yeah you guys were right.. it was just mario maker trying to update.
i'm still on 5.4.0 spoofing 5.5.1 and all is well... except i still can't get loadiine gx sd to work at all for me... or any loadiine, for that matter.
initial modified kernel exploit works fine, and browser restarts. however, when i attempt to run loadiine, i hang my system/gamepad. maybe i'm not doing it right (trying to directly run the app), as i read something about needing to launch it from HBL... sigh.. i can't seem to find definitive information, or a simple step by step, from scratch to running a ROM ripped from a retail disc, on system version 5.4.0.
its not like I'm new to this type of thing either.. I've modded every console I've owned since the SNES and Megadrive(genesis).. (if i remember correctly the NES didn't need modding, and pirated carts worked fine on it). and soft-modded everything since PS2 myself. ps1 was more of a non-solder hardware hack (the manual spin-up spin-down disc swap method)... but anyway, i'm more than familiar with console modding/hacking, especially gamecube, wii, DS, 3DS... so i don't think it's a matter of skill or competence. if anything, I must have overlooked some magical thread that explains it all..