iOS 4.1 should be released sometime this week (may be Wednesday?) and we will inform you whenever iOS 4.1 is released. Before you rush and click on the update button in iTunes, read this article carefully, we are covering a few steps you want to go through to get ready for upgrading to iOS 4.1. We are showing Compatible devices, What's new, Notes for jailbrokers, and more!
Now after you watched the video, You have to know that it's not confirmed yet that iOS 4.1 will be released tomorrow, but also remember that Steve Jobs announced with iOS 4.1 coming Next Week from last Wedensday, The official software update page was scheduled to be launched September 8th but pulled back to Coming Soon.
Jailbroken? Think again!
Well, If your device is jailbroken and unlock on iOS 4.0.1 / 4.0, then you have to think again and again! If you upgraded to iOS 4.1 you will totally lose this jailbreak and unlock until Comex released his userland jailbreak for iOS 4.1.
Also iOS 4.1 updates the baseband, and remember that the baseband can't be downgraded for all devices except iPhone 4 as Notcom protected iPhone 4's baseband
Now, all what you can do is to Save SHSH blobs of iOS 4.0.2 by following the guide posted here and don't upgrade except you don't need the unlock provided but Ultrasn0w or you are on iPhone 4.
Update to iTunes 10 NOW
To be able to get all the features of iOS 4.1, you will need iTunes 10 to use Ping social networking features which was announced last week by Jobs in his annual musical event.
Check your Device Compatibility
iPhone 4 gets all the features and full update. iPhone 3GS and iPod touch 3G can upgrade to iOS 4.1 without HDR Photos and HD Youtube uploads. But Will Scratch made HDR Photos possible for jailbroken iPhone 3GS and iPhone 3G (more details posted here)
iPhone 3G and iPod touch 2G only gets bug fixes and better performance for iPhone 3G (details posted here), No Game Center, No HDR Photos, No HD video uploads.
Backup Your Data
Once you have installed iTunes 10 on your Computer, connect you device (iPhone / iPod) and sync it even it's jailbroken (it's safe). After synchronization completed, Back up your data to your Windows/Mac library by right clicking on the iPhone icon and click "Backup". Backing up your data saves anything on your device including contacts, photos, videos, purchased apps and everything.