yeah I also tried taking a look at the loader but I could not determine the type of file it was. It makes sense to be a compressed file though. Perhaps its some form of the Huffman compression algorithm.
Maybe someone will release a modchip to make the Chinese G6L compatible with English bios
I don't think there is anything at the hardware level preventing the software to be in english, proof of this is that v4.0beta has both english and chinese languages, obviously the problem here is in the source code.
I know some to some people, like you iMad, this must seem pretty funny; but IMHO the possibilites that could open, by having external programmers hacking and reverse engineering the loader are far greater than the mere "english in chinese G6s" dilema. They could be much more ambitious and try to completely overhaul the loader. Say for example that more than 2 langs could be supported (spanish, french, japanese etc... ), complete skinning of every graphical aspect in the GUI, the embedding of the player features into the main program (everthing loads from one place; text, music, vids and games), a transparent transition between NDS and GBA loaders so that the differences between the two are minimal and on along this same line the improvement of loading GBA roms from the NDS loader.