal. however, what I need to know is, did Plaisysupdater succeed in the downgrade, or not? does anyone know how best to check?