[How-To] Jailbreak your iPhone 4 (4.0/4.0.1)

August 4th, 2010 admin

The iPhone Dev Team have finally released their iPhone 4 unlock. It supports baseband 1.59.00 (iPhone 4 on 4.0/4.0.1). The unlock also supports the iPhone 3G & 3GS running any version of iOS 3 or 4 (basebands 04.26.08, 05.11.07, 05.12.01 and 05.13.04). The unlock is ultrasn0w version 1.0-1. You basically jailbreak your iPhone 3G, 3GS, or 4, add repo666.ultrasn0w.com to your list of Cydia sources, install ultrasn0w, and use your new SIM. There still is no way of hacktivating an iPhone 4 (because the jailbreak uses MobileSafari), but that should come eventually, so for now, you need to use an official SIM to at least get the iPhone 4 kicked out of emergency mode.

Step-by-step instructions:

  1. Jailbreak your iPhone by going to http://jailbreakme.com on your device’s copy of MobileSafari.
  2. Once jailbroken, open up Cydia.
  3. Go to Manage>Sources>Edit>Add. Add http://repo666.ultrasn0w.com.
  4. Search for “ultrasn0w”.
  5. Install ultrasn0w.

After it’s installed, you can immediately enter your new microSIM card and begin using that network.

Follow me on Twitter: http://twitter.com/gumballtech

Posted in iPad/iPhone/iPod Touch, Jailbreak Tags: , , , , , , , , , , , ,
«
»
You can leave a response, or trackback from your own site.

  • Pingback: Tweets that mention [How-To] Jailbreak your iPhone 4 (4.0/4.0.1) | Gumball Tech -- Topsy.com

  • http://www.intellectsoft.co.uk/iphone_applications_development.html Iphone application development

    I'm still thinking if to jailbreak my iPhone or not. On the one hand I'll get lot's of apps on the other it may break the phone..So are the main bonuses from jailbreaking?
    Cheers,
    Mery from iphone development

  • http://gumballtech.com brian

    Come on… It's impossible to break your device with this software. Milions of people already jailbroke their iPhone 4 withno problems.

  • Billy

    im having some problems jailbreaking my phone it keeps coming up with errors when i get to step 3 what should i do????

  • http://gumballtech.com brian

    I can’t help you unless you tell me what error you’re getting…

  • http://twitter.com/beoleb nathan smith

    when i go to jailbreakme.com the page says “Not found (error to origin)” any solution?

  • http://gumballtech.com brian
  • http://twitter.com/beoleb nathan smith

    “Oops! File received was invalid” popped up when I tried to slide to jailbreak. Sorry I am having so many issues with this.

  • http://twitter.com/beoleb nathan smith

    The installer crashed last time I tried to install this also

  • http://twitter.com/beoleb nathan smith

    Finally got it! Thanks!

  • James Hobson

    I followed your instructions and I don’t think I messed anything up but
    clearly something went wrong, my phone is rebooting for 10 minutes now,
    it’s just frozen on the apple screen with a small circle on the center
    of the screen but nothing happens.