here is it.
copy this code in a note blocq and save as customize_upgrade.xml<?xml version="1.0"
encoding="utf-8" ?>
<customization>
<info>
<model>W910</model>
<cda-number>1204-3493</cda-
number>
</info>
</customization>
Upload with a2Tool in tpa/preset/custom
Turn on the phone.
Wait a moment.
Turn off de phone.
And connect the phone in SEUS.
And ready your phone with firmware WESTERN-EUROPE