It was great experiance for me to install Windows Mobile 6.5 on my Asus P320, To make it easy i am sharing the step with you all.
First of all Download the WM 6.5 ROM formhttp://forum.xda-developers.com/showthread.php?p=3542813
1. Down Load and UNZIP P320 NEW ROM.
2. Directly copy folder “(Folder u have got by unzipping” into the root directory of your micorSD card.
3. Advised to Backup all your Contacts & Messages Using any backup application.
4. Keep the battery in charge during upgrade procedure.
5. Press and hold Volume Down key (on left side, shown below) and poke reset button (on bottom side), the system will boot up.
6. Then release reset button and continue to hold Volume Down key until the screen shows writing percentage.
Enjoy the new look of you Windows Mobile 6.5 :)
Sometime it will show TTFT USB, it means you have not placed the Flash file inside the Root Folder If it will show Plug the USB & dont plug.What u have to do is place the FLASH FILE inside the correct folder , as i said in above also.
7. The system will start installation automatically. It will re-start when system installation is completed.
8. System will start upgrading after touch panel calibration and date/time setting.
Note:You wont be able to acess the Start Menu at first Startup, so kindly copy all the files whic are under "Copy all the files which are inside this folder to windows of ur ASUS P30 Phone" folder.
to Windows folder of P320
IF NOT ABLE TO SEE WINDOWS FOLDER IN YOUR PC, FOLLOW THE STEPS.
Go to Control Panel>> Open Folders Tap, Click on View, Uncheck "Hide protected windows operating system files" .


