How to Downgrade iPhone 3GS Baseband 5.16.02, 5.16.05, 5.15.04 or 5.14.02 to 5.13.04 for Unlocking |

How to Downgrade iPhone 3GS Baseband 5.16.02, 5.16.05, 5.15.04 or 5.14.02 to 5.13.04 for Unlocking

June 19th, 2012 54 Comments

Have you searched on many online forums but couldn’t find the right guide to downgrade to 5.13.04 that allows unlocking with ultrasn0w and without breaking your GPS? Then this is the guide for you.

UPDATE: If you have an AT&T iPhone 3GS, unlock it permanently using this.

You’re probably one of the many folks who have not chosen to update to iPad baseband 6.15.00 due to the risks. Do be aware that the following baseband can’t be unlocked with ultrasn0w:

  • 5.14.02
  • 5.15.04
  • 5.16.02
  • 5.16.05

You should have known by now that by updating to iPad baseband 6.15.00, your iPhone can be unlocked but with the following risks:

Thankfully, the latest version of redsn0w that was just released a few days ago allows you to downgrade from iPad baseband 6.15.00 to 5.13.04. Currently this is the only solution as there’s no way to downgrade directly from a baseband that can’t be unlocked to 5.13.04 e.g. from 5.16.02 to 5.13.04.

You MUST update to iPad baseband 6.15.00 first then downgrade to 5.13.04

Did you read and understand all the risks? OK, let’s proceed.

Apple is still signing iOS 4.1. This means you can still downgrade to an earlier iOS version (iOS usually can’t be downgraded if it’s not being signed by Apple). The reason why you need to downgrade to iOS 4.1 first is so that you can update your baseband to 6.15.00.

[Final warning: Proceed at your own risks!]


1. Backup your contacts, photos, apps etc. Remove your SIM card. (Note: If you made a backup on the latest iOS, you won’t be able to restore it if you’re running on an earlier iOS version.)

2. Download iOS 4.1 firmware for iPhone 3GS or from here.

3. Download redsn0w 0.9.8rc18 for Windows or Mac.

4. Download latest version of TinyUmbrella from here.

5. Remove iTunes 10.5 and install iTunes 10.4.1 for Windows (32-bit) or Mac.

6. Put your iPhone into DFU mode. See YouTube video here.

7. Launch iTunes, connect your iPhone, hold down the SHIFT for Windows or Option for Mac while you click the RESTORE button in iTunes and select the iOS 4.1 firmware file you have just downloaded. If you get an iTunes error 3194, read here on how to fix it.

8. The restore will end with error 1015 and recovery loop on the iPhone, this can be resolved using the “Exit Recovery” button in TinyUmbrella.

9. Start redsn0w 0.9.6rc18.

10. Browse for the iOS 4.1 firmware you just downloaded.

11. Select ‘Install Cydia’ and ‘Install iPad Baseband’. Warning: installing iPad baseband will break your GPS but by downgrading to 5.13.04 later, will fix it.

12. Follow on screen instructions to put your device into DFU mode to begin the jailbreak.

13. When the process is done, you will find that your iPhone is now jailbroken on iOS 4.1 with iPad baseband 6.15.00. To make sure you can always go back to iOS 4.1, launch Cydia and select ‘Make my life easier.’

14. Now download the latest redsn0w that supports iPad baseband downgrade for Windows or Mac.

15. Launch redsn0w. Go to Extras >Select IPSW button in redsn0w to point to the original firmware you downloaded in Step 2.

16. Do a controlled shutdown of your iPhone (“slide to power off”).

17. Return to the first screen and click ‘Jailbreak’. Check the ‘Downgrade from iPad baseband’ checkbox, uncheck Cydia and click Next.

18. Redsn0w will start doing the downgrade and you will see ‘Flashing Baseband’ screen on your iPhone with the Pawnapple icon. DO NOT INTERRUPT your iPhone while baseband flashing is in progress.

19. When done, your iPhone will reboot itself and you will now have iOS 4.1 with baseband 5.13.04 that can be unlocked with ultrasn0w.

