The PSP isn't the only one that can get firmware updates, you know.
Owners of the GBA Play-Yan Media Player will soon be able to upgrade the unit's movie playback capabilty. An update is in the works that will allow for higher-quality MP4 format movies to be displayed, as well as the addition to listen to them in high-quality stereo sound. Currently, the Play-Yan is only capable of playing back ASF format MPEG-4 video in mono sound.
A 500KB patch file will be made available on the Play-Yan website toward the end of next month, which can be downloaded to a computer and transferred to an SD card. Since the Play-Yan doesn't have any internal memory, the patch must be on the card with the MP4 format movie files every time the files are loaded.
The current version of Media Stage, the computer program that comes with and encodes movie files for the Play-Yan, does not encode files into the MP4 format. There are plans to release an updated version of the encoder so it fully supports the new video format as well.