Need Help with R4i Ultra

I recently got a R4i Ultra and I was wondering if there is any firmware that Pokemon Black/White U roms would work on?I tried both Akaio and Ysmenu and it didn't work.With the Akaio 1.8.1 it loads the save file but then turns to a black screen.Website:www.r4ultra.com/

the best firmware is akaio 1.8.1 but you will have to use the patched version of pokemon for it to work

do you know where i can get a patched version so black or white u can work on akaio???