20. You may want to update to iOS 5.1.1 which has untethered jailbreak and can also be unlocked with ultrasn0w 1.2.7. Use this tutorial here (it’s for baseband 6.15.00 but will work for any baseband).

Not too difficult right? If you follow the exact instructions this will work 99%.

Good luck and leave your comments or questions below.

If you find this post useful, please do us a small favor by clicking ‘LIKE’ or ‘Recommend on Google+’ below.

Did it work? Buy me a beer! Never required but always appreciated!

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Richard Ker

An IT specialist by day and an iPhone hardware repair specialist by night. Enjoys iPhone jailbreaking, unlocking and hardware hacks.

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54 Comments to “How to Downgrade iPhone 3GS Baseband 5.16.02, 5.16.05, 5.15.04 or 5.14.02 to 5.13.04 for Unlocking”

  1. Neak says:

    Thanks guys you have saved my 32gb iphone by this

    • Snack says:

      When I try to install the Ipad baseband, redsnow 9.16 exits himself while fetching the Ipad Baseband after few minutes. What can I do to fix it?

  2. debby says:

    Thank you so much this works perfectly with iphone 3gs.
    previously, my baseband was 05.14.04 and now it is 05.13.04.
    One thing. when it goes to step fetching ipad baseband files please be patient,
    after 1 minute, the redsn0w disappeared automatically.
    So, I selected new bootrom at the beginning of redsn0w, it works for me even if I have old 3gs.

  3. blourf says:

    after I installed itunes 10.4 it wont recognize my iphone saying it requires itunes 10.5 or higher. (im on ios 5.0.1)
    any tips?

  4. arnobeck says:

    I have an iPhone 3G. It’s stuck on firmware 5.13.04.

    And when restoring 4.2.1, it doesn’t upgrade to 5.15.04. And I get error 1002. Any idea ? please help.

  5. Mac says:

    is it imparitive to have iTunes 10.4.1 or is it ok to have the latest version of iTunes

  6. khufoof says:

    I got up to part 8 (got error 1015) but when I press exit recovery in tiny umbrella it just starts it again and im stuck in a loop

    • jlm123hi says:

      Try using recboot instead. It worked for me when tiny umbrella didn't.

    • HelperFriend says:

      I had the same problem I tried to put it in DFU mode and used Fix recovery and it still didn't work but then I did step 7 again and tried exit recovery and it worked. I don't know what it was but it just miraculously worked.

  7. by33 says:

    I, Thanks for the tutorial ! I could downgrade to 5.13.04 from 5.16.05 fine by following these steps.
    One thing when stuck with error 1015 at step 8: quit itunes before launching TinyUmbrella otherwise you won't get out of the loop.
    Also, is there any way to restore all the contacts and apps previously saved in itunes ? If I restore from itunes, will I get again the baseband 5.16.05 ?
    Many thanks

    • DarkPsy says:

      I Quit iTunes, It still doesn't exit out've the loop, is there anything you did differently.
      Would love to have a bit more on that.

  8. Marinos says:

    If redsnow suddenly exits when "fetching ipad baseband", then you need to repeat the process but uncheck the "Install Cydia" box. Otherwise it just keeps on exiting for no reason. I read this in another related post.

  9. mikel says:

    Thank you sirs! Good job!

  10. tim says:

    I have the 3Gs which I made the mistake of upgrading the baseband to 5.16.05 and os to 5.11. I have tried everything with on success. This solution I have tried. Itunes 4.1 will not allow me to do anything while I have os 5.11.
    Any thoughts?

    Thanks in advance,


  11. Jagan says:

    After installing I tunes 10.4.1, connected in DFU mode. However, the restore doesnt complete due to unknown error (20). Can someone guide me to overcome this issue and complete the downgrade to 4.1 firmware from existing 5.16.05

  12. virginia says:

    i keep getting code 1601 please help

  13. iphonestuck says:

    I have a 3gs 16gb. Follow everything step by step in this guide up to step 8. Got 1015 error after restored to 4.1. Try to use TinyUmbrella 5.11.01 to exit recovery, but after clicking on "Exit Recovery" button in TinyUmbrella, the phone reboots, but then goes back to recovery again. Not it just completely stuck, can't do anything. Is my phone bricked?

