So is there anything i can use to modify this?
I'm closing this thread because you have been pointed to the relevant pages on New Ports, and this is really not a "Feature Idea".
IF there were a firmware replacement (for that is what Rockbox is, not a modification but rather a replacement) for your MP3 player it would most likely be Rockbox, or a fork thereof. The world of alternative DAP firmwares is rather small, and Rockbox's "gravitational pull" is strong enough that most everybody ends up here.