From ModMyi - Wiki

This is an old, outdated guide. Here is the newer version.

original guide by concietedsoftware folk

• Download the iUnlock_Reloaded.zip from here, here or here. Save it to a directory.
• cd to where you just saved the download and unzip it.
• in another wiindow, ssh into your iPhone and run: mkdir /unlock
• back on your Mac, scp the three files to your iPhone: scp -p iUnlock_reloaded *bin root@youriphoneip:/unlock
• on your iPhone, run: cd /unlock
• on your iPhone, run: ./iUnlock_reloaded

If it worked, and says your iPhone is unlocked, you're done. If not, read on.

If it says that the flash went ok, but the unlock failed, do this:

• put a copy of the 1.0.2 firmware in a directory on your Mac. If you need to download it, get it from here.
• rename the extension on the firmware from ipsw to zip
• unzip it
• run: dd if=009-7698-4.dmg of=ramdisk.dmg bs=512 skip=4 conv=sync
• use finder to navigate to the directory where ramdisk.dmg is and double-click it to mount it.
• copy the following files to the directory you unziped iUnlock_Reloaded.zip in:
• /Volumes/ramdisk/usr/local/bin/bbupdater
• /Volumes/ramdisk/usr/local/standalone/firmware/ICE03.14.08_G.eep
• /Volumes/ramdisk/usr/local/standalone/firmware/ICE03.14.08_G.fls
• copy those three files to your iPhone: scp -p bbupdater ICE* root@youriphoneip:/unlock
• on your iPhone, run: cd /unlock
• on your iPhone, run:

     launchctl unload /System/Library/LaunchDaemons/com.apple.CommCenter.plist  
  

• on your iPhone, run:

   ./bbupdater -f *.fls -e *.eep  
  

• on your iPhone, run:

   launchctl load /System/Library/LaunchDaemons/com.apple.CommCenter.plist  
  

• on your iPhone, run:

   ./iUnlock_reloaded
  

  It should successfully flash and unlock this time.