[UPDATE] PSP Wave Changer
I created this homebrew app so i could flash my own waves to my psp.
I dont know whether there are other applications like this but i would still much rather use my own as i know there is nothing which harms my psp.
It is fairly easy to use and it shouldnt brick your psp unless the file you select to copy is not a system_plugin_bg.rco file.
PSP Wave Changer 1.4
I have added my own themes to this download. If you dont want them then just delete them.
If anyone does use this then use it at your own risk and make sure you know how to change the system_plugin_bg.rco file in flash0 using the recovery menu.
It is wise to only use this application with Custom Firmware as there is a way to restore any corrupt files using the recovery menu where-as 1.5 fw does not allow you to do this causing your PSP to become bricked.
EDIT: The link above has been updated with the new download link.
The bug in the previous version is now fixed.
Also i have made the application look better by adding a background image, etc.
EDIT: Another update. v1.2. Allows unlimited amount of files to be loaded instead of the limited 20 which was in previous versions. Link has been updated to newest version.
EDIT: Probably my last update. v1.3. Only a few GUI additions. Not a required download. Link has been updated to newest version.
EDIT: I checked the upload that i put on megauploads and it looks like i hadnt included all the files. I have now added all the files and have added a check to see if the battery is lower than 5% and if it is, it wont change the wave. I have updated the link and checked it this time.