Allthough an old post, here is the correct answer:
RiceHigh's Pentax Blog: Unleash the Local Language Menu of a Locked K-01 Version
how this is done with the K3, you can read
HERE
For the first file which must be named: 0077560.523 some hex editing is needed.
The 2.nd file is DEVELOP.MOD
1. Place both files for the K-01 on the root of your formatted storage card
2. Insert this card in the camera but leave the door open!
3. Switch the camera ON
4. You are now in the debug menu and can do a lot... but be careful, you also can do damage.
So find out what you need and study all well!