Unfortunately, the GBA’s lifecycle was ending, and publishers were shifting focus to the Nintendo DS. The game was officially cancelled in 2004. For nearly two decades, no playable build existed—until August 2020, when an anonymous collector leaked a near-final prototype build online.
To get the game running perfectly, you’ll need a file. Community-developed patches, such as those by users like shantae advance gba rom fix download
Regarding the specific "ROM fix" you might be looking for, there are two key technical aspects commonly discussed in the community: the GBA’s lifecycle was ending
Legally dump your own physical cartridge using a device like the GB Operator or a homebrewed console. no playable build existed—until August 2020