diff options
Diffstat (limited to 'src/libui_sdl/main.cpp')
| -rw-r--r-- | src/libui_sdl/main.cpp | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/src/libui_sdl/main.cpp b/src/libui_sdl/main.cpp index 13778ec..d6aa460 100644 --- a/src/libui_sdl/main.cpp +++ b/src/libui_sdl/main.cpp @@ -2664,6 +2664,45 @@ int main(int argc, char** argv) SDL_Quit(); return 0; } + if (!Platform::LocalFileExists("firmware.bin.bak")) + { + // verify the firmware + // + // there are dumps of an old hacked firmware floating around on the internet + // and those are problematic + // the hack predates WFC, and, due to this, any game that alters the WFC + // access point data will brick that firmware due to it having critical + // data in the same area. it has the same problem on hardware. + // + // but this should help stop users from reporting that issue over and over + // again, when the issue is not from melonDS but from their firmware dump. + // + // I don't know about all the firmware hacks in existence, but the one I + // looked at has 0x180 bytes from the header repeated at 0x3FC80, but + // bytes 0x0C-0x14 are different. + + FILE* f = Platform::OpenLocalFile("firmware.bin", "rb"); + u8 chk1[0x180], chk2[0x180]; + + fseek(f, 0, SEEK_SET); + fread(chk1, 1, 0x180, f); + fseek(f, -0x380, SEEK_END); + fread(chk2, 1, 0x180, f); + + memset(&chk1[0x0C], 0, 8); + memset(&chk2[0x0C], 0, 8); + + fclose(f); + + if (!memcmp(chk1, chk2, 0x180)) + { + uiMsgBoxError(NULL, + "Problematic firmware dump", + "You are using an old hacked firmware dump.\n" + "Firmware boot will stop working if you run any game that alters WFC settings.\n\n" + "Note that the issue is not from melonDS, it would also happen on an actual DS."); + } + } { FILE* f = Platform::OpenLocalFile("romlist.bin", "rb"); if (f) |