As expected, Apple has released a minor update iOS 4.01 to improve the display of signal strength on the iPhone devices. The update also includes some bug fixes and improvements.
iOS 4.01 is available for iPhone 3GS and iPhone 4 users. The iPhone 3G users can also download this firmware, but it will not get all the features like Multitasking and Wallpapers.

If you want to try iOS 4.01 on older devices, do check these tricks to improve the performance of the phone. All users can download the update from iTunes 9.2. Connect your iPhone to the iTunes to download and install the iOS 4.01 firmware. Direct download links are given below.
Download iOS 4.01 Firmware
Apple is going to address a special iPhone 4 conference today to give more information on the recent issues. So stay tuned for more news and updates.
