Need help with DSTTi

I just got my DSTTi and I've verified that its real through the check program. However, the ROMS that I've placed inside do not work most of the time. If some do, some others wouldn't. I've tried various microsd cards too including originals.These are what I did. I reformatted the card using the SD Formatter and-installed 1.17 then v6.96 (Mario Kart and Super Mario Bros works but Golden Sun and Pokemon Black doesn't)
-installed 1.18 then v6.96 (Only Pokemon Black works but everytime i reboot, the save file is deleted)
-installed v6.96 (only Super Mario Bros work)
-installed 1.18 (Only Super Mario Bros and Mario Kart worked)What am I doing wrong? need help greatly! thanks!

Did you install the right firmware for your card?
As in, YSMenu but using the right folder? Because it's quite possible you could've used the wrong folder and that's why it doesn't work.

I've followed the guide online from another website.I've been using the dstti ysmenu folders so it should be right

RGF Multicart Update Compatibility Listhttp://forum.romulation.net/index.php?topic=43121.0Natively Working (Replaces ORIGINAL Firmware) :
DSTTi Gold - http://www.ndstti.cn/ -> Just copy files (Use DSTT_DSTTi TTMenu or DSTT_DSTTi YSMenu folder)
DSTT-Advance - http://www.dstt-adv.com/ -> Just copy files (Use DSTT_DSTTi TTMenu or DSTT_DSTTi YSMenu folder)Unless it's just a DSTTi alone ?