No, you cannot. Even if you copy games purchased from a different DSi, it will not work. This is because games will only be recognized by the DSi if your system purchased those games (or you had a system transfer). It is recommended to not move files on the SD card around or your DSi may not be able to locate the games and will not work.
Yes I think so.
no
The DSi can't execute code on the SD card, all it can do is store pictures on it, or play music. There's no way to play a homebrew game off the SD card, the DSi simply wasn't made with the means to do so.
no you can't play dsi games in ds but you can play ds games in dsi.
Play Gameboy Advance Games (GBA ROMs) on Nintendo DSi with the help of a DS iPlayer card and DSi-GBA emulator. Download GBA games to microSD card
It doesn't 'need' a memory card (Memory Stick is a Sony card, the DSi uses SD cards), you can play games without using one. A memory card would be for storing lots of photographs, MP3s or DSi store games.
There are only a tiny handful of 'DSi games', games which specifically need the DSi's camera to play. Most are even DSiware. So technically all DS game cards will work just fine on a DSi, there's no need to do anything to get them working.
The DSi can play DS and DSi games, as well as DSi ware games. It cannot play GameBoy games or 3DS games.
Sadly, no. DSi games cannot be played on the DS or the DSL. The DSi features games that are specifically formatted for it,and some can be downloaded from the DSiShop (online) therefore, the DSi can play all the DS and DSL games, but its games cannot be played on the older versions.
R4i card is a slot-1 flashcard, it can only play DS and DSi games. M3i Zero is a multi-media flashcard, it not only can play DSi games, but also powerfull in multi-media play. M3i zero card can also play GBA games.
Yes, you can play DS lite games on the DSi as well as the DSi XL
You can buy games from the built-in DSi Shop using Nintendo Points. You need a compatible Wi-Fi Network, though.
You don't need any additional software, just purchase and download games from the DSi shop.