Guide to upgrade K750i firmware

I've successfully updated K750i firmware today. Its pretty simple. All you need is a
1. DCU-60 USB cable
2. Internet connection
3. Macromedia Flash Player installed on Internet Explorer.

Next, download the software:
1. Open Sony Ericsson D750/K750 USB drivers. Download 750_USB_Drivers.zip
2. Visit Sony Ericsson Update Service. Download UpdateService_Inst_x.x.xx.xx.exe
3. Save all the download files into a folder. Remember where you save them.
4. Extract and install both files you download earlier.
5. Restart the computer.
6. Launch Update Service icon on the desktop.
7. Follow the instruction. (turn off phone, remove sim card, and etc)
8. Be patient. It takes about 15-30mins during firmware upgrade
9. Congratulations! You have the latest firmware.