Perhaps the biggest and most persistent issue with iPhone firmware/software 1.1.3 is a newfound incompatibility with specific Bluetooth devices. We've noted a number of potential fixes for this issue that have been met with varying success. Now a site called "Oh!Pedia" has a fix that can be described as: generally successful, risky and requiring technical dexterity. It involves copying the Bluetooth framework from iPhone software/firmware 1.1.2 to an iPhone running 1.1.3. By doing so, you'll likely regain access to your Bluetooth devices (assuming they were working under 1.1.2), but you risk system instability and other issues.The process requires a jailbroken iPhone and is rather involved.