With the new iOS 4.1 firmware around the corner we would like to warn you that  iOS 4.1 firmware comes with many updates and an updated baseband. As long as you have saved your SHSH blobs for iOS 4.0.1 or iOS 4.0.2 then you are safe. You should know that downgrading will not downgrade your baseband.




Please do not update, if you want to jailbreak or unlock your iDevice or you have not saved your SHSH blobs.
However, iPhone 3G owners can revert their basebands due to an exploit in very early bootloaders.

If you have downloaded  iOS 4.1, please share your experience with us in the comments section below.