Even though jailbreaking is now legal, the cat and mouse game will never stop between Apple and the jailbreak community. Last example is the fact that iOS 4.2.1 has introduced a new baseband requirement, as explained by Notcom, the developer of TinyUmbrella.

While it’s not clear yet what Notcom means by “baseband requirement”, we can nonetheless assume that it is some kind roadblock that’s going to make it harder for us to jailbreak, unlock, and downgrade.

Here is what Notcom has to say about this new baseband requirement:

It seems that Apple has decided to put a baseband requirement on iOS. So at this point, if you are using Saurik’s server or tiny umbrella and trying to restore 4.2.1 on an iPhone 4, you will end up in recovery mode and tiny umbrella will not be able to pull you out of recovery. In this case, you will have to restore 4.1 again or you will have to restore 4.2.1 stock and be tether jailbroken. (Of course, I recommend 4.1 and not bothering with 4.2.1 at all). If you are an unlocker, this is a no brainer. Do not update to 4.2.1 even to test it at this point.



  • Burge

    Looks like Apple are getting smart…but the dev team are smarter..just don’t update yet wait for the ok . And it you need a unlock dont update until you know there is a unlock.. There will be a post on this site just keep a look out

  • rizo g

    lol … nice picture … quite appropriate for the ssituation we find ourselves in

  • Jaff

    I guess the “baseband requirement” is something that requires you to have the preceding baseband version for you to have it fully updated. For example, iPhone 3G owners who updated to iOS 4.1 which preserves the 5.13.04 baseband cannot update to iOS 4.2 as it requires the 5.14.02 baseband for the iOS 4.1. But anyway, to correct myself, I can still update to 4.1 for me to have that 5.14.02 baseband as what the requirements may be. Just a wild guess though!

  • TBui123

    nice picture

  • Steve

    Following on from the anti-competitive court cases, huge fines and finally changes that were brought against Microsoft for forcing IE on people, is is not about time Apple met the wrath of the world’s legal systems to force open choice on which apps and add-ons people can run on their iOS devices?

    • TBui123

      Apple not forcing people to do any thing, they just sit back and watch to see who is smart enough to break ther codes. They are not sueing any one for jailbreaking or unlocking, they just not going to give it out for free. Supply and demand, that’s why the iPhone holds their price and value so much (beside the fact that they do have one of the best operating system out there). Windows Live, Android, Google, Blackberry are all out there for you to choose, they just havent’s catch up to Apple. We have choices, and believe me, I have tried them all, I have to give credit where credit’s due, Apple iPhone is still superior for the overall consumers, the big thing is they are very user friendly.

      • Jon Garrett

        you said “iOS is the best operating system out there”? Id like to ask you, “in what why is it the best”?

        Android users dont have to Jailbreak, they can install what they want and customize how they please. to mention that iOS does not support flash and certain video formats that Android and Windows mobile can.

  • voodoo

    here notcom explain in his blog :
    UPDATE: Do not update to 4.2.1 for the baseband protection. TinyUmbrella is no longer able to kick you out of recovery for that version. TinyUmbrella still works for prior versions and will be able to restore and kick you out of recovery for those versions but 4.2.1 has a baseband version check that will stop your device from booting if your baseband was not updated.

  • Don’t carr about unlike that much because in Canada you can get an iPhone on any carrier…..but I couldnt live with my jailbreak. Go dev team.

  • SillyBear

    Honestly at this point I’m sticking with my JB 4.1 until iOS5 comes out. 4.2 brought minor updates and I see the same for 4.3

  • DGizza

    ok i updated to 4.2.1. now im trying to downgrade back to 4.1. when i open tinyumbrella it says my host file is not writeable and cannot start TSS server. what do i need to do?

    when i was stuck in recovery mode i took out the line in the host file that had gs.apple.com. i tried putting it back in and nothing happened.

    • TBui123

      you’rs SOL for now.

  • Bob

    Ditto. Sticking with 4.1 untethered and unlocked.

  • darkhorse2800

    I’m sick n tired of apple n dev’s cats n mouse game. I’m moving to crackberry

  • DGizza

    SOL? theres nothing i can do to get on 4.1?

    • Steve

      It sounds like there’s a problem with TinyUmbrella, and NOT with your iPhone. Do you have SHSH saved for your iPhone for 4.1? If so, you should be able to downgrade, provided you get TinyUmbrella back up and running.

