WinyTips: Try 7zip if you're unable to extract a DMG with this method.
Yahya Ghanoum: Ty! :D
Mouad Azeroual: does this work on full version
Nathan Davis: This was really helpful
scosworth: Jeremy, I downloaded: iPhone3,3_7.0.4_11B554a_Restore.zip
I opened it with WinRAR and got: 058-1057-002.dmg
I opened the dmg with PowerISO and got the following message:
"The file format is invalid or unsupported" instead of a .ipsw file
Kevin Ludlow: worked like a champ.
MrSharma a: if you change the name you can put it in a folder, show the file extension,
and change it back to .dmg. You dont have to redownload (:
Melvin Mills Jr: Could you please tell me the solution to this problem. I am having the same
issue not seeing "open with"
danfk192: MACOSX from mxs! haha
MrBryguy55: This helped me get it! Thanks so much!