firmware file problems

[tonygool1]

hi all

i have just downloaded 4.0 firmware so i can downgrade my iphone 3g. i used felixbruns to downloads.

the problem i have is the download is not a ipsw file. i think they are dsu files. how do i change them to ipsw as redsnow wants ipsw files for the search.

or can someone advise where i can get os 4.0 ipsw file.

i would love some advice as i have been at it for about 6hrs to try get my iphone jailbroken.

please help, cheers in advance. tony

 

[IGoSlo]

I usually download my FW files from ModMyi.com Have never had an issue with them...

 

[tonygool1]

hi igoslo

thanks for your help, i just downloaded firmware from modmyi. it looks the same file format as the site i mentioned earlier. maybe im doing something wrong. ok i have downloaded it opened the zip file... whats my next step.? do i have to unzip it into a certain directory or run something to give me a ipsw file. thanks tony

 

[IGoSlo]

Rename the file Extention from ".zip" to ".ipsw"

Download 4.0.1 and save to desktop. When you restore (hold "shift" restore) point iTunes to the 4.0.1 fiel on your desktop. IF your shsh are saved it should be fine. Then reJB.

 

[tonygool1]

excellent cheers igoslow

 

[tonygool1]

i keep getting error messages, when it verifies my firmware downgrade. i have seen a video to use quickpwn, but quickpwn keeps crashing. you mention every thing should be ok if my shsh is saved, im not sure what this is, so it could maybe the reason im getting errors. could you tell me what shsh is cheers tony