But unfortunately TinyUmbreall 4.1.3 only able to be used on iPhone 4. So, it won't do you no help to keep your baseband, if you're using the iPhone 3G or the 3GS.
Here are the wisdom you need to stick with before taking the further actions:
- Baseband Protection - Updating to 4.1 using TinyUmbrella will protect your baseband from update. THIS ONLY APPLIES TO IPHONE 4!!!!! If you have a 3G or 3GS and you update to 4.1 your baseband will likely be updated.
- SHSH Retrieval from Cydia - If you don't have your SHSH locally, TinyUmbrella will request them from Cydia on-demand; allowing the restore to continue
- Automatically point hosts to Cydia - Once you close TinyUmbrella, it points your hosts file to Cydia (for further baseband protection and update/restores without TinyUmbrella)
- TinyUmbrella README
- TinyUmbrella [OSX]
- TinyUmbrella [WIN]
- TinyUmbrella [LINUX]
- TinyUmbrella [Core Source]
You can Update iPhone 4 on iOS 4.1 But Keep The 1.59.00 Baseband using TinyUmbrella.
Update: the latest version has been released, which is TinyUmbrella 4.1.11