  14. Matt says:

    I can't get iTunes to start up with 10.4, tells me the library can't be read and it shuts down.

  15. AzMan says:

    I have an error 20 when trying to downgrade to 4.1

  16. VIRGIE says:


  17. WozMcNoz says:

    I have got to stage 8. But when I run tinyumbrella the exit recovery box is greyed out. How can I get past this stage?

    Any help much appreciated!

  18. Sudheer says:

    It worked like a charm… 1 shot. I tried it with iTunes 10.6.3(latest till date) no issues. Thanks a lot. Love u.

  19. iphonebeginner says:

    I can't get past step 13. Everything was going ok but it didn't reboot normal. Stuck on itunes logo. Do I keep going?

  20. iphonebeginner says:

    didn't work :( now i have an ipod phone that can't get wi-fi

  21. DarkPsy says:

    Hello I'm on bb 5.16.05, I've been stuck on step 8 since the past 2 days, don't seem to find the solution as the ones around the internet don't relate to the iOS 4.1 downgrade.
    I saw a few post about fix recovery43 and fixrecovery421. both of which do not address the 4.1 version.
    I've tried quitting iTunes before launching tiny umbrella to quit recovery, but it won't come out've that.
    Is there any known way to exit this recovery loop?

  22. emy_sergiu says:

    Hello! I can't tick 'next' button in redsnow 0.9.14 after selecting the ipsw because appears in grey ! where I did wrong?

  23. neo2504 says:

    Hello, i have also an 3GS with 5.1.1. A downgrade to 4.1 was not successfull (recovery loop with no exit). So i followed the following steps, directly on 4.1.1 (new BR)

    Step 1 : Use iTunes to restore stock Apple iOS 5.1.1 (9B206) IPSW.
    Step 2 : Run Redsn0w 0.9.14b1.
    Step 3 : Select Clear Cache from "Extra's > Even More" page.
    Step 4 : Select IPSW from "Extras" page and select the location of your iOS 5.1.1 (9B206) IPSW.
    Step 5 : Power Down the iPhone (slide to power off).
    Step 6 : Click Jailbreak and tick only the "Install Cydia" option.
    Step 7 : Enter DFU mode and allow Redsn0w 0.9.14b1 to Jailbreak your iPhone and install Cydia.
    Step 8 : Re-Run Redsn0w 0.9.14b1.
    Step 9 : Select Clear Cache from "Extra's > Even More" page.
    Step 10 : Select IPSW from "Extras" page and select the location of your iOS 5.1.1 (9B206) IPSW.
    Step 11 : Power Down the iPhone (slide to power off).
    Step 12 : Click Jailbreak and tick only the "Install iPad baseband" option.
    Step 13 : Enter DFU mode and allow Redsn0w 0.9.14b1 to install the iPad baseband.
    Step 14 : When the iPhone reboots, either restore from iTunes backup or create a new phone to get access to Home screen and Apps.
    Step 15 : Run Cydia, wait for it to update and then install Ultrasn0w.
    Step 16 : Make sure the iPhone is activated and working with iPad baseband, e.g. make a test call.
    Step 17 : Re-Run Redsn0w 0.9.14b1.
    Step 18 : Select Clear Cache from "Extra's > Even More" page.
    Step 19 : Select IPSW from "Extras" page and select the location of your iOS 5.1.1 (9B206) IPSW.
    Step 20 : Power Down the iPhone (slide to power off).
    Step 21 : Click Jailbreak and tick only the "Downgrade from iPad baseband" option.
    Step 22 : Enter DFU mode and allow Redsn0w 0.9.14b1 to downgrade your iPhone baseband.

    • thanks_neo2504 says:

      Followed these instructions to the letter and everything worked perfectly. No need for any iOS downgrading whatsoever! This should be the main article, as far as I'm concerned.

  24. Slickinator says:

    i did what it said and it said done and restarted and yet it still shows the baseband at 6.15?

