Although multiple warnings have suggested that iPhone 4S users update to iOS 5.0.1 before it’s too late, a new report from iClarified claims that these users should actually remain on iOS 5.0 to ensure the greatest possibility of unlocking their device in the future, should they ever need to unlock.

The news came from MuscleNerd who confirmed that an untethered jailbreak for iPhone 4S running iOS 5 will be released soon after the iOS 5.0.1 jailbreak…

MuscleNerd has confirmed to iClarified that an untethered iPhone 4S jailbreak for iOS 5.0 will be released at the same time as the iOS 5.0.1 jailbreak, or a day or two later. As always, for those looking to unlock, it is standard operating procedure to stay at the lowest possible baseband.

For those that have already updated to iOS 5.0.1, however, it might not be too late.

iPhone 4S users running iOS 5.0.1 are recommended to downgrade their baseband from build number 9A406 to 9A405, since an unlocking method will most likely be found for the earlier build first.

While an iPhone 4S unlock is not guaranteed, iOS hacker MuscleNerd did make an announcement last November claiming that a very promising unlock was in the works for Apple’s latest handset. If an unlock is inevitably released, we’ll be quick to let you know.



  • Since 5.0.1 (9A406) is affected to downgrade the baseband from build number, it’s not possible because baseband cannot be downgraded, so I think the build number is not affected to 5.0.1 Pod2G jailbreak for 9A405 too, you will lose the hope to unlock if u updated to 9A406 build number same, and my iPhone 4S is factory unlocked, so no need to use ultrasn0w and can update to 9A406 like I have now 😉

    • Anonymous

      For the record and because i’m sick of seeing people say it, the baseband can be downgraded if the firmware you are downgrading to is still being signed by Apple …. Every single time that Apple bring out a new firmware I try it and always go back to the previous 1 while still being signed and the baseband ALWAYS goes back down with it, the baseband cannot be downgraded if the firmware you want to go to is not being signed by Apple.

      This is a fact btw before any1 decides to say that i’m wrong and the baseband has nothing to do with the firmware, sadly you are mistaken but like I said, this only applies to a firmware that is still being signed.

      • Anonymous

        I noticed that on my iPhone 4S baseband was downgraded when 1.0.14 (9A406) to 1.0.13 (9A405), so you was right 🙂

      • Anonymous

        I usually am right my friend …. lol 🙂

      • Ken Master

        i’m not sure about iphone 4s but i just unlocked my iphone 3gs wif the 3rd – 5th number in serial is 152 on version 5.0.1 (9A405) and i didn’t even jailbreak yet

  • To make it simple, for those who requires an unlock please stay on iOS5.0 while those with factory unlocked 4s and ipad 2 feel free to upgrade to iOS 5.0.1

    • tells us something that we don’t know

  • -_- i already upgraded but luckily i am on the 9A405..

  • Lol, just lol.

  • What about a an unlock for a regular iPhone 4 on build 9A405? Any news on that? And what ever happened to that baseband downgrade that was mentioned on this site (almost a year ago)? Whatever became of that?

    • Correction. The baseband downgrade was mentioned well over a year ago. Any ideas? Joe? Oliver? Cody? JS? Zech? Alex? Jeff? Sebastien? Anyone?

  • Anonymous

    Why dont people buy unlocked..

    • 16 GB=$650+tax
      32 GB=$750+tax
      64 GB=$850+tax
      …….uhh no thanks

      • So mine is unlocked cz I payed 650 + tax and = 705 is the price I payed so mine is unlocked right????

      • Well actually, for sprint They said that if to bough an iPhone before 11/11/11, it would come unlocked, I did buy it before 11/11/11 and so I have been updating it since but I think they locked because they said that after 11/11/11 they would lock it so idk

      • Kok Hean

        Get an unlocked one from eBay or something.

    • Anonymous

      Because they are 1 of 2 things ….

      1) Cheap

      2) In posession of a stolen phone

      Lol seriously though i’ve asked myself the same question over and over, it costs like £20 in the UK to get 1 unlocked by your carrier so I can never understand any1 staying with a locked phone and still crying about it a year later lol

      • It’s simple. Because not everybody who posts here is in UK and for example in the USA the official GSM carrier AT&T won’t unlock it.

