In my Sony Ericsson K300i, I can upload games and applications using ObexFTP uploading JAR files w/o select a parent folder. Ex:
obexftp -t /dev/ttyUSB0 -p mygame.jar
Note that I do not specify a folder (using -c flag). This makes the cell phone asks me whether this file represent an application or a game.
The way that ObexFTP front-end is implemented I cannot transfer games and applications to my K300i (because I cannot send a file w/o select a folder in the tree, which will receive the file).