I have an iPhone 2G and 3G that I am keeping as antiques, I thought it would be cool for them to have there original software on them, is there a way to do this? The 2G has iPhone OS 3.1.3 and the 3G HAS IOS 4.1.2 thanks
Got a tip for us?
Let us know
Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
How do I downgrade my iPhones
- Thread starter alexbreen
- Start date
- Sort by reaction score
the ipsw files aren't what's difficult to find... a quick google will get you pretty much any file you want.
The problem is you need SHSH blobs saved for those devices on those firmwares in order to install that firmware version.
Apple doesn't sign old firmware versions anymore, so the only way to get those firmwares on device is to have the SHSH saved and "trick" iTunes into accepting them and not looking to apple's servers to get the firmware signed.
Basically, if you don't already know this, it's too late and you are screwed. You will never get those back to their original firmwares at this point.
The problem is you need SHSH blobs saved for those devices on those firmwares in order to install that firmware version.
Apple doesn't sign old firmware versions anymore, so the only way to get those firmwares on device is to have the SHSH saved and "trick" iTunes into accepting them and not looking to apple's servers to get the firmware signed.
Basically, if you don't already know this, it's too late and you are screwed. You will never get those back to their original firmwares at this point.
I can't downgrade my iPhone3G from IOS4 to 3.3
Ha , well I went thru' DFU instructions and downloaded IOS 3.3 IPSW on Camino but couldn't open it!! Then I find that as i have iTunes 10 I can't get it to accept a lower version IOS even if I could open it......am i missing something here?
Ha , well I went thru' DFU instructions and downloaded IOS 3.3 IPSW on Camino but couldn't open it!! Then I find that as i have iTunes 10 I can't get it to accept a lower version IOS even if I could open it......am i missing something here?