the main problem is the following.
i want to create a update which doesn't change files, just the version number have to change. i can edit the param.sfo from the update file without problems. but i need an eboot.bin which also have this version number. so i wanted to use the original eboot.bin and change the version number that it fits to the update.pkg.
i will try this evening if i can edit the versionnumber over an hex editor, but i am not very optimistic
if someone could help me with it, it would be cool. my opinion is that only the eboot.bin blocks me atm from creating fake updates for games.