Can't seem to mod S2

Hi guys,

I wouldn't post here unless I was completely out of answers and I really would like some help.

I have a Galaxy S2 gt-i9100 (international) tha tI am trying to mod with Cyanogenmod. But no matter what I try, I get Status 7 errors.

Both the boot and the phone info screen say this is a GTi9100.

The phone runs CWM 5.8.1.8. It is rooted (I ran Rashr and updated).

I have tried the following ROMS:

cm-10.1.3.1-i9100-signed
cm-10.1.3-i9100
cm-12.1-20150827-NIGHTLY-i9100
cm-12-20150102-UNOFFICIAL-i9100

No luck - I always get an aborted installation with a Status 7 error.

I'm out of ideas. Tutorials say you can fix Status 7 by updating CWM, but it is at the highest I can get.

thank you,