Are you bored with the standard PS3 bootup sound? Or would like the old one back [pre-3.00fw]
Well now you can with this tutorial.
And on with the tutorial.
You'll need to install
Comgenie's File Manager / FTP Client
XVid4PSP (on the pc obvs)
Boot up dev_blind when using FTP it will show dev_blind in FTP's menu, on the PS3 & scroll down to "/vsh/resource/
untill you see two files one named: coldboot_multi.ac3 and another called coldboot_stereo.ac3. These two files are what you will need to change, in order to get a custom bootup sound. Dont to anything yet...
Grab any mp3 you want, be it from a game or whatever it doesnt matter. Load up XivD4PSP.
You will need to trim it to around 8 seconds as it will get cut off. [like in the video] You'll see Set Start/Set End and apply trim.
Audio encoding AC3 640K
Once that is done, and you are happy with your bootup sound, rename it coldboot_multi.ac3 and then the same file as coldboot_stereo.ac3. Save it, by doing Ctrl+S.
Boot up FTP & copy over your newly created files
Power off your PS3, with or without your JB, and listen to your new Boot Sound.