R4 Ultra Help

I know the R4 Ultra is old and all, but I cannot afford a new one. I have tried many suggestions even from here on the forum, but I cannot seem to get it to work with the newer roms. Any detailed solutions would be appreciated.

there may not be any solutions. If your cart is no longer being updated and can't run any third party firmware, your only options are buy a new cart or do without.

This is the solutions I've used so far:
- Download YSMenu from here: http://www.r4wood.com/Kernel/a/ysmenu.rar, then extract it.
- Replace RetroGameFan's newest DAT file (extinfo.dat, savlib.dat, infolib.dat, usrcheat.dat) from http://forum.romulation.net/index.php?topic=43121.0 to YSMenu folder of the extracted package.
- Copy them to your MicroSD card.