Root Galaxy SII SHV-E120L running 4.1.2

[Dumo13]

Hello, I am trying to root a Galaxy SII SHV-E120L that is running android 4.1.2. Note this is not the GT-1900, but the Korean version running an updated version of android, not the standard 2.3.6 (I think it was) that came preloaded.

I have scoured the internet for hours and have found guides for the SHV-E120L running 2.3.6 but none have worked on my phone.
Thanks.