How To Downgrade iPhone Baseband 06.15 To 05.13

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This is a very simple guide to follow for downgrading iPhone baseband for 3G & 3GS 06.15 back to 05.13

Downloads:
Redsn0w 0.9.15b3 Windows & Mac Updated on 4th July to fix 3Gs bug downgrade.
http://blog.iphone-dev.org/post/33546509336/restoration-reinvigoration

Firmware Download:
http://www.felixbruns.de/iPod/firmware/

Added firmwares that you have asked for:
iPhone 3Gs 4.3.2
http://appldnld.apple.com/iPhone4/041-0660.20110414.Gwed5/iPhone2,1_4.3.2_8H7_Restore.ipsw

✓ For more updates and help come follow me on twitter.
https://twitter.com/#!/DinoD7

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33 comments

  1. More Related Tutorials Below. Supports iOS 9 / 10 / 11 – 11.2.5 NO Jailbreak
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    Install Hacked Apps & Games FREE (Get In App Purchases FREE)
    vShare https://youtu.be/q0xjzvLjLvY
    TweakBox https://youtu.be/cvkKyQN0obI
    Golden Cydia https://youtu.be/gKPlxREfwFA
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    Premium Hacked Games https://youtu.be/LZ1_djPphpo
    Tweaked ++ Apps (Modded Apps) https://youtu.be/3LDnz7ztKS8
    Snapchat ++ (Modded Snapchat) https://youtu.be/f2IFYh68yHM

    Movies, TV Shows, Cable & Music FREE Section
    Kodi https://youtu.be/miVAVTjocr0
    Cinema Box https://youtu.be/dfeqMT_aPNg
    Bobby Movie https://youtu.be/oHc_MYdFSBo
    Popcorn Time https://youtu.be/YE5Pg4J-P6o
    Sound Cloud ++ https://youtu.be/u62qPBnZQdo
    Deezer Premium FREE https://youtu.be/k-JJkBNtRBU
    Movie Box & PlayBox HD https://youtu.be/SxSrNW-G6sw
    Live Sports & Cable TV FREE FREE https://youtu.be/c3TjF7WRv8E

    Emulators & Games FREE Section
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    NDS4iOS Nintendo DS https://youtu.be/W1YzKyCSZTU
    DELTA GBA, SNES & N64 https://youtu.be/uo7TcZknnqc
    iNDS Nintendo DS (Modded) https://youtu.be/QBqFO0jPsGU
    NewGamePad Multi Emulator https://youtu.be/10iMK-ozSGQ
    GBA4iOS Game Boy Advance & Color https://youtu.be/1IpHFM7Xs5s
    PPSSPP PlayStation Portable iOS 11 https://youtu.be/0u-gyJmJzpg
    Happy Chick Multi Emulator Includes PS1 & N64 https://youtu.be/GA6Np6jbODE

    Gaming Controllers iOS Games & Emulators Section
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    Magic Cleaner Clean & FREE Up More Space https://youtu.be/VQYnw0AIK6Y
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  2. Hello D7!
    I have an iPhone 3GS with new bootrom, running iOS 4.3 with 05.16.08 baseband. Currently it's jailbroken, but it doesn't find a carrier.
    How can i maintain an untethered jailbreak and at the same time, have it unlocked?
    If I run redsn0w again, select a 4.3 ipsw file and when i can configure my jailbreak data I select install iPad Baseband (06.15), then i run the whole thing once again and select Downgrade iPad Baseband (06.15 To 05.13) will that work?
    I want to have full GPS functionality too.

  3. Hey man, I'm trying this as well and believe im having problems.. On a iphone 3g 4.2.1 cfw all that happens after I do that process is just a blank screen? No words or pineapple dude. Does it matter?

  4. just tried this on a new bootrom 3gs and it worked great first try.
    The only thing I did different to the vid was use a 6.0 ipsw instead of 6.1.3.
    Dino, thanks again for all the help… Thanks to you I have upgraded ios, hacktivated, jailbroke, unlocked network and downgraded baseband.
    As soon as I downgraded the BB my 3g signal has been much better, wifi is better and Ive had no disconnections and no more random app crashes.
    Cheers Dino.

  5. DinoZambas2, mate, Ive just checked and the 3rd 4th and 5th digits in my serial are 014, so that means Im on the NEW bootrom because the '0' signifies 2010, so that's obviously after week 45 of 2009 making mine the new bootrom?
    Can you please confirm that I am on the new bootrom and that this BB downgrade does work on the new bootrom?
    Any help would be appreciated as always mate, cheers.

  6. my phone started an infinite loop showing this message "restore needed, you cant make or receive calls" what should i do in that case?, i cant use buttons, (i used redsnow to make an ENTER_DFU instalation). Please Help!.

  7. Followed the instructions and it worked well. The only thing I did differentley, I took the sim card out before the process. When I put it back in I got signal within 5seconds. My GPS worked fine on 06.15, I was able to use foursquare and maps (within 100m mistake) and it is not any different now. Still have mistakes. Any suggestions?

  8. Hey Dino, thanks for all the videos, your the one I always go to for iphone jailbreaking, can you tell me if I can downgrade using this method from any firmware? I have iphone 3g with modem firmware 05.15.04 and would like to go to 05.13 in order to have carrier unlock

  9. Great video – just downgraded mine and it actually worked 1st time, a bit worried at first, absolutely no problems in doint it, thanks very much, GPS now back to normal. Sweet. Major respect to you for showing us.

  10. i have 88945 serial… can i downgrade it? my iphone 3gs now is in No Service state… i upgraded it into iOS 6.0.1 via itunes, jailbreak and install ultrasn0w but still no service. will this fix my problem? your help is much appreciatred… it also has this when i checked in device manager… [IBOOT-359.3], what should i choose if asked whether newer or old model?

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