Download iPhone 4.0 Custom Firmware (.iPSW) for iPhone 3G/3GS 4.0

By Sandip Dedhia on June 6, 2010
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iPhone 4.0 Custom Firmware .ipsw file

iPhone OS 4.0 has got lots of goodies for us also this time we have several positive singles from iPhone hacking community for iPhone 4.0 Jailbreak & Unlock. You can jailbreak iPhone 4.0 OS with Redsn0w 0.9.5 but there is no unlock tool available of now, brave iPhone users may try unofficial Blacksn0w to unlock iPhone 4.0 OS on iPhone 3GS only if you have iPhone 3GS with iPhone OS 4.0 and Baseband 05.11.07.

We know your first question will be how to preserve baseband while updating iPhone to OS 4.0 since Pwnagetool for iPhone OS 4.0 is not yet available. But there is one unofficial Pwnagetool 4.0 is available which lets you to update iPhone 3GS to OS 4.0 preserving baseband.

We have very less reports on success with PwnageTool 4.0, even if iPhone dev team comes up with official PwnageTool for OS 4.0 there are very slim chances that it will be available for windows users, since for long iPhone Dev team has stopped developing Pwnagetool for Windows OS.

Custom firmware is the only solution for this situation. Custom .iPSW is hacked version official firmware released by Apple which has Cydia installer and hacked baseband to let you to unlock iPhone 3GS/3G & use it with any carrier in world.

You can grab iPhone OS 4.0 custom firmware .ipsw file for iPhone 3GS using below links (Coming Soon..) which has preserved baseband 05.11.07 to let you to unlock iPhone 3GS.

We will update this post to include links to download iPhone 4.0 custom firmware .ipsw OS for iPhone 3G, iPod Touch 2G & 3G.

Please Note: We have not tested any of above custom firmware files, use it at your own risk. We will not be responsible for any damage which may occur to your iPhone & iPod Touch.

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Sandip Dedhia

Sandip Dedhia

Sandip Dedhia is the founder of Blogsdna.com, he loves to write on technology, gadgets & web services. At Blogsdna you can read his Windows tutorials, free and useful software related articles. He is on twitter too @sandipnd View author profile

  • themadhata

    ahhhh? mate where are the links for 4.0 gm custom ipsw for the 3gs?

  • justin

    dude where are the links! ppl realyl want this since many ppl dont hav macs and the modified pwnagetool is still mac only and i like many hav a 3gs n want to jailbreak (the unlock is already available)

  • asif

    where is the links?

  • DJACID

    http://www.megaupload.com/?d=WHEPYT91

    iphone 3gs custom firmware,
    this one is for 02 only as it need to be activated

  • tom

    3gs 4.0 came out one june 21. still anxiously waiting

  • Paul

    If this custom IPSW was created with pwnage tool 4.0 there is an ibooks error, you will need to use one created with the newly released pwnage tool 4.0.1

  • Florian

    hi all,
    I have a 3gs running on a jailbreaked 3.1.2 (7D11) with baseband 05.11.07 an a serial starting with MC….
    Can I use the above mentioned custom ipsw for unlockers to upgrade to ios 4.0? Will the phone still be jailbroken and can I still use an unofficial carrier?

  • asif

    does that firm ware work if u are alredy on the 4.0

  • inum

    I have a jailbroke iphone 3g 3.1.2 and would like to upgrade to os 4 please tell me the steps to take to get this done. thanks so much.

  • Ytfirewall790

    tk

  • Thepiousboy

    Hi all,

    I am seeking anyone’s help
    i have iphone 8gb 3g & i had updated to os4.1 unfortunately & now it is showing to connect to itunes & is stuck in recovery mode.
    Please help me in this regards

  • Ant_3omry

    hi thank men uare hala

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