Default [Q] [HELP !] Downgrading different region surface RT

My friend upgraded my surface to 8.1.....

So I decided to downgrade my Surface RT to 8.0.

And I found 8.0 Recovery file for Surface.

However, my Surface is KO-KR version, but can I use this EN_GB version ?

And, if it won't work, where can I download it ?

Plz help me. Cuz as I'm a programmer, I have to use SharpDevelop, PuTTY, Python RIGHT NOW...

Sry for my bad English..