Duda Con este CUstomize_upgrade

[soad16]

hola comunidad una duda para que sirve este customize_upgrade? venia en unos acusticos pero queria saber para que sirve aqui se los pongo

<?xml version="1.0" encoding="ISO-8859-1"?>

<customization>

<registry>

<reg-ops>
<!-- Clean up keys -->
<reg-op op="delete" reg-path="/apps/music-application"/>
</reg-ops>

<music-application>
<settings reg-path="/apps/music-application">

<!-- The version of this key -->
<version>1.0</version>

<!-- Controls the selected equalizer curve (normal, base, etc) -->
<eq-curve>4</eq-curve>
<!-- Controls equalizer preset or user defined selection -->
<eq-preset-enabled>1</eq-preset-enabled>

<!-- Controls equalizer band 63 -->
<eq-band-63>14</eq-band-63>
<!-- Controls equalizer band 250 -->
<eq-band-250>-6</eq-band-250>
<!-- Controls equalizer band 1000 -->
<eq-band-1000>-7</eq-band-1000>
<!-- Controls equalizer band 4000 -->
<eq-band-4000>-7</eq-band-4000>
<!-- Controls equalizer band 16000 -->
<eq-band-16000>-2</eq-band-16000>

<!-- Controls if music player should listen to shake it events -->
<shake-it-enabled>0</shake-it-enabled>
</settings>
</music-application>

</registry>

</customization>

espero su ayuda

[carlosirai]

Modifica el ecualizador y desabilita el shake control