I flashed MightMike as well
http://www.lilrico.com/Mighty/ROMs/M...16_032509R.rar
I used this link/download to get the ROM
Extract using winrar into a folder, and you'll see a RUU executable file, just run that and a window will pop up with instructions. MightyMike made things really easy, so don't worry about what the other folk have mentioned about moving RUU_Signed.nbh, etc. Just run the RUU and follow the instructions.