      It looks like you did something to your host file such that TinyUmbrella can’t write to it. Check the permissions for the file- is it now locked or anything like that? You could also manually add the apple host line to point to Saurik server, then try to shift-restore in iTunes to 4.1.

      • Steve

        I forgot 1 thing- what baseband are you on now? And how did you update to 4.2.1 in the first place? I think your phone will be on the current baseband (not unlockable), but you should be able to downgrade back to 4.1 if you have SHSH saved. To my knowledge, 4.2.1 did not introduce a brand new baseband (but would upgrade you to the new baseband introduced in 4.1?)

  • Pissed_Off_NERD!

    My thought are…
    Good people at APPLE….Knock it the F*ck Off!!!!! – The JB Community are the ones keeping the iPhone Alive!!!! If not for the Dev Team,Saurik,GeoHot and hell even Sebastian the iPhone would just be another smart phone & I would have a 4G on TMOBILE!!!!

    • Ryan

      That’s a blatant lie. There are millions if people who haven’t jailbroken their phones that keep the iPhone “alive” the jailbreak community is a small fraction of all iPhone users. And 4.2.1 only adds some minor bug fixes and new SMS tone. Stuff the jailbreak community could do ages ago

  • Jarod71

    This is why I moved to Android. I still love my iPad though… But as a phone, I’m tired of this bullshit. My Evo 4G may not be as polished as iphone on iOS but i’m loving swype and all the other great tools out there for android…. miss some games but there are some great ones on Android too… Apple needs to get on all carriers and loosen up. I would never go stock iphone, I got so used to BiteSMS, now i have ChompSMS on Android and never have to wory about losing it…Android is better in so many small ways, and I was a die hard iphone fan unti the 2gb cap and iphone4 issues…

  • Dan79z

    I have waited 2 months for an unlock for my 3GS (4.1 05.14.02)! When I bought this phone second-hand on o2 network for £330! I thought I’ll get it unlocked – never in my wildest nightmares did i think that apple would make it so difficult for everyone simply just to unlock. My phone may be JB but it’s still locked. My patience is growing thin I’ll wait 1more month (ie 3 months in total) then I’ll probably get an android phone – your fault apple!

    • Burge

      Ask O2 to unlock it from there network thay can do it for you

  • Manuel

    I don’t understand the stupidness to crapple. If people unlock the phone, that brings them more money into they pockets. A phone without a contract is fucking 656 and 756. That’s for the 16 gig and 32 gig. Saying that, them putting these stupid rules to lock the phone to AT&T or other carriers just makes them lose more money, and the funny thing is, AT&T and a lot of these other carriers that don’t want people to unlock and go to another carrier who doesn’t have the iphone, have all they ads on on Cydia. What a joke.

    The baseband requirement means this.

    So lets say I’m on 4.0.2 and I have an iPhone 4 via T-Mobile. If I upgrade to 4.1, I’ll lose my baseband, however, If I use tinyumbrella, I can update and get the iTunes 1004 error, then have tinyumbrella kick me out of recovery mode. Thus, I will be on 4.1 and I will have saved my baseband. This is no longer allowed and the baseband requirement means you MUST update it, in order to go to 4.2.1.

    I think the 4.2.1 update instead of 4.2 was pushed back to fix these issues. Although were jailbroken for life, it doesn’t help when you can’t shut your iphone off. Your basically stuck with a brick. Hopefully, they can make the untethered jailbreak happen.

  • Manuel

    Or at least a Semi-tethered jailbreak. That will help everyone

  • Z

    Has Apple stopped signing 4.1 already?

    • Pokeya

      Apple has not stop signing 4.1, however, you should have had your SHSH backed up along time ago brother

