I need help to use my R4i flashcard

If your DSi already has a CFW, you can use TwilightMenu++ to load NDS from SD card.

Actually, installing Twilight Menu++ is part of the process to hack the DSi, at least it is on THE DSi Guide:

Code:

https://dsi.cfw.guide/

I advice you against trying to follow video guides as they are most of the time non updated.

 

Check out "Unofficial R4i Ndsill Kernel 1.0" in Home > Downloads > Nintendo DS > Flashcart Files > R4 series

 

Some flashcards/kernels are not very compatible with certain games. Like Bejeweled 3 and some others.

Have you checked your microSD card is not failing?

 

You need to test it using a program like H2testw. But be warned that all the contents will get erased, so you better back them up first.

Also, download it only from the official site. (heise[dot]de)

 

So then, most probably is an issue with the kernel you're using.

Have you tried using Wood R4?

Check here:

Code:

https://gbatemp.net/threads/wood-r4-nds-files-to-load-wood-r4-ck3.269241/

And here:

Code:

https://gbatemp.net/threads/wood-firmwares-v1-62-update.352802/

There are download links available there. But I suggest you to read and understand how to make it work properly (if possible) on your R4 flashcard.

 

Tried loading Wood as a NDS too? that's the most compatible version.

 

If the problem is only with certain games it may be a problem with the game file itself. In order to test out a rom I use RetroArch on my PC. It can recognize known working roms when using the "Import Content" feature. Though trimmed NDS files aren't recognized this way. Even if it doesn't list automatically you can still try running it to get a second opinion.