It is possible to install sis packages using the runonphone tool, but that requires App TRK to be running on the phone. It is also possible by putting the package on the memory card, disconnect the phone, and then install it from the menu. Both ways are suboptimal.

It should be possible to install the files directly, just like on Windows. This will require talking the same protocol that PC Suite on Windows does.

Note that Nokia / Sony Ericsson / Samsung Symbian phones may have slightly different protocols.