You're very restricted in what you can do.
Older burners generally don't get firmware updates very often so cannot support the latest media that arrives on the market.
Cross flashing is unlikely to help as the 2510 also suffers the same problem.
You'd probably be OK with most of the 8x media around & there is plenty of it but as far as 16x media goes you'll struggle to find compatible brands.
I'll re-install my 2500 later today & see what of my media is compatible with it.