  25. bwaard says:

    i keep getting an 'unknown error (20)' when attempting to restore with os 4.1. any ideas? I've tried 2 computers with the same result.

  26. fahd says:

    i successfully updated my baseband to 6.15.00

    but now im stuck after step 17………when i use redsnow to downgrade from 6.15.00 im stuck in “fetching baseband files”…..

    pliz help me any 1……………:(

  27. Epvc says:

    I'm stucked at step 7, when I hold shift and click restore, there is no file to select in the iPhone2,1_4.1_8B117_Restore file.

    PS: I downloaded it from the 2nd link because it wont let me download from the first one.

    any help?>

  28. Epvc says:

    At step 7, when i try to extract the restore file, it gives me an error message saying <a problem is preventing this folder from being encrypted.

    and when i try to restore from the restore file, there is no file to select…

    can somebody help?

  29. fahd says:

    hy mm ok nw iv downgraded to 5.13.04…..iv also installed ultrasnow 1.2.7……….but i still dont get any network, it just searches and then says “no service”……….pliz help……oh iv also installed SAM….

  30. William says:

    Yeaah, I can't upgrade to 6.15.00 without having my phone bricked due to the fact that it was produced in 2011 after week 34. (134) Soo are there any alternatives to downgrading to 5.13.04?

  31. Kim says:

    Hi! Nice guide! I have one question though, if I do the downgrade from the ipad baseband, will the gps start to work again or will it be permanently off? If not then I could just pay a little and unlock my phone with the operator…

  32. william says:

    ok i followed step by step and everything works for both the 3g and 3gs iphones that i have. the problem is that the wifi range has been drastically shortened for both phones. i tried multiple routers and also redone the unlock for both phones at least 3 times each and still no resolve. please help!

  33. kentorwow says:

    everything was great until 11. where i try to install cydia and baseband, just cydia, and just baseband. none works because i get stuck at "waiting for reboot" :\

  34. Don says:

    This tutorial does not work.

  35. myrtille says:

    If redsn0w crashes on the "Fetching iPad baseband files (please be patient)" step, using redsn0w 0.9.6b6 should make it work

  36. Rajesh Sunkara says:

    Thanks Guys,
    It Worked for me.This thread has proven to be a life saver for me.
    My Observations / Tips:
    1. it worked for iphone 3GS manufactured in 2009 41st week (40-45 weeks) mine considered to be with old bootrom.

    2. when it goes to step fetching ipad baseband files please be patient,
    after 1 minute, the redsn0w disappeared automatically. then repeat the process by deselecting Install Cydia. it works like a charm. we can install cydia later once everything is done using redsnow.

    3. if the above doesn't work then try selecting new bootrom. it might work.

  37. Kins says:

    Hey Thanks For This Trick I Applied It In My Iphone 3GS 16GB.. By This Downgrade Base Band Trick My Base Band Dont Down Grade (Still It Shows 06.15.000 In Settings —> General—> About) But My Phone Has Been Unlocked And I Am Using It From Last 4 Days…. Thanks…

  38. [...] Cytuj | #2 downgrade na 05.13.04 / Tutaj znalazłem taki tutorial ale potrzebuję pomocy Downgrade iPhone 3GS 5.16.02, 5.16.05, 5.15.04 or 5.14.02 to 5.13.04 | « Poprzedni temat | Następny temat [...]

  39. Niko_25 says:

    Ok, I have a 32GB 3GS, Running on 05.16.05

    It is Jailbroken, and I wonder if it's worth risking. Has anyone tried with this particular model? Thanks!

    Machine Model: iPhone2,1
    Model introduced: 2009
    Production year: 2011
    Production week: 43 (October)
    Production number: 125 (within this week)
    CPU speed: 620MHz
    Family name: A1303
    Screen size: 3.5 inch
    Colour: White
    Capacity: 32GB
    Factory: QR (Possibly refurbished)

  40. amyelmundo says:

    my itunes suddenly shut when restoring..what to do now??

  41. dajukhan0n says:


  42. dipak says:

    thank u so much….. i got piece after doing that….. can i upgrade it to 6.0.0 there any unlock for it.

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