    • Another reason is that here in the USA a 4S unlocked is very limited. A factory unlocked 4S will only let you use AT&T or T-Mobile sim cards. Any other 4S that you buy from another carrier like Sprint or Verizon will unlock the sim tray but ONLY for carriers that are not AT&T or T-Mobile so in effect you can only use international sim cards.

  • So if I update to 5.0.1 9A406 I have to downgrade in order to jb my 4s? Ermmm

    • no you shouldn’t if your only looking to JB. from what i understand this only applies to those who are waiting for an unlock

  • I got mine for sprint iPhone 4S before it was released as unlocked and then they said they looked it but I know mine is unlocked and I have updated it how do I check if it’s still unlocked and I also payed without a contract 🙂 does that matter????

    • Anonymous

      You should be fine. If you buy it at full price off contract then the unlock they do at the store is permanent… Feel free to keep updating as soon as they are released.

      • Because when I put my friends sim card u said I need to configure the iPhone again or something like that

  • Matt

    wow just wow. thanks

  • Just a bit late after telling everyone to update to 5.0.1 for the last few weeks.

    • M L

      Like this was done on purpose. You need to chill……

    • there’s a chance you will have an unlock for 5.0.1, it is just safer to remain on 5.0 where they have the unlock already

  • wait a minute, i dun reli get it, b4 dis ipad 2 jailbreak is released isn’t it? ipad 2 is also using A5 chip, so why pod2g is still facing alot of problem in constructing jailbreak for 4S? i tot its the same concept comparing to ipad 2 jailbreak? isn’t it just the ios 5 problem? why still sandbox and processor cache error is found?

  • wait a minute, i dun reli get it, b4 dis ipad 2 jailbreak is released isn’t it? ipad 2 is also using A5 chip, so why pod2g is still facing alot of problem in constructing jailbreak for 4S? i tot its the same concept comparing to ipad 2 jailbreak? isn’t it just the ios 5 problem? why still sandbox and processor cache error is found?

  • So does this mean Apple is still signing iOS 5.0? Otherwise how the hell are we supposed to downgrade our baseband?

  • i have the iphone version 5.0.1(9A405) can somone point me in right direction, im tryin to unlock is and the bb is 4.11.08, can somone tell me what i need to downgrade, been waiting fior unlock for over 4 months, id like to use my phone for what it is?

    • Go to cydia and check the ultrasnow. You’ll see the list of unlockable bb. If your’s in it then you can unlock, if not then follow @musclenerd on twitter and keep on refreshing your twitter account for rest of your life.

  • Anonymous

    why did they tell us to up upgrad bullshit

  • I hate this because I was on iOS 5.0 and the battery life was great now that I heard that I had to update to jailbreak I did to ios 5.0.1 and now my fucking battery life fucking suckz why didn’t they say his before saying to every1 for the past weeks to updgrade :/ smh

  • Guys, i need some help… im rocking an iPhone 4 with 5.0.1 and 04.11.08… has there been a solid jailbreak and unlock for this yet. I cant seem to find the info anywhere. yes, im a newb =)

    • jailbreak, yes. unlock, no. I just sold an unlocked 16GB iPhone4 ON EBay …. 550$ on iOS4.0 1.59.00 baseband <— only unlockable baseband for iPhone4

  • Anonymous

    U can downgrade the baseband on only signed apple firmwares 😉

  • We all know how a regular unlock in the USA on a GSM iPhone 3gs or 4 works but what about this unlock for the 4S musclenerd has been talking about?

    The simple and direct question nobody has answered is :

    With this unlock for iPhone 4S will you be able to use the 4S on any carrier in the USA? Even more specifically will you be able to buy a Sprint iPhone 4S and use it on T-Mobile USA by just inserting a T-Mobile USA sim card?

  • Are there news for an upcoming iphone 4s unlock?? …Im sick and tired of having the 4s in my drawer. How long should we wait?

  • my iphon 4s is sim locked so it will say there is no way to unlock now