The official R4DS comes with a CD with everything you need on it. Unofficial ones do not come with a CD, so you will need to find out which website you need to go to for the downloads. You can check the website from any packaging your R4DS came with.
huh? the R4DS is for the Nintendo DS.
no
The related link is how the White R4 looks like, the image being from the R4DS website. The black R4DS has only the colour changed, with no extra letters or pictures on the label. Also, the newest versions of the R4DS firmware won't work on fake versions of the R4.
It will work if you decrypt the file, but it is easier to use the R4DS cheat editor: http://www.r4ds.cn/download/Cheat_code_editor.html
The R4DS does not support any microSD cards over 2gb. So, sorry, you bought that for nothing. And there is absolutely no way to get it to work so don't bother.
no, but there is no need to, the R4DS has a built in Action Replay.
if the website is listed on the official R4DS webpage at r4ds.cn/buy-r4.html then you can trust that it will be the original R4. unless that website also sells clone cards, make sure the name and image match (without any extra words or symbols such as R4Pro or R4Ultra)
== First you need to install firmware onto your MicroSD Card. If you have the official R4DS, this comes in a CD. If not, you will need to go to the manufacturer's website to download their custom firmware. Usually you just copy a "_DS_MENU.dat" file and a folder to the root of your MicroSD Card.
No it is illegal
Yes the r4ds boots up game boy games into ds mode.
LMP-ng is a music player that looks like the iPod: http://www.cecm.usp.br/~lucas/lmp-ng/