Unlock iOS 5.1.1 Baseband 4.12.01 / 4.11.08 — SAM and Redsnow [Video]

Have you been one of those users who want to update their device to iOS 5.1.1 firmware but afraid that you'll lose your SAM unlock?

Today we have good news for all SAM unlockers, don't worry as we have updated redsnow tool that allows you to safely restore your SAM unlock activation tickets to unlock your iPhone with any baseband on the latest iOS 5.1.1 firmware.

Yesterday the Dev Team mentioned inside the release notes that "now you can include your backed-up SAM unlock tickets in your initial ramdisk jailbreak of iPhone 4 or earlier, or on the other hand, you are able to upload your SAM unlock tickets to any device after its already been jailbroken."

The most popular jailbreaking software — Redsnow continues to be a most important tool. After latest update Redsn0w 0.9.12b1 can now jailbreak all devices on iOS 5.1.1, however, the a very important factor most of you'll be thinking about will be the ability to restore your SAM unlock tickets.

Sam Unlock iPhone 4
Unlock iPhone 4 / iPhone 4S / iPhone 3GS on All basebands With SAM

Last week, we posted a manual solution to restore your SAM Unlock activation tickets, but this more recent technique is preferable because of its simplicity.

How to Unlock your iPhone on any Baseband Using Redsnow

The following tutorial will work on all iOS 5.1.1 devices with any baseband including 4.11.08 and 4.12.01 and for all users who had unlocked their iPhone through the SAM unlock tool that was opened just for a few days before Apple fixed it.

Note: Your device need to be jailbroken on the iOS 5.1.1 firmware, since this can transfer the SAM unlock files. You had been also necessary to backup your SAM unlock ticket for future unlock.

Step 1: Download Redsn0w 0.9.12b1 click here.

Step 2: Now connect your iPhone to your computer and start Redsnow.

Unlock iOS 5.1.1 with Redsn0w SAM tool
Redsn0w Unlock All basebands With SAM

Step 3: Now Click Extras -> Even more -> Tickets and choose your Lockdown.zip file that is created when you backed-up your SAM unlock activation ticket. In the event you backed-up your tickets manually you can choose the .plist file.

Lockdown select to Unlock iOS 5.1.1 with Redsn0w
Choose Lockdown.zip or .plist file

Step 4: You need to get a confirmation message from RedSn0w stating that your Tickets are uploaded.

Step 5: Now reboot your iPhone, and test your unofficial Sim card.

Now you've successfully unlocked your device using Redsn0w.

Feel free to ask any questions in the comment section below.

Factory Unlock iOS 5.1.1 Now!

Unlock iOS 5.1.1 Baseband 4.12.01

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How to fix "can not connect to YouTube" issue?


Does it unlocks the iphone 4 with baseband 04.11.08 ? Before some weeks I unlocked the iphone with SAM but now doesnt work and unfortunately I didnt save ticket of SAM. PLEASE INFORM ME SHOULD I UPDATE TO IOS 5.1.1.


This sounds like a lot of unnecessary work being done. Earlier in one of the tutorials it states that you need to restore. Well i didnt want to do that cause i would loose my apps and etc, backing up just isnt enough. So this is what i did to keep those my data w/out restoring
*(My Phone---> ios 5.0.1 Baseband 4.11.08)

Updating Method
Step 1. Backup up tickets using cookie, to confirm that its backuped up you shoudl have an
option that says restore activation, dont click it yet but confirm its there.
(You can find this package in Cydia) (This uses iCloud so make sure your logged in)
Step 2. Take out unofficial sim

Step 3. Download the firmware you want to update to
( I recommend using this website http://www.felixbruns.de/iPod/firmware/ )
Step 4. In itunes hold-shift and select the version you want to update to
(I wanted to update to 5.1.1 so i chose that) *No need for tiny umbrella, DFU, etc
Step 5. When phone is rebooted insert your unofficial sim
a. If your phone has searching for awhile proceed to step 6 but skip step 7.
b. If your phone has no service or invalid sim, etc proceed to step 6.
Step 6. Jailbreak your phone using absinthe
Step 7. Install Cookie and hit restore activation.
*( Skip tis step if you were in option "a" in step 5 and move on into 8)
Step 8. Toggle airplane mode off, wait about 30 seconds and turn it back on. After a while
you should start getting signal bars and your Carrier name.
Step 9. Done!
* ( My Phone now-----> ios 5.1.1 Baseband 4.12.01)


I dont think you should update. Update means to replace old files with new ones and if the lockdownfolders is one of the files needed to update which contains your unlock activation is update then you will most likely loose your unlock.


