Apple just released iOS 4.0.1 software update for the iPhone and one of the main feature is the improved formula to determine how many signals to display. iOS 4.0.1 update is compatible with iPhone 3G, 3GS, and iPhone 4. iPhone 3G owners should be warned that just like iOS 4 this updated version will not make your iPhone any faster.
The software is available via iTunes, you can also download the IPSW file with the link below.
To use the IPSW file, you need to put back up your iPhone first then put it to DFU mode by pressing home and power button until it restarts. You then need to connect your iPhone 4 and you will be asked to restore it. Press “shift” and click restore then browse to the downloaded iOS 4.0.1 IPSW file.
Update: You can also download iOS 4.0.1 ipsw files for iPhone 3G and 3GS with the link below.
Make sure to download the ipsw file that corresponds to your iPhone.
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