iPhone Firmware 1.1.3 Problems and Fixes

iPhone Firmware 1.1.3 Problems:
1. Problems: iPhone Firmware 1.1.3 fails to apply: Update to iTunes 7.6.
2. Problems: Sound missing.
3. Problems: Bluetooth device compatibility.
4. Problems: Mail problems.
5. Problems: iPhone Wi-Fi/EDGE problems
iPhone Firmware 1.1.3 Fixes:
Troubleshooting and "Step by Step" Tips to Fix all the problems here > iPhone Firmware 1.1.3 Problems and Fixes