I didn't do the SAM method way back, but I have a major question.
Is it possible to share the lockdown file between phones? Like would you be able to share that file with me and I will add that into my iphone, and if there are some info I need to edit like IMSI. Will it work?


Is the Lockdown file modifiable where I can make it compatible to my iPhone 4?

Chakravarthy CRS

hi i am stuck with 4.11.08 and 5.0.1 could not unlock with SAM earlier. Is there a solution yet for the users like me.


The ticket could be use on other iphone for unlock it?


Is this working?


No I meant, I unlocked with SAM but now doesn't work SAM unlock ?
iPhone 4 bb 4.11.08 ios 5.0.1
How to unlock now ?


Yes it works 5.1.1 bb 04.12.01


hi there
i have an iphone 4 bb 4.11.08 and i never used SAM so im wondering if can unlock my Iphone
thank you very much


can you unlock the baseband 4.11.8 and 4.12.01 ?? ore is this just for those who saved their unlock ticket through sam ??


Does Sam ticket work on iPhone 4gs iOS 5.1.1
Please I want know befor I update my iPhone


Hi, I have only two questions.
Can i unlock my iPhone 4 bb 04.11.08, 5.0.1 if i don't have before use SAM unlock?

And other question, if i have SAM unlock but i want use another Sim card but on the same carrier this method does work????

Thank you and please repeat me.


do we need the original sim to activate the phone.........I dont hav the original sim....what to do..


Hi man

I have Iphone 4 with iOS 5.1,BB 04.12.01 and AT&T carrier. Can i unlock it with the procedure u mentioned above?
I have not used SAM unlock before...
Pls do reply...........


I would like to share with you guys something so read this carefully, When SAM unlock method came out I have unlocked my iPhone with two SIM cards of Mobile Providers that are available here in my country and I have saved activation records for both of those SIM cards, so one day I had an Idea I have putted in my Lockdown folder both of Activation records and wow what happened, I can use both sim cards like it was full unlocked iphone , only by replacing SIM cards and without need of any reboot, Signal Bars come automatically.

So I just wanted to share this info for you that have saved more than one activation ticked and you think that whenever you want to activate another SIM card you need to delete previous Activation Tickets and than you have to reboot iphone and so on....so in fact you don't need that procedure only copy and paste activation records that you have saved previously - paste them in Activation Records that you can find in LOCKDOWN folder and that's it !!!!


DO I NEED SAM?! I have an Iphone 4 running iOS 5.1.1 and baseband of 4.12.01. I just want to get this phone working for T-Mobile. I put mad cash into this. I want this phone to work! Get back to me! Thank you!


if i don't have SAM ticket can i download it from another person and use it for unlock my iPhone ?


Unfortunately No !


I'm on 04.11.08 any unlock for that ?


My phone has ios 5.0.1 and 04.11.08 with activated sam ticket. Will my ticket work when i update the phone to ios 5.1.1 and 04.12.01 ?

Naveen Giftson

i upated to 5.1.1 and did the procedure using my saved sam ticket....and i rebooted but the signal didn't appear..does it take long time to show the signal?


Yes it will work, I had the same, and updated to 5.1.1 with firmware 04.12.01 and it works perfectly !

Natan Gouveia

can I still save my activation ticket?
or is it too late now?
I have the SAM unlock on my phone


do you have iphone 4 , 5.1.1 , bb 4.12.01 unlocked?? if so how? . help plz


i have an att iphone4 ios5.1 bb 04.12.01 its been jail broken but i dont think its been unlocked. i tried installing sam on cydia but it still didnt recognize my sim. Now cydia wont even launch.. should i upgrade my ios and try to follow this guide to unlock? can someone please let me know what i should do so I can use my tmobile sim? thankssss

Naveen Giftson

should i need to upload activation ticket using redsnow 1st and then carry out this procedure?


jailbreak the iphone


Guys, here's a situation: when I unlocked my phone with SAM, it had the previous iOS and 4.11.08 BB. Then I saved tickets.

