jailbreak iPhone 4

How to jailbreak and unlock iPhone 4 iOS4
This tutorial is how to jailbreak and unlock iPhone 4 iOS4. Tools that are used to jailbreak using jailbreakme.com because it is very easy and fast.

Jailbreak with jailbreakme.com

Make sure the iPhone 4 terlock who can access the internet with wifi

Tap Safari to access the site jailbreakme.com

write http://jailbreakme.com and Go

to start the download and jailbreak, Slide to jailbreak

wait until the download is complete jailbreak tools completed dowload tools will perform the jailbreak, wait until the completion

when finished there will be notification that the Cydia jailbreak is complete and has been installed on the home screen

Congratulations we've menjailbreak iPhone 4 
now it's time to unlock the iPhone 4 SU

Terms and Preparation before unlock with ultrasn0w:

   * iPhone 4 SU already been jailbroken and upgraded to OS 3.1.3 or IOS 4 (already described above)
   * Make sure the batteries are full because the iPhone we will do it online via wi-fi
   * There should be internet wifi hotspots. We can create your own hotspot using a wi-fi router, use 
       the mac  as a wifi router, or we play to the mall, restorant which provides free internet hotspots.
   * Prepare a cellular card (SIM card) we have, make sure it is installed on our iPhone.
   * Prepare appetizers simtray iphone because it would be useful to open the SIM card

step 1
Enable our iPhone wifi, and connect to the internet wi-fi network

step 2
Tap Cydia application

step 3

     On the menu option under the select / tap 'manage'
     Select / tap the second option which 'sources'

step 4

     If you've entered the sources, press the blue button marked 'Edit' at the top right corner
     Then press / tap the blue button labeled 'Add' in the top left corner

step 5

     * Input / type in this address: http://repo666.untrasn0w.com
     * Note: on writing sn0w, '0 'is the number zero instead of O
     * Press "Add source"
     * Wait until it gets finished and it says "complette"
     * If this fails, try again until it says "complete" actually appear
     * After berhasli tap the blue button below that reads "Return to Cydia" Add 'in the top left corner

step 6
Press the "Done"

Sources on the screen choose the menu "repo666.ultrasn0w.com"

step 7
Tap the application "untrasn0w"

 step 8
Press the blue button marked "Install" at the top right corner

 step 9

     * Press / tap "Confirm"
     * Wait until finished and it says "complete"
     * Return to "Return to Cydia"

step 10

    * After that press the home key
    * Dead's our iPhone by pressing the power button about 3 seconds until a "slide to power off"
    * Turn again our iPhone.
    * Congratulations we have to unlock the iPhone 4 SU!

Tips if unsuccessful:

If the above steps have not been successful and we have not read the card provider, follow these steps:
- Select the mode / turn on the water plane
- Remove the sim card
- Put another sim card containing simtray
- Turn off more water plane
- Do it again Step 1 and Step 2 above

Still not working?
- Update Cydia, the importance that needs to be updated aja
- Then repeat the steps above