Just simply use SE PC Companion, or SE Update Service, and you will get 2.1 version.
If you want the last official update of X10 Mini Pro ROM then go and find the 2.1.1.C.0.0 version (Google will do the job quickly).
This one is not released for our region, so when you regularly flash your phone with SE PC Companion, or SE Update Service, you will get already familiar 2.1.1.A.0.6 version.
So I would suggest you using Flashtool + 2.1.1.C.0.0 version, if you want the last official version of stock ROM.
Anyway, almost all official versions are packed with Croatian, Bosnian, Serbian languages, so whatever version you choose, you will get what you want.