Now I updated my phone to latest iOS (5.1.1) without preserving the Baseband (so it updated too).

Question: should the restoring tickets thing work now? (I tried many times, and it doesn't. Maybe there is smth wrong I do)


please ignore. already answered by someone else. (btw, still doesn't work)


I have backed up my ticket but I changed my sim (same carrier and number) will I be able to unlock?

Jose Roberto Duran Duarte

factory unlock baby...

Mayank Kapoor

no way


what if we never unlocked it with SAM, can it still work?

Steiky R. Pantaleon

every time I do my phone I get the setup screen as if you were recently restored. I have iPhone 4 ios 5.1.1 baseband 04.12.01 what i can do??

Steiky R. Pantaleon

and ask me for activation :/

Exoreck Hospeck

they did it once more !!

Exoreck Hospeck

thank you ''UNLOCKBOOT.COM''
you are my favorite webunlock site =D




Did u have. Before unlocked w| Sam unlock?
Before u update did u save your activation ?


Anyway you still need an official Sim ( AT&T)


wow i got success in restoring my iphone 4 ios 5.0.1 with baseband 04.11.08 to 5.1.1 preserving baseband. Last time when there was SAM unlock i unlocked my iphone in ios 5.0.1 wit bb 04.11.08..I just restored to 5.1.1 and inserted official sim & unlocked iphone then i keep unofficial sim. and surprizing thing is that my unofficial sim worked......its so surprizing... I didnt restore my SAM ticket to unlock...... After restoring my iphone 4 the unofficial sim automatically worked...Im happy....


Can i use the sam ticket for unlock other iphone 4????


Where did you guys got the lockdown folder?


Did you mean that you unlock your phone using SAM again?


Use latest Redsnow 0. 9.12.b2 and during jailbreak when your going to tick hacktivate install cydia theres an option restore activation ticket do that and it will be jailbroken plus activated.
!!!!ONLY FOR THOSE WHO BACKED UP THEIR ACTIVATION TICKET AND WITH THE SAME SIM AND SAME IPHONE ONLY!!!! HARDWARE IDS CANNOT BE BYPASSED!!! Also not that the backed up Lockdown folder must be in the format lockdown.zip and of primary folder ie /Lockdown/*.* (and not /var/root/....../lockdown).
Till now still no unlocking method for baseband 4.11 , 4.12 if not yet done by SAM.


with saved tickets preserving baseband.


ive been using a the gevey turbo sim with the 4.2.1 firmware on my iphone 4 i just decided today to upgrade my phone firmware to 5.1.1 not knowing of all this progress thats been goin on with unlocking and jailbreaking. i jailbroke my phone with absinthe and just realized that theres no unlock. the turbo sim doesnt work and i tried using sam and that doesnt work so whats my next option.


Hi Paulo!!! dont u have de push notification problem, when u hacktivate ur iPhone???


I have the same problem. I need help too. Pls help


i didn't save unlock ticket ...so i can't restore it...i have a 5.1.1 bb 4.12.01
what i have to do?


I did everything...it didn't work either -.-


try sn0wbreeze-v2.9.5 will activate and preserve baseband to unlockt with Gevay Pro

Seem Mujawar

I can factory unlock any iPhone with any bb interested peoples contact me on ahtesh4i@gmail,com or seemr4u@gmail.com


i have an iphone 4 ios 5.1.1 baseband 04.12.01 and i don't have a
ticket how ii unlock my iphone please help my ... i am very confuse . any way any risk only to unlock my iphone .thx


Hey. Lots of people asking this with no clear answer. I have an iphone 4 baseband 4.12.1. I previously updated to 5.1.1 and then did the redsn0w downgrade to 5.0.1 but my baseband stayed. Is it possible to change baseband without Sam tickets? Thanks!!!

