Kevtris posted an update to the hi-def's firmware, only 30-40 consoles are out there right now so this mostly just applies to them:
Weeeelllll, here it is. I received the everdrive yesterday and loaded V12? firmware onto it (the version before the "fix" for the HDMI adapter). Thinking this was going to be a "worst case" test. It worked perfectly with the games I tested- I tested about 6 or 7 different mappers and all is well. Reset even worked properly. Before, the error messages wouldn't show up properly but they do now (i.e. no SD card).
FDS is working properly now, and so do MMC5 games (i.e. reset works there too, and no need to use a game genie). I sent it out to a couple people and they could apply it properly, though one person has problems.
He was using a powerpak, and his MMC3 file was different than mine- I think he has the savestate mappers. This caused the update to not work. It reported a data corrupt error and refused to flash the firmware. I gave him my mapper 4 file direct off the CF card on my powerpak and then he got it to work properly.
I don't know anything about the save state mapper, but I assume it cannot load 512K PRG ROMs, because it uses some of the RAM for the savestate part? I could be totally wrong but that's just my first guess.
It works on some everdrives, but some people had issues.
Anyways, here is the update:
http://blog.kevtris.org/blogfiles/HiDefNES%20Update%20V2.00.nesTo use it, load this ROM on a flash cart (or burn EPROMs? hehe), run it and then get into the Hi Def menu, select "save and update", then "update firmware", and follow the on screen prompts. It will check the update for integrity, and then flash it if it passes the check. Cycle power and it will use the new firmware.