i think for the langpack you have to use a specific kind of LP.
my friend @motolovers.web.id has succesfully porting the patch for CG1, DRM, and also LP to get working multifont on L7.
i'll ask for him to upload it.
No gayoe, it's not necessary... I've ported it using an 0003 LP, not even the languages must be the original... you can use any language backup and change de offset 000002 to the language ID you need (Spanish 0A, British 03, etc...) and it's gonna work! I've done it... it's better this way because some language matrix don't accept necessary letters (á, é, í, ó, ú, ü, Á, É, Í, Ó, Ú, Ü, etc.. Spanish example).
The languages IDs still being the same... Vietnamese, French, German and Bahasa... all other languages will show normal font...