Downgrade iPhone 3GS Baseband 06.15.00 Using Redsn0w 0.9.14b2 [New Update]
Downgrade iPhone 3GS Baseband 06.15.00 Using Redsn0w 0.9.14b2 - Redsn0w 0.9.14b2, new update has been released by MuscleNerd in order to improve iPhone 3GS baseband 06.15.00 downgrade as many iPhone 3GS were unable to downgrade their 6.15.00 baseband by Redsn0w 0.9.14b1 , MuscleNerd also adds new feature to the new release Redsn0w, the DFU IPSW feature to put your device into DFU Mode if you’ve a broken power/home button
Downgrade iPhone 3GS Baseband 06.15.00 Using Redsn0w 0.9.14b2
Downgrade iPhone 3GS Baseband 06.15.00 Using Redsn0w 0.9.14b2 Release Note
Happy 4th of July! Today’s release of redsn0w 0.9.14b2 improves the iPad baseband downgrade and should cover anyone who couldn’t downgrade with 0.9.14b1. This version covers 3 different types of NOR chips in the iPhone 3G and 3GS (the earlier version covered only the most prevalent NOR chip). We’ve also simplified the process and added logging to help diagnose any remaining stubborn iPhones.
The revised steps are:
- Connect your iPhone in normal mode, then click “Jailbreak” after redsn0w identifies its model and BB version (you needn’t pre-select the IPSW anymore).
- Choose the “Downgrade from iPad baseband” option (you needn’t worry about de-selecting Cydia anymore).
- Do a controlled “slide to power off” shutdown of your phone and proceed through the normal DFU ramdisk steps.
Should the downgrade fail to take, feel free to leave the redsn0w log in the comments below. Use the “Extras->Even more->Backup” button to grab a copy of /var/mobile/Media/redsn0w_logs, then extract the log text file(s) from the zip and paste them into the comments (currently that log file is generated only during baseband downgrade runs).
NOTE: The original warning about 3GS units manufactured in early 2011 or later still holds! They have a NOR chip that’s incompatible with 06.15.00 and so trying to install it will brick the device. Please read and re-read the warning in our earlier post.
DFU IPSW
We’ve gotten a lot of feedback from users who can’t launch a DFU ramdisk because their iPhone home/power buttons are broken or intermittent. We’ve added a new redsn0w feature that lets you enter DFU mode as long as your phone is healthy enough to restore to a normal, everyday IPSW. You don’t need to be already jailbroken to use this method.
In redsn0w, go to “Extras->Even More>DFU IPSW” and select an IPSW that is currently being signed for your device and that you’d normally be able to restore to without any hacks. redsn0w will create an “ENTER_DFU_” version of the IPSW that you can restore to just like any other IPSW, except that now you’ll be dumped into DFU mode towards the end of the restore
(WARNING, your screen will remain completely black…the only way to even know its on is that iTunes and redsn0w will detect it!). The technique used by this feature is 3 years old but surprisingly still works today!
Downgrade iPhone 3GS Baseband 06.15.00 Using Redsn0w 0.9.14b2 Links
- Download redsn0w 0.9.14b2 (Mac)
- Download redsn0w 0.9.14b2 (Windows)
If you don’t know how to Downgrade iPhone 3GS Baseband 06.15.00 Using Redsn0w 0.9.14b2 check our tutorial posted here
i tried to downgrade my 3gs 5.1.1 on baseband 6.15.00 using latest redsnow it just made my wifi, imei disappear…i dont think this is working. i flashed ipad baseband again and the imei was back to normal again..but leaving the phone in no service mode.i had to restore the firmware again. this is a serious problem anyone else has this problem?
I have completed the downgrade and the correct firmware is now listed in SETTINGS -> GENERAL -> ABOUT -> MODEM FIRMWARE. However, I am still reading No Service on my active AT&T SIM card. Any suggestions?
@Joel Chambers – IF YOU HAVE UNLOCKED YOUR IPHONE WITH ULTRASN0W and haveing IOS5.1.1 INSTALLED – after downgrade, simply reinstall the ultrasn0w fixer for 5.1.1 FIRST !, then reinstall ultrasn0w and then just to be sure, reinstall mobile substrate.Then restart IPhone.Good luck ! Hope this works !
i have a 3gs , BB 06.15.0 and serial number :87952J4…. run ios 4.1 ,jailbroken and unlocked . use in china (china unicom and china mobile operator ) i wanted to upgrade to OS5 but people told me because of baseband i cant update to os5 and later os6. here i saw i can downgrade to 05.13.04 . my questions : 1- is my phone serial number allow me to downgrade, (i have read in other website that serial xx134 and later cant downgrade ) and then unlock?
I have an iPhone 3GS with serial 88004xxxxx, io 5.1.1 and unlocked with Ultrasnow 1.27 and untethered with Rocky Racoon 5.1.1 v1.0.3. I tried to follow the updated steps above, but everytime I downgrade it, my modem firmware will show blank. Content of the redsn0w logfile:
Thu Jul 19 00:43:59 2012 00000002 00ec00ec 004c004c S=’80′
Thu Jul 19 00:43:59 2012 1-7: fffffff3
Been doing this a number of times today and got same results. Any clue on how to resolve this? Thanks by the way for all the hard work you’ve put into this! Really appreciate it! Cheers!
Successfully downgraded 3Gs from 6.15 to 5.13.04. Phone is jailbroken with redsn0w and unlocked with ultrasn0w. All is good except iMessage will not work. Is this problem related to the Jailbreak/Unlock?
I upgrade Iphone 3GS to os 6.15 and when using redsn0w to jailbrake, asked me for IPSW and can not find and how, please help
thanks
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