We are happy to announce that a Chinese hacker known as loktar_Sun has finally managed to give us all the iPhone 4 baseband 4.11.08 unlock and we are also happy to announce that the unlock is free of charge.

So, if you are interested in having the iPhone 4 baseband  4.11.08 unlock, then you can read the tutorial below.

Unlock 4.11.08

Follow these steps and you will be able to get the iPhone 4 baseband 4.11.08 unlock

Step 1. The first thing you need to do is go to Cydia and install SAM. All you need to do is go to ‘Cydia’ then ‘Manage’ and then ‘Sources’ and at the top right corner press the edit option and enter:


Step 2. After you have installed SAM, you will be able to see it on your Springboard. Press SAM to launch it. However, you need to make sure that you have the SIM card which you want to use in your iPhone.

Unlock 4.11.08 Baseband
SAM – 4.11.08 unlock

Step 3. After you have entered SAM, navigate to utilities and then select ‘De-Activate iPhone’. The ActivationState under ‘More Infromation’ will now be inactivated.

Deactivate Unlock
Unlock 4.11.08 baseband

Step 4. Once, SAM has been enabled, go to ‘By Country and Carrier’ present in ‘Method’ and then select your carrier. You might need to select the ‘SIM ID’ for carriers operating with more than one Carrier ID. This is easy for you to figure out when you notice that iTunes will not activate if the wrong IMSI has been selected.

Unlock iPhone 4 baseband 4.11.08
Step 4 Unlock iPhone 4 baseband 4.11.08

Step 5. Navigate your way to ‘More Information’ and write down or copy the IMSI in the ‘SAM Details’ and then tap the option, ‘Spoof Real SIM to SAM’.

Step 6. Now, go back to the main screen of SAM and then change the ‘Method’ to manual. Now, enter or paste the IMSI string which was saved during step 5th.

Step 7. Using iTunes connect your iPhone to the computer in order to reactivate your device. Simply double tap the ‘Phone Number’ present at the main screen of the device in order to make sure the ICCID matches with the one present on your SIM card. If the match isn’t exact, you’ll need to again start from step 1.

Step 8. Now, close iTunes and then unplug the iPhone 4 and disable SAM.

Step 9. Again connect the iPhone 4 to iTunes and you will see a message telling you that it can’t be activated. Close it and open it again.

Step 10. The signal bars lets you know that the iPhone 4 baseband 4.11.08 has been unlocked.

Some of you might experience a problem at step 7 as you might be shown a message: SIM card not compatible. No need to worry, as there is a guide for this as well.

By following these steps, you will be able to successfully get the iPhone 4 baseband 4.11.08 unlock.

  • Sahil Sharma

    yes it works….!!
    I unlocked my iPhone 4 iOS 5.0.1 (04.11.08)

  • Jay ‘Dotz’ Patel

    i cant seem to get any reception . my iphone says O2-UK with 3g at the top but no signal bars help asap

  • Silverboarder3000

    I have an iPhone 4 model MC603B.
    Ive googled it and it should be UK O2 carrier.
    But iTunes keeps saying that the SIM isnt the official one. anyone got some tips?

  • Babobozijo

    what’s the sam card, is it a actuall card or is it just the source on cydia, please let me kno asap. tnx

  • Adytzu_xxl

    whoo did this completly???is working 100%??

  • As7213

    привет ! он тебе ответил или ты обновился через тунца

  • Janiki

    i also waiting for unlock for 4.11.08 can u say me solution

  • Bona

    Saffen, my guessing that you are an APPLE employee who is trying to trick people to update to latest iOS and preventing to unlock….nice try 😉

  • Emendoza3

    It´s not working anymore…I tried it several times but no success…Help

  • rasputin

    mine too does not work from me

  • Fashid_md_68

    does the R-sim 4 works?

  • Chefcaudillo

    does anyone know if threre is a new method because this one is not working anymore?

  • Toli_21

    not work because apple stop this method

  • Saffn

    No i am just happy that i unlocked my Iphone… This is a method for unlocking.


    yes this will unlock all BB… 04.11.08 and anyothers, as it needs to update the iphone to the latest BB

  • Asddsa

    Is there another way for unlocking Iphone 4 4.11.08 ???

  • yahoo

    Any updated method to unlock 04.11.08 ?? 🙁

  • Viral1986

    my iphone 4g not cydia and bb 4.11.08 and unlock

  • Ismail Abedin

    What is the latest BB?

  • Ismail Abedin

    Why are you people confusing us? If it doesn’t work then don’t put it here. It is very frustrating as well.

  • Ismail Abedin

    You have problem in step 18. Once the phone is activated using the at&t SIM it does not give “attempt activation” option. This looks inconsistant to me. Please review.

  • Mahmoud_jaffal

    my iphone wont turn on again !

  • Sharingbr

    SAFFN get out!!..

  • naina

    hi were u really able to unlock ur iphone by this method mentioned above. I dont wana trsut on written things if u were succeeded pls lemme know afterwards only i would do this. Hope this will unlock n doesnt get my phone in more trouble…

  • Anna

    Shallow blue unlocked my unlophone and it worked

  • Jen

    how did you d it????

  • Stefan

    Does this work in for all Macedonian operators ? I’ve tested it i know that it works for T-Mobile Macedonia but i want to use my iphone with “One” Sim card

  • Sandra

    can someone please help me? after i’ve done everything up till step 7, my itunes still gives the same error message saying “The SIM card inserted in this iPhone does not appear to be supported.” please help. did i miss a step?