i've noticed a lot of people have gotten the "no applications designed for your device" on the 8100 pearl when trying to put roms and such on the device, and i spent a good 15 hours trying various things...javaloader...putting the jar file directly on the media card/device memory. (even though javaloader never worked for me >:l) and i finally figured it out, and it worked for me on 4.5.xx OS when i had the alx files and cod in the same directory, then edited the .cod file and changed the information to match the .alx file then just uploaded it with the app loader. i've done this with pokemon yellow and red and i'm going to try it with a few more, sorry if this is old news i just haven't seen this covered.