iOS 4.2.1 Recovery Mode Exit Not Supported By TinyUmbrella!

For all those who have been eagerly waiting for iOS 4.2.1, we have some important piece of news to share. notcom, the guy behind TinyUmbrella, a tool which lets you save SHSH blobs both locally as well as on Cydia servers, has warned about an ensuing problem related to iOS 4.2.1 update.

According to notcom, TinyUmbrella cannot kick you out of recovery mode because of a baseband version requirement cleverly put by Apple in iOS 4.2.1. See his tweet.


Don’t update to 4.2.1. TU cannot kick you out of the ensuing recovery mode. Apple was cute and put a BB ver requirement on the firmware.

He also goes on to add this in another tweet:

The new BB requirement for firmware is a startling revelation. This has implications reaching beyond just folks that need to unlock… =/

Which means not just unlockers but jailbreakers in general are going to be affected by this.

Redsn0w 0.9.6b4, released today by the iPhone Dev Team can jailbreak iOS 4.2.1 on iPhone 4, 3GS, 3G, iPod Touch 4G, 3G, 2G, and iPad. But only the older devices including iPhone 3GS (old bootrom), iPhone 3G, iPod Touch 2G (MC) can have an untethered jailbreak.

Rest all, your jailbreak is going to be tethered till Comex releases a patch. Which means each time you reboot your phone, you will have to boot it into a jailbroken state. See this article for iOS 4.2.1 jailbreak and unlock update.

You may also like...

19 Responses

  1. Unreal says:

    I was stuck in recovery mode took a few hours to figure it out.

    all i did was make another custom firmware and chose do not upgrade firmware with 6.15 because i already had it and it works perfectly fine now.

    • Jimmy says:

      I have the same problem – stuck in recovery. How did you get out? How did you make another custom firmware, and how did you get iTunes to recognize your phone again?

  2. M1KE says:

    I Have the same problem, 3GS 4.2.1 Stuck in recovery mode, I tried iRecovery and nothing worked, any help????

  3. dr gauravsuneja says:

    yippy ireb did it on 4.2.1 to get outtta recovery mode and made me frightened too of green screen of life ,and i downgraded my iphone 3g to 4.0 with stock fw from ios 4.2.1

  4. Jar3d says:

    Any hope for those of us stuck in recovery mode with iOS 4.2.1 and BB 6.15.00? Even a little glimmer of light for a future fix would do wonders. 🙂


    • Unreal says:

      Make another custom firmware but when it asks you if you want to update the basement say no and put the phone In DFU mode and it should restore fine.

  5. carlos says:

    hi i know how to get out from recovery mode when you are stuck after update to 6.15.00!! but i think that i´m the only person that knows how to do it i had a look in internet and nobody knows how!
    Is really easy but you have to use the exactly softwares and step by step procedure!! contac my email and i will tell you how to do it! but unfortunatelly i will ask you for a small paypal transaction before i will send you the email with the process you have to do! I´d been stuck on recovery mode a week and yesterday i found the way to do it!
    after a tired week! sorry about my english!
    if it does´t work i will give to you back the money! I´m asking for 10 pounds! is not a really expensive value!
    And this is not fake ! i´m an honest guy!

  6. vit says:

    please, send me instructions to !!! thanks!

  7. Mekatech says:

    can u pls upload a link of the custom firmware?

  8. VIRUS*CELL says:

    well here is what i did to get out of recovery mode i just started redsn0w 0.9.6b5 and got to the part where the phone must be off and plluged in and i couldn’t get it off cuz of the recovery mode so i just tried this out i pressed the turn off button and then next on redsn0w and put the phone into dfu mode 😀 and redsn0w was doing it’s work but i was jb’ing ios 4.2.1 just you know 😀 cheers i hope i helped

    • Aust1n says:

      I’m stuck in recovery mode too. When I try to restore I get error “iPhone could not be restored 1015”. Can anyone help? (and VIRUS*CELL, use punctuation)

  9. Abdu says:

    I have the exactly same problem, with my brand new iPhone 4, what can I0 do, and when I try to restore it comes with errors..
    I tried tinyumbrella,recboot and irecovery none of these seemed to work.
    Thanx, sorry bad english.

  10. VIRUS*CELL says:

    well i found a new way to do it just download a custom 4.2.1 firmware that itunes accepts

  11. Madusa says:

    VIRUS*CELL – can you tell us where to find the custom 4.2.1 as well as a step-by-step guide on how to do it – for us Noobs.

  12. Alex says:

    FIX to error `1015 recovery mode 4.2.1
    Download ios 4.1 here:
    and restore with itunes. When you get error 1015 use tinyumbrella!
    (it doesnt work with 4.2.1, but it does with 4.1)

  13. Houman says:

    I downgraded my ipad1 from 4.3.2 to device stocked at recovery mode.i tried tinyumbrella but didn’t worked!! then took my device to DFU mode, jailbreaked it with greenpoison rc6.1, and my device booted up and works fine.

    • /escape/ says:

      THANKS THANKS , working fine :))))))))))))))))))))))))))
      3 days I was tortured and then I saw your post
      THANK very MUCH