Monster Hunter Firmware

anyone know what firmware the european monster hunter freedom umd requires, i am guessing 2.6 or 2.7

i am on 1.50 at the moment but may consider updating to 2.6 so i can keep hb like m64 and such but start buying a few games again. if anyone has it and has got it working through a UMD loader such as MPH, runUMD, or Genesis please let me know

there is no chance at all of me updating to 2.7
ever

I heard it's 2.7

Anyway, somebody knows the update required for Metal Gear AC!D 2 (america)??