>>46361883sorry for the sorta misleading post from earlier, it seems as though apparently the gPSP emulator I mentioned earlier tends to crash randomly a lot.
i quickly tested every remaining option and i may have fucked up the hex edit trick, since the file ended bigger by one byte to the original, just enough to go past the 32MB rom hardcap supported by real hardware. i gave it a try either way on open_agb and it was then that i noticed, because it refused to load it. i also made an inject just in case and it crashed the 3ds on load.
after all this i realized NSUI had an option for picking save types, so I went and got a clean untouched just-patched gaia rom and just injected the game again and I went for the 1M + RTC option instead from the default which apparently was just 1M to see if that threw any issues... and, after quickly rushing through the intro, saving and soft resetting, it seemed to work just fine. I also loaded it through open_agb just to make sure, and it worked fine there also. you might have fucked up your inject on your end, anon