Step-by-Step Guide to Jailbreak 1st Gen iPhone and iPhone 3G running Firmware 2.1

 The step-by-step instructions to Jailbreak 1st generation iPhone and iPhone 3G are as mentioned below:

    * Download iPhone firmware 2.1 for iPhone 3g or download iPhone firmware 2.1 for 1st generation iPhone using this link.

    * Install iTunes 8.

    * Update iPhone with iTunes and make sure it is activated!

    * Uninstall iTunes 8.

    * Uninstall Apple Mobile Device Support (From Add/Remove Programs in Control Panel)

    * Install itunes v7.7.* (http://www.filehippo.com/download_itunes/) <-- all versions of itunes are there.

    * Download Quickpwn with the correct 2.1 bundle from this link.

    * Run quickpwn, select your iPhone1,2_2.1_5F136_Restore.ipsw or iPhone1,1_2.1_5F136_Restore.ipsw.

    * You can select Cydia and Installer and logos if you wish.

    * When it is finished the iPhone will reboot. Cydia and Installer will NOT be visible.

    * Download TotalCommander.

    * Download t-pot addon.

    * Install TotalCommander and in the left pane navigate to T-PoT.1.1.zip and click on it. It will install t-pot automatically.

    * Download the mobileinstallation patch.

    * Use Totalcommander to install patched mobileinstallation to /System/Library/PrivateFrameWorks/MobileInstallation.framework ... clickon the dropdown box [-\-] top left and select network neighbourhood then t-pot. Remeber to back up your original mobileinstallation first! Drag the file from the right pane to the left, not from windows explorer to TotalCOmmander.

    * Still in TotalCommander delete /private/var/mobile/Library/Caches/com.apple.mobile.installation.plist

    * Reboot the phone. This should jailbreak your iPhone.

    * Install “CacheDel” from cydia. Run this after each Cydia update or app install. Soon, Cydia, itself will be updated and this step will no longer be necessary.