Jailbreak Pre-Requisites on Iphone 4

Few Precautions & Things to Remember before doing Jailbreak :

  1. Backup all your data including iTunes , Contacts , Videos , Music Apps before Jailbreaking
  2. Save your SHSH Blobs
  3. You must have the latest stable version of iOS4 public release installed in your Iphone 4. (iOS4.0 ,4.0.1). Not beta version. All Iphone 4 Download Links
  4. You will need an Original supported SIM card to activate with iTunes incase its a locked device and you dont wish to use your official carrier . Others can skip this part . ** You can use Snowbreeze or Pwnage Tool to activate your phone while jailbreaking .
  5. Have proper internet connection (wi-fi) before connecting and downloading the jailbreak on your iphone , so there are no hiccups during the installation. Get your iphone fully charged.

JailbreakMe works on the following devices : ** For latest version refer How to Jailbreak iPhone 4 Article

iPod 1G on 3.1.2, iPod 1G on 3.1.3, iPod 2G on 3.1.2, iPod 2G on 3.1.3, iPod 2G on 4.0, iPod 3G on 3.1.2, iPod 3G on 3.1.3, iPod 3G on 4.0, iPad on 3.2, iPad on 3.2.1, iPhone 3G on 3.1.2, iPhone 3G on 3.1.3, iPhone 3G on 4.0, iPhone 3G on 4.0.1, iPhone 3G[S] on 3.1.2, iPhone 3G[S] on 3.1.3, iPhone 3G[S] on 4.0, iPhone 3G[S] on 4.0.1, iPhone 4 on 4.0, iPhone 4 on 4.0.1

Note : If you are facing trouble even after having followed this steps , please post your problem in the Iphone 4 Forum. I will be happy to assist you.