Ls991 imei repair!

Hi Z3X’ers
I was wondering if its possible to imei repair this?

I HAVE DONE THE GOOGLE LOCK REMOVAL by selecting H815 (G4). But i cannot repair the imei on my LS991 (sprint G4) as i cannot open "port check test". What is the command? I tried the one Z3X box tell me too but its not opening anything!

THanks guys and merry christmas!