Things to Consider Before Upgrading to iPad’s Baseband 6.15.00

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When the iPhone 3G and 3GS ultrasn0w carrier unlock came out 2 weeks ago, it made everyone excited and liberated thousands or probably millions of iPhones.

UPDATE: Forget about installing iPad baseband on your iPhone, make it officially unlocked without hacking or jailbreaking here.

Everyone knows that it was made possible through the use of iPad’s baseband version 6.15.00. iPhone 3G and 3GS’ original basebands 5.14.02 and 5.15.04 were left in the dark, and probably can never be unlocked, ever.

Editor's note: learn more by reading our ebook on starting your own iPhone repair & unlock business

So, if you plan to implant iPad’s baseband 6.15.00 into your iPhone 3G or 3GS, you may want to read and consider the following:

  1. There is no software downgrade procedure available once your baseband has been upgraded to 6.15.00. However, @MuscleNerd is currently working on this.
  2. If you have a baseband 6.15.00, you will NOT be able to restore using the original firmware. That means iTunes will give you an error message if you try to restore it directly from there. You can only do it via a custom or ‘cooked’ firmware created with redsn0w or other tools such as sn0wbreeze.
  3. GPS will not work properly (or not working at all!) on your iPhone due to this baseband although a fix is said to be on the horizon.
  4. You will void any Apple warranties as they can easily detect this baseband if you bring it in for service.
  5. The resale value of your iPhone may be lesser due to the above, that’s if you intend to sell it at one point. Otherwise, this is not really an issue.
  6. UPDATE: iPhone 3GS produced after week 28 of year 2011 is not compatible with iPad baseband. Read here.

If these do not bother you at all then you are ready to unlock your iPhone. You can follow the steps here. Alternatively, we provide hardware unlock by replacing the baseband chip which contains iPhone’s original baseband 5.13.04 which is already unlockable. This will eliminate most of the issues above.

Things to Consider Before Upgrading to iPad’s Baseband 6.15.00 was last modified: May 27th, 2013 by Jonathan

Comments & Discussion

  1. I have an iphone 3gs with 5.14.02 Baseband and there is no unlock for it except upgrading to 6.15 iPod Baseband. Am I going to lose the Anthena Signal of it if I upgrade it? or Am I going to suffer the battery failure and loss?
    I appreciate you answering me…

  2. Pingback: iPhone 3G or 3GS Digital Baseband Processor Replacement |

  3. Hi, I've got an iPhone 3G running iOS 4.2.1 and its been unlocked with the iPad baseband. Since it was upgraded 2 months ago it has stopped syncing with iTunes. I've tried with iTunes from version 8 to the latest one. It doesnt sync with any. However the diagnostic test shows that an iPhone is connected and the sync tests fail. I've tried rebooting PC/iPhone, reinstalling itunes, stopping starting service, etc, but no success. Any solutions for this? Thanks very much.

  4. I have a iPhone 3g I upgraded to the 06.15.00 firmware, but I found out my bootloader is 5.09. Is it still unlockable with ultrasn0w????

  5. I have upgraded to IOS 4.3.1 and baseband 6.15 and now i have now signals for more than week. I tried the link of ultrasnow thru cydia but i couldnt find it.Please Help!!

  6. Did the Dev Team find a solution on how to downgrade 4.3.1. BB 5.16.02.? I'm so desparate. I bought it new in Miami, unlocked and it's the only phone I have in Haiti. I updated my software without knowing it would lock on me. I recovered it in iTunes and then it locked on me. The primary screen is the iTunes screen (with the USB aiming at the iTunes logo), so I cannot get at my homepage. :(

    Any advice?

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