  • Da King

    @ Jon Garrett

    What are YOU Talking about. You guys at XDA do something called jailbreaking to allow your phone to get pass the other screen without lagging to death or dying within 2 seconds. At least iOS is not a battery hog like that Android OS. I see stupid people overclocking 90% of the time, killing they sad battery even more. People root just to take off those pointless apps that Android and HTC try to stick you with to waste your space. Plus, almost 85% of you root “jailbreak” your phones just to do stuff your so called “open sourced” phone doesn’t allow you to do. You can add widgets. WOW, another way to kill your battery. You can add a theme, shit I could too. You have flash, I do too. Frash, but Flash on mobile phones and computers are stupid. Hence why HTML 5 is being emphisze so much. Reason why is because flash kills shit. It makes apps crash, computers burn out. Plus, they is skyfire. Android’s market is sad to even download something from. Every time you go through it, the apps that are there are not downloadable because you have to have root on your phone to use it or the app is an rip off from the iphone. Not to mention the best thing of all, your phone has 84 different virus risk. Your shit is a STD waiting to spread lol. I like how I had to root my girls vibrant to take away the lag lol. I think it was called the one click lag fix. Couldn’t use it unless she was rooted. Not to even mention how they is a fucking new android phone every day. You’d think they would take over by now. Tell android to fix those apps that forceclose every 2 seconds before worrying about iOS. By the way, I hate apple and steve jobs, but even I say this, iOS is still better. And when jailbroken, shit, an android phone starts to look like a flip phone.

  • TBui123

    Respond toJohn Garrett about Android being superior to Apple IOS, more power to you if you like Android phone, I tried a Google Nexus One, then an HTC, hate them both, and don’t even go there with Windows Mobile, it’s so unfriendly user that’s not even funny. Each operating system has it’s strong point, however, my feeling is that anyone without any phone tech skill can pick up an iPhone and learn how to use the quickest and most comfortable. It is truly USER FRIENDLY and very efficient (re: the comment above about battery). If you love Android so much, I wouldn’t waste time reading all this from us iPhone junkies. Any way, Happy Hollidays.

    • Pokeya

      I’ve use android and it’s not bad, but I want to be able to use my phone as a phone and not as 4 year old. I couldn’t text, or make calls without freezes, my battery life sucked, I had issues with apps not working for my set of phone. It got sick to deal with it. My phone lagged between screens. I couldn’t put apps on my desktop or the screen would slow down than freeze, and I’d be force to pop out my battery. That’s android, and windows phones are worst. The HTC HD2, the discontinued AT&T MDA and the T-Mobile wing were horrible glitchy, freeze bots. I think I’ll stay to the iPhone. I know it has limitations, but anything it can’t do, cydia will make up for that, and it does

    • Kenmal

      Why to fandroids troll though iphone sites ??????? I have never been on a android forum why should I? I own a fucking iPhone. Makes you wonder if them crapdroid peeps want to venture to the iother side ????????

  • Blubber

    As i heard. The iOS chck the baseband at booting. That’s Why the problem get Caused i think

  • BabylonX

    There’s probably going to be a hack, at least for us with old bootrom devices, that will remove the requirement somehow.

  • dakid

    My phone is version 4.1 (8B117)
    Modem Firmware is 05.14.02

    Can I still jb my phone??

  • willy

    i didnt update itunes so i can still downgrade…. if you need to downgrade from ios 4.2 to 4.1 downgrade your itunes

  • dakid

    I am new to the jail breaking stuff so I really need some help please. As I mentioned above
    I have
    My phone is version 4.1 (8B117)
    Modem Firmware is 05.14.02

    can I still jailbreak my phone and which program is the best to use?? I noticed different programs.

    Blackrain, Redsnow any help appreciated !!


  • Gorgonphone

    Great thread… yes iphones are the best they just feel right when you use them and the best analogy jis using a mac vs using a PC! macs are just smoother sleeker and nicer to use.. not to mention more stable and less virus prone

  • Manuel

    @ Gorgonphone

    Don’t be a tool dude. Mac’s are not prone to anything. They get viruses like PC’s do. I have a macbook pro 13 inch and I have an HP desk top. My desktop can do more with less specs then this mac can do with more specs.

    Mac’s seem to not get viruses because not many people own them, compared to Windows, which is very easy to write a program to. However, Mac’s have so many security flaws, that I’d rather use a windows program then a mac. Safari is the most easiest browser to break down and that’s an apple program. I could imagine how easy it would be to crack down actually OS if tried. How many times have you got an update saying to fix secuiriy issues on your mac, because I know I get a lot. I love my macbook pro. It does stuff pc’s don’t and Pc’s do what macs can’t. But in the end, I think PC’s are more safer because at least you know if you have a virus if you get one. On a mac, it will sit in your computer until one day your shit crashes. I should know because my girl got a trojan on her Macbook and it crashed her Harddrive. We had apple replace it free of charge, not in the warranty because of that. Also, apple does say on they site, that were not prone to everything