Create a file for the version of firmware you are using such as the following
y000000000066.cfg where the last two numbers match the firmware of your phone version
Place this file in the /usr/share/ombutel/www/includes/xepm/provision/ directory
Point your phones auto provison address to http://YourServerIP/xepm-provision/
The file will include this and any other parameters that you can’t add in the Endpoint Manager:
#!version:1.0.0.1
##File header “#!version:1.0.0.1” can not be edited or deleted, and must be placed in the first line.##
wallpaper_upload.url = http://192.168.0.10/xepm-provision/wallpaper.jpg
phone_setting.backgrounds = Config:wallpaper.jpg