You can change the startup sound during boot:
The startup sound MUST be a WAV file, 16 bit, stereo 44100 Hz.
Create it on your PC, call the file poweron.snd (so no .wav extension !!!).
Then:
> adb push geluid.wav /sdcard
> adb shell
$ su
# mount -o remount,rw /dev/block/stl6 /system
# cd /etc
# /system/bin/busybox cp poweron.snd poweron.snd.orig
# /system/bin/busybox cp /sdcard/geluid.wav poweron.snd
Reboot the phone to test the new sound.
The startup sound MUST be a WAV file, 16 bit, stereo 44100 Hz.
Create it on your PC, call the file poweron.snd (so no .wav extension !!!).
Then:
> adb push geluid.wav /sdcard
> adb shell
$ su
# mount -o remount,rw /dev/block/stl6 /system
# cd /etc
# /system/bin/busybox cp poweron.snd poweron.snd.orig
# /system/bin/busybox cp /sdcard/geluid.wav poweron.snd
Reboot the phone to test the new sound.