DSTT card - Ninetndo dsi

I've got a DSTT for NDS/NDSL cart that I used on my Nintendo ds lite. Now I got a Nintendo dsi that does not recognise the flash cart. I went through your tutorials and few forum topics that seemed can resolve my problem but so far I had no luck. I am rather ignorant when it comes to the technological terms so forgive me for starting perhaps a topic already dealt with . . .Thanks

DSTT unfortunately, so I need to get a DSTTi cart and copy all the games over?
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Regarding the version I do not know. Where do I look for the version info?

Thank you, thank you, thank you

By the way I can still use my old micro sd card? It got DSTT menus etc. on it. Those came with the card and I will need the starting programs? Can I download them? Where? Thank you again

Thank you again

And another question, could I use DSTT card on 3DS? I can use it with some additional updates or another card is needed? Thank you

I'm afraid not. The DSTT will only work on NDS or NDSLite. As a general rule, flashcards compatible with DSi/XL often have an 'i' in their name eg: aceKard2i, R4i. Likewise the 3DS compatible cards often have '3D' in the name although this is not always the case
A good guide is right here. Take a look. :)

Ethan ArmNO, DStt can only work on DS or DSi,

Again, DSTT works on DS or DSLite only, not DSi.