you need a modded version, done by a gut on the ondabbs called Tomac, he was also the developer of the game emulator on the v2000se player
if you bob over to
MP4 Nation Forums • Index page and go to the onda section its all on there
users that have done this and applied this mod seem to be well impressed with the improvements over the standard 747 firmware
BTW i am maderin1 on that site
or see here
MP4 Nation Forums • View topic - Edited: tomac file manager emulator on 747 works