Jailbreak iPhone 2G 3.1.2 Using redsn0w-win_0.9.3 100% working

first download red snow o.9.3.working link is here
red snow 0.9.3

 then download ipsw file
http://rapidshare.com/#!download|93tg|344601784|redsn0w-win_0.9.3.zip|12463