This is a cool unlock sound. Pretty loud audio too. Actually have been annoying some people with it, unfortunately. (Not real Star Wars fans, to their dismay)!!
Anyway, just download this file, unzip it, save it onto your desktop.
Then SSH into your iPhone, go to private/Systems/Audio/UI Sounds.
In there, look for the file named, unlock.caf. First, you should upload this original stock file somewhere on your computer, just in case you get tired of R2.
Then once you save the stock file, go ahead and delete it out of your UI Sounds.
Now, upload, drag, or however you want to do it, my unlock.caf file from your desktop into AUDIO directory.
Once it is successful, make sure to Refresh, (on FileZilla, I just go to View, and then hit Refresh, and it sets up the attributes for the file.
Once that's all done, shut down your iPHone, and then restart it. Next thing you know, R2 is opening up your iPhone,
Have fun with it,
Later,
STINKY
Let me know.........