PS3 scene taught us you don't even need to replace them.
Just deleting them is already enough seeing the game never access them unless you select that particular language.

This is true for pretty much every multi language game.

 

360, same story.
You can delete language files from discs if you got a JTAG/RGH.
That even dates back to the old Xbox, where that also was possible.

 

You can't pull that trick on units with Flashed DVD drives or units with Xkeys.
It'll break signatures of the game.

 

Is this also possible with officially installed borderlands 2 on a 3.60 Vita? I would guess not because you need to decrypt the files first?

 

Awesome thanks for trying it out free space is gold on a Vita! Thanks for the tip OP

 

thanks
we need more things like this