Jasjeet Singh

i can get you factory unlock for 20 pounds ? what network is it

Jasjeet Singh

let me know the network you are on ? and there is definitely minimum charge of 20 pounds


Hi Jasjeet,

I have an iPhone 4 (5.1.1 , 04.12.01) locked with ATT , US. Can you unlock it? If so mail me at manish.mnit@gmail.com


Hey I am on Vodafone India, n fone was locked to AT&T US, n iOS 5.1.1 & BB 4.12.1...can u do it for me


can any one unlock my iphone4 ios 5.1.1 bb 4.12.01 on at&t?

Seem Mujawar

I can factory unlock any iPhone with any bb interested peoples contact me on ahtesh4i@gmail,com


All I did was simply upgrade to 5.11 with my Itunes and it worked fine - I didn't even have to restore the saved tickets. after upgraded to 5.11 my cydia and sams icons were gone, i just jailbreak again and install cydia........


iphone 4 locked to swiss orange.Can anyone Provide me a unlocking solution????

Parid Qose

Can you unlock my iphone4 from orange UK? I will be very glad. Please contact me at paridqose@live.com


para o windows nao esta dando certo


iphone 4 ios 5.1.1 bb 4.12.01SFR France. Is there any unlock solution??


I have a question, Let's say that I have a friend and he backup he's ticket . and we both have iPhone 4 IOS 5.0.1 baseband 04.11.08 , will he's saved ticket work on my iPhone ?

Thibaut Rey

Hi, I saved my SAM ticket with my iPhone 4, 4.11.08 IOS 5.0.1 baseband. I have a problem yesterday and I should upgrade to 5.1.1 I have preserved baseband with PwnageTool. But when i tried to restore my Lockdown folder to my iPhone i have no signal messages. I use the same iPhone with the same sim card and same LockDown folder and my baseband is preserved as shown in preference of the phone. Can someone help me ?


Hi Jasjeet,
I have an iPhone 4 (5.1.1 , 04.12.01) locked with ATT , US. Can you unlock it? If so than email me @ ro_naik05@hotmail.com...plz help me...


have an iPhone 4 (5.1.1 , 04.12.01) locked with ATT , US. Can you unlock it? If so than email me @ ro_naik05@hotmail.com...plz help me...


My idevice firmware 5.0.1 bb 4.11.8 unlock by SAM, i want to upgrade firmware 5.1.1 but i don't have official sim its possible to unlock again?

Tecno Electronicz

I can factory unlock your iPhone, I can prove you.... I give this service on my Facebook you can contact me.... And we can agree to proceed... THX

Tecno Electronicz

I can unlock your iPhone 4......

Tecno Electronicz

Yes I can

Tecno Electronicz

yes I can unlock your iPhone, look for me at Tecno ElectronicZ, 100% secure

Tecno Electronicz

I unlock iphone 4, you can look for me at Facebook Tecno ElectronicZ, I unlock by IMEI

Tecno Electronicz

I factory unlock iPhone 4 and 4s, any baseband or iOS...... look on my Facebook, completely secure.. !


after i do this unlock, can I go to (for example) Japan and put in a international sim card into my iPhone and just plug and play?

luiz rocha

I do not know if my iphone is the at & t. how to tell the operator and if I can unlock it. (IOS 5.1.1 Baseband 4.12.01). please, help-me!!!


when i did update throught sn0wbreez no baseband update i got factory unlock screen on itunes when done


cant we unlock with another Lockdown file?


Do I update my iPhone to iOS 5.1.1 before I look for the SAM unlock tickets or I upload the ticket before updating on iTunes. Currently I'm using iPhone 4 with 4.3.5 bb 4.10. I tried to upload the tickets but reds now can't find it. I backed up Sam with cookie app before it stopped working. Please show me how. Thank you.


please write me a mail to unlock mape@psychedelictrance.de


I have iPhone 4 iOS 4.3.5 bb 4.10 I unlocked using Sam before it stopped working. I want to update but I tried to find the saved Sam ticket using redsnow the system says it cannot find my saved ticket. If I update using iTunes will I loose my unlock?


bro i have an i phone of uk three carrier and i wana unlock it will you help me ?? my id is specialbird2008@yahoo.com


Am I able to copy my activation ticket, which i've taken on my old iPhone, onto my new one (the SIM-card is the same one)?


