Changes

iQue is Nintendo 's Chinese subsidiary (previously a partnership between them and Wei Yen until 2013), so when they released their Nintendo DS in China under the name iQue DS along with a few localized games. There is one important difference, though. While the Chinese iQue DS their ROMs are perfectly normal DS ROMs, they also have region locking implemented, preventing had special flags set in them from running on any DS system to check if the hardware thatran the cartridge was iQue's not the Chinese iQue DS modelor Nintendo's as a sort of region lock. (HoweverNintendo's own hardware would fail this check, any 3DS from any region will run these Chinese throwing an "Only for iQue DS games, despite actual 3DS games being region-locked" error in white text on a black background. Go figure.) No other DS games - have this mechanism; not even for Korean releases - do this. This region lock is bypassed by the 3DS for these DS games, even though 3DS games have their own region lock. It's weird.

If you try Emulators differ in their behavior to emulate those ROMs with this region lock. No$GBA, it just crashes. DeSmuME will at least boot, yet DeSmuME will always show the message that shows on real (is accurate to non-iQue) DS hardware: a glowing message on a black background that says (in English) "Only for iQue DS" , and just loops endlessly on that same screenwill replicate the failure. In the event you're desperate to emulate those releases, you'll want to change  The only way the ROM will accept other hardware (and thus emulators) is with a hack, involving a simple byte change. Use a hex editor) - specifically to change the byte located at <code>0x1D must be changed </code> from value <code>80 </code> to <code>00</code>.