Hi All,
Got It.

I got to know why the customize_upgrade.xml was being deleted on first boot after copying.
The reason is that " the cda version, cda revision , phone model (including the last charactor w760a, w760i) that is in the customize_upgrade.xml should match with the corresponding fields in the customize.xml already available in the phone.


1. Check the fields in the customize.xml by reading using the filesystem in a2uploader and generate the xml using A1 CDA file generator. If still there are any differences, you can edit the generated xml file and then save

2. Copy the generated/modified custimize_upgrade.xml file using a2uploader to the tpa/presents/custom directory on the phone

3. Then shut down the file system on a2uploader, power on the phone and boot till the main menu.

4. Power off, remove and re-insert the battery, start SEUS and follow the instructions.

Thanks every one

Regards
Narender