Using soft mod/bios mod on windows 7 Ultimate (OEM_SLP channel). slmgr.vbs says Remaining Windows rearm count: 3 When I start Windows loader it says licensed. (Green light) I believe originally modified Slic to 2.1 and installed a certificate. Not sure what I used. It's been many years since modification. How can I install Service Pack 1 without messing up my current installation? Where can I get the 64 bit Iso for Service Pack 1? Thanks in advance.