![]() I’m thinking that it will since I have tried everything else imaginable. ![]() Once I receive the new battery and install it, I will update this post to comment on whether this resolved the issue. Since I used an iFixIt battery and did it myself, I have asked them to send me a new battery so that I can try to replace it (again) and do the upgrade. Get a new, replacement battery from the vendor you bought your battery from and replace your existing one.See if Apple will simply replace you iPhone 3GS with a refurbished one – needs to be in warranty, I believe,.See if the party that did the battery replacement will put in the proper battery,.Try to see if Apple will swap out your battery for you,.So, it looks like the only way to have this corrected is to: iFixit is currently sourcing more batteries that will be compatible. Most of the iPhone 3Gs out there will work fine with our part, 616-0431, but as more people with the newer builds need to replace the battery, I imagine we’ll see this issue more.Ĭontact iFixit if you bought a 3GS battery from us and are getting the “Error 29” message. We have not figured out how to determine which battery you need other than taking the battery out and looking at the part number. If you try to use a battery with a part number of 616-0428 or 616-0431 on a newer 3GS, it will give you the “Error 29” message every time. These batteries have to be replaced with a battery of the same part number. All 3 of those part number were successful in updating to iOS 4.0 with the “newer” 3GS. With newer builds of the iPhone 3GS, it appears that they come with a battery with an Apple part number (APN) of 616-0433, 616-0434, or 616-0435. As far as we can tell, this is caused by the battery and the logic board. The iFixIt post seems to point to the logic board within the replacement battery, as well as when your iPhone 3GS was built. It seems that if you have had your battery replaced (or done the replacement yourself – something that I show how to do here), there may be some incompatibility from a hardware perspective. iFixIt Forums – “ Why do I receive error code 29 when I attempt a restore?“.Apple Discussions – “ Error 29 iPhone locked in recovery mode“.And I started seeing some interesting conclusions being offered. Then I started reading through some interesting support threads within the Apple Discussion Forums as well as iFixIt. It looked like my iPhone was officially “ bricked.” The “Cause” – Replaced Battery (?) ipsw files and tried to use previous versions of the iOS, loading manually through iTunes. Previous/Custom Version of iOS – I created some custom.Pwnage Tool/Blackra1n/RedSn0w – tried using each of these to see if I could make something work – nothing did.DFU Mode – tried putting my iPhone into DFU mode (which bypasses the loading of the OS when upgrading/installing).And each time, I got the same issue “Error 29”. ![]() iRecovery – I tested trying to kick my iPhone out of this mode quite a few times (too many to count actually).Here are ALL of the things that I tried to resolve (none of which worked): You can see my blog post on iRecovery here “ How To Get Your iPhone Out of a Recovery or Restore Mode Loop“. In fact, this had happened to me before and I was able to use iRecovery to resolve the issue. ![]() I’m usually not daunted by issues like this. Once I had done this, I went ahead and tried to install the upgrade and I got an Error 29 (seen above): “ The iPhone could not be restored. It is always important (if not critical) to do a full backup of your iPhone prior to doing any type of upgrade. First, I made a backup of my iPhone (prior to trying to install iOS 4.3). This weekend, I tried to update my iPhone 3GS to iOS 4.3 from a previous version of iOS. There is definitely an issue with iPhone 3GS’s that have had their original battery replaced by a 3rd party or done by yourself. It seem that is related to previous versions of iOS as well and is NOT just limited to iOS 4.3. I (and others) have encountered a rather bad issue ( Error 29) when trying to upgrade an iPhone 3GS’s iOS to a later version. With all of the hype that the iPhone 4, iPad 2 and iOS 4.3 currently going on, you might have missed this news.
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