The startup and shutdown animation on the P800 can be cutomized by having 240x320 resolution .mp4 files.

Use the file manager program and create a folder called sysdata in drive c: (ie. c:\sysdata) and copy the files in that folder called startup.mp4 and/or shutdown.mp4 respectively. The same rules need to be followed as with creating any other .mp4 file for the P800.

Warning: If the .mp4 file is not correctly formatted or uses a codec or codec setting that is different from the ones used in the startup/shutdown .mp4s, the phone will hang and you won't be able to use the phone.