currently,almost all flash kit can work on 7.1.0-14E ,if all you want is playing nds games or homebrew,you can buy r4i gold 3ds like this one : http://www.modchipwarehouse.com/r4i-gol...s-lite-p-1.html ,this is the best r4 card as well as most famous card in the market.
now the Ver. 7.1.0-14E is kind of low version among the Nintendo firmware , however all ds flashcart can work directly on it , i recommend you the supercard dstwo , it is support gba/snes/ds games and multi-media funtion ,it si the best flaschart among flashcart family
i have supercard dstwo , and i always recommend my friend to get this supercard from the official site : http://www.usar4.com/dstwo-supercard-ds...s-lite-p-2.html
Hi, many regular cards can directly support the latest firmware v7.2.0-17 now,so they also support your v7.1.0-14, you can choose r4i gold rts cards, r4i sdhc rts 3ds and ace 3ds plus ...,the r4i gold rts card is the most popular card now in the market, it can directly support the latest 3ds firmware and update frequently, and the r4i sdhc rts card and the ace 3ds plus card also update frequently,and they are much more cheaper, if you mind money they also will be your best choice, recommend you view here gamedepot4u.com/nintendo-3ds-ds-dsi-3ds-flashcard-c-65_78.html
R4i gold and dstwo are both great, r4i gold are famous, popular,uses famous wood firmware,with a quicker updating, can support almost all latest nds games; dstwo has many powerful features and can also play gba games, so more expensive, if you are fun without this, then r4i gold is your best choice. And it's very easy to use the card, you just need to download the fimware and put it into you card. I've tried out the R4i Gold 3DS and the Supercard DSTwo. Got my cards from http://www.r4depot.com/8-r4i-gold-3ds-flashcart-for-ds-lite-dsi-3ds-3ds-xl-2ds.html they also have many useful tutorial about the card, so you can feel easy to use them. I'm very satisfied with their customer service.