Revolution for DS
The Revolution for DS (most known as R4DS or simply R4) is a series of flash cartridges for the Nintendo DS handheld system. It allows ROMs to be booted on the Nintendo DS handheld system from a microSD card. This allows the user to run homebrew applications, to store multiple games on a single memory card for convenience, to play games that have been backed up by the user, and most commonly, to play unlicensed games. It uses a microSD card for its firmware and games. The R4 flashcard's original developer stopped producing the R4 Card that plays ROMs for the Nintendo DS, however, there are a new line of R4 clones that have taken its place, notably the R4 3DS, R4 Gold, R4 DSi and R4 NES, which are used to play ROMs from various Nintendo platforms such as the Nintendo 3DS, Nintendo DSi, Nintendo DSi XL and Nintendo Entertainment System.
There are original R4 cards created for the Nintendo DS[when?] and has been discontinued. The original Revolution for DS card is no longer available, but there are other cards that are of similar quality made by other entities that have adapted the name. The R4 3DS, however, is a genuine card, developed and manufactured by the same team that designed the original R4 DS cards.
The R4 3DS or R4i SDHC 3DS is a Revolution card that is compatible with the Nintendo 3DS, Nintendo 2DS and Nintendo 3DS XL handheld consoles from Nintendo. Its wide compatibility range has made it one of the most popular flashcards available. The R4 3DS flash has an extra ability that allows it update via Wi-Fi.
In 2010, the company Playables Limited, importers of R4 flashcards, was ruled against by the London High Court. The ruling outlawed any sales, importation, or advertising of the R4 flashcards. The defence of Playables Limited claimed that the R4 flashcards were legal because it uses a homebrew application. However, bypassing Nintendo’s security system is against the law in the United Kingdom. After the news broke, Nintendo released on a statement saying that they do support game developers that create their own applications legitimately. 100,000 copying devices including R4s were seized in 2009. Nintendo claimed that the cards were not only seized for the benefit of their own company, but the benefit for over 1400 video game companies that depend on the sales of their games.
In October 2011, the R4 cards were banned in France. An official release by the Paris court of appeals ruled against five R4 sellers and distributors. The sellers and distributors were fined over €460,000, and some were sentenced to jail. Stephan Bole, the managing director of Nintendo France released a statement saying “Nintendo supported this criminal action not only for the company’s sake, but for the interests of its game developer partners who spend time and money legitimately developing software for Nintendo’s game platforms, and customers who expect the highest standards and integrity from products bearing the Nintendo name.” 
In 2009, the government of Japan outlawed the sales of the R4 flashcard. In 2012, the Japanese Minstery of Economy, Trade, and Industry revealed that the importing of R4 cards, and similar devices, is now punishable by law. In 2013, Nintendo won a court case against two R4 card distributors in Japan. The Tokyo district court ruled that the sellers of the R4 cards owed Nintendo and 49 other video game developers ¥95,625,000.
In 2009, Nintendo lost a lawsuit against a seller of flashcarts, however Nintendo won the second and final instance. Since December 2014, flashcarts are officially illegal due to Germany's copyright law. The seller and distributor of the R4 flashcarts was fined over €1 million.
- "R4 3DS Website".
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