*I've backed up it which cookie..


guys i unlock iphone4/4s at reasonable prices n u'll never get complaints or any problems from me n i unlock all networks i promise n hence if interested contact me now at iunlocker@live.com


yes i can contact me at iunlocker@live.com


i can help u contact me at iunlocker@live.com


yes sir i can unlock ur phone permanently just contact me at iunlocker@live.com


yes i can unlock contact me at iunlocker@live.com


contact me sir at iunlocker@live.com

black eagle

i wanna unlock my iphone4 5.1.1 4.12.1 how i need help

black eagle

my email waltoo.11@hotmail.com
send me massage

Luis Albert Winchester

i want an unlock for my iphone 4 baseband 4.11.08,


I have a so called Turbo Sim Iphone 4.3.5 and i tryied to upgrade the system into 5. Now i cant open my phone because it requests a valid sim card?? I dont understand what should i do?


I jailbroke two iPhone 4 with ios 5.1.1 baseband 04.12.01 using this tutorial on youtube. The link is below. Hopefully it will work for you as well.



Boas, consegue desbloquear o iPhone 4 rede orange inglesa?

Derrick mcDonald

i have a iphone 4 5.1.1 modem firmware 04.12.01 locked to Fido. anyone who can unlock this help me? derrickmurraymdonald@gmail.com


maybe samone can unlock factoy me iPhone 4 04.11.08 I pay grigalismindaugas @gmail.com uk 3network


Hi Jasjeet,

I have an iphone 4 (5.1.1, bb04.12.01) locked with telcel (Mexico) can you unlock it?? if so, please send me an email to juliomedes@gmail.com. I want to use it in the UK with Three.


Will this unlock every sim on this baseband?


Hi Derrick, I have exactly the same phone specs. Please let me know if you got any assistance here. nkathajacob@gmail.com


have iphone 4 baseband 04.12.01 canyou unlock reply mayoladron@hotmail.com


I've an iphone 4 locked with carrier TELUS 12.0 with OS 5.1.1 and firmware 04.12.01.

I have a question whether the mentioned steps are trustworthy enough or not?

if yes then whether if i update the version after unlocking will reverse it back to previous state or not?

please reply: razza272@yahoo.com

Oluseye Amoniyan

Can you help me unlock iPhone 4 O2 uk?


Yes, O2 Uk can be Unlocked. Read more here: http://unlockboot.com/2012/08/unlock-o2-iphone-4.html


I was given a iphone 4 but it was from Digitel in Venezuela. I need to use it for ATT in the states please help. If you know how to unlock it email my dtaribo@gmail.com


iphone 4 with 5.1.1 completely updated and baseband 4.12.01


It's unlock factory?


the same problem. iphone 4 4.12.01 and ios 5.1.1

Tärûñ Šøūńdh

i tried to unlock my iphone 4 ios 5.1.1 baseband 4.12.01. but it didnt went through. can u help me with that


i have a iphone 4 5.1.1 modem firmware 04.12.01 locked to O2 anyone who can unlock this help me


hi derrick & jacobs, so do i here, let me know if you find the way at koepit_ne@yahoo.com


You can Unlock iOS 6 on any device.


how to get lockdown.zip


This did NOT WORK!!! I have iphone 4 with ios 5.1.1 and the baseband 04.12.01

Ray Darwin Dantes

i have an iphone 4 ios 5.1.1 baseband 4.12.01 from japan. Can you help to unlock this? thanks! contact me at raydarwindantes@yahoo.com.ph


SAM unlock is valid only for my SIM card or other SIM cards will also work?

aditya sharma

couldnt find any activation tickets


Please read the article!


Yes, please read this article to unlock sfr iPhone - http://www.unlockboot.com/2013/01/unlock-sfr-iphone-4-4s-5-imei.html


Yes -- you can use factory unlocking.


Sure -- http://www.unlockboot.com/2012/08/factory-unlock-att-iphone-4-4s-imei.html

vanjo tapang

I got my iphone 4 upgraded to iOS6.1 with preserve baseband but cant restore the sam ticket using the redsnow or the manual restore using ifile and dropbox. And still I get no service what would be the reason why this happening? :(


salut conttact me loko4cs !!!


my iphone 4 ios 5.1.1 baseband 4.12.01

Canada ,bell unlock possible