Ewin was done for flashcart previously and then downhill. Ewin developed the corresponding NDS GBA ,Ewin2 which had got recongnized by NDS games player for its lower prices and better conpatibility. Ewin2 is external storage media flashcart, can be divided into SD, Mini SD, Micro SD (TF) 3 versions according to the use of different memory cards. In fact, Micro SD (TF) is specifically designed for the NDSL, the shell is different from the other two versions, can not be inserted to use NDS. In Ewin2 packaging, no read card or lines, you need to purchase additional.

Benefits
1, The cheap price cheap, the price of three versions were 139,169,199;
2, housing production is extremely delicate, not rough;
3, For NDS game support is better, good compatibility;
4, Conversion software Ewintool intuitive to use, supports Clean ROM;
5, Use after refresh, the more energy-saving;
6, Support the Chinese ROM name;
7, Spring card connector, memory card plug convenient;
8,1.90 has supported kernel versions of Moonshell, all kinds of home-made software and various types of simulator;
9, Micro SD (TF) version of the plug NDSL slightly prominent a small part of the problem-solving (TF Plus version of the solution);
10, Conversion software 1.31 (20,070,217) began BETA support for soft-reset function;
Defect
1, Does not support GBA game;
2, Does not support long file names;
3, Support for home-made software, simulators and so on but very limited;
4, Official support is not very good, the official forum for answers to relatively slow.
【Update】

1.96.2 Version
1, Re-handling code written filing, archiving directly on the SD card to access, the complete elimination of the extension because the battery, resulting in instability in the work of SRAM, while the resulting archive file missing;
2, Switch the game, no longer need to archive the backup process, greatly reducing the game’s start time.
1.92.6 Version
1, To amend the clock error.

1.92 Version
1, A new graphical user interface;
2, Full support for touch;
3, Automatic intelligent loading process, faster;
4, Adjusted to help the key bits [SELECT], the original file delete function temporarily canceled;
5, Increasing [Y] key to force-start function (requires mandatory to enter the game, forget the check if the conversion patch, you can press Y button to start);
6, To enhance the battery usage instructions;
7, Optimized loading speed;
8, To improve compatibility with SD cards.
1.91.7 Version
1, Run “Pokemon Pearl Diamond”

1.91.2 Version
1, Rom compatibility enhancement;
2, Modify the file name of the process of wrapping an error.

1.91.1 Version
1, modify the startup interface display bug;
2, the file name support enhanced.

1.90.0 Version
1, Font loaded by the kernel, eliminating the need font directory, faster;
2, Modify the part of the error.

1.81 Version
1, SD / miniSD / microSD three in one version, to avoid the users to update confusion;
2, Support for homebrew;
3, Moonshell with the various types of simulators swoop.

1.80R Version
1, With the Ewin Tools V1.1 to solve fragmentation problems;
2, start to solve white screen problem and 0493;
3, Speed up the font library loading speed;
4, Increasing support for Chinese Traditional.
1.71 Version
1, System updates keys into L + R + UP.
2, Modify the kernel updates to Chinese display an error.
3, Modify the part of the long file names can not display bug.
1.70R1 Version
1, Repair long file names and BUG could not be activated.
2, Repair ICON menu can not support the IDS errors.
3,Increasing support hidden attribute, do not want to display directories and files can be set as hidden.
4, Update is completed, it will automatically delete EWIN_UPDATE.DAT file.
1.69R1 Version
1, Increasing multi-national language support.
2, Increasing function of the firmware first aid

Many players will wonder how the assembled  memory stick in the market, and it can be used or not, or is it worth to buy. Now answer this questions for everyone.

Q: How the assembled memory stick come out?
A: This is necessary begin with the encryption of memory stick. Memory Stick, is developed by Sony, and actually different with Flash Memory Card, its Memory Stick standard is non-public, and there is no standardization for it. It uses Sony’s own appearance, protocol, physical format, and copyright protection technology, you have to negotiate and conclude licensing if you want to use its specifications. It also adopts Sony’s MagicGate patented technology, so it has not been cracked and pirated. But now, the underlying technology has been cracked .

Q: Can I use assembled  Memory Stick ? What’s the differences between the original and assembled memory stick?
A: In theory, the assembled is actually the equivalent of piracy Memory Stick. There is no distinction between use. But, after all, Sony products will be produced through rigorous testing, and it is very strict whether it is working and so forth. Of course, the original will win in the quality.

Q: Will the assembled memory stick damage the machine?
A: The probability is a very low, but for now, many players are using the assembled Memory Stick, the possibility of damaging the hardware still exist. You must pay attention to when using.

Q: What are you need to pay attention to when using the Memory Stick?
A: The use of digital devices have a temperature and humidity limits. Memory Stick is the same. You’d better not read memory stick in very low temperature and high temperature. Also not to recommend to  read and write operations in some places where are in the large temperature difference.

Please check what version of your own R4. There are a great many versions of R4 clones，such as：R4III, R4 SDHC, R4 Advance，R4 Pro etc.

You can identify the right version by its logo outside the package, and on the box there is the official website address, please go there and download the latest kernel.

 Once you downloaded the kernel, please unzip the files to a folder, something like follows will be listed:

_system_ (this is a folder full of files)
moonshl (this is a folder full of files)
_DS_MENU.dat (this is the system menu data file)
_DS_MSHL.nds (this is the moonshell/multi media player loader)

After that, please copy them   into your own SD card or SDHC card.

Now put the memory card into your R4 card and start the ds up or power it on if you have done it right the R4 should boot up and show you a menu with 3 icons GAME / MULTIMEDIA / SLOT 2 choose game and then press a on the folder called GAMES choose your game you wish to play and press A on the ds to load it. 

If you did as the above, but the cart still not working, please check:

is the mem card formatted FAT or FAT 32 not that it would make a great difference its worth a try …

and have you tried using normal Micro SD none sdhc card or can you borrow one? to eliminate a bad sd card 

finally have you tried other versions of the R4 loader such as the official one: the original 1.18 kernel, or more kernels of other flashcarts.

Note: Original R4 DS is only for 2G SD card.  If you are certain that you have the correct firmware but still stuck on loading screen? First, format your SD Card, Second redownload the correct firmware.

We know that there are various flashcarts with different features on the market. Most users find it’s hard to select a product. The frequently asked question is which one is better. Here we make a brief introduction of the most popular flashcarts for you.

1. Once R4 ds was a leader among all kinds of flashcarts. As a complete slot-1 solution, it has easiest working method, no need to use any additional components or deal with any messy software:just format the cart and directly drag and drop all files into the TF card. It supports roms, multimedia files, and homebrew games of any size. R4 was highly recommended by its easy-to-use, and excellent performance.

Note: R4 DS is an out-dated flash cart and the production has been ceased. Among numerous R4 clones on the market, R4 SDHC is welcome by most users.Not mention its hardware or its performance, R4 SDHC is a brilliant flash kit.

2. DSTT comes up in a ripe period of slot-1 technology, and has a high cost performance in the market. This is a full-featured product. DSTT supports clean rom, no convert;100% supports SDHC and standard TF card; automatically detect and generate save type; supports Moonshell and homebrew. DLDI auto-patching. Besides, it has user friendly skinnable interface, using touchscreen or button operation.

DSTT does well in gameplay, homebrew support and additional features. Besides,its cheap price and great build quality make DSTT become hot cakes. And since NDSi came out, DSTTi also released its new product to meet the demand of market.

3. M3DSReal is an amazing flash kit，perfectly supporting homebrew games, watch movies and listen music. M3 DSReal allows for high capacity memory cards (up to 32 GB at present), so that users can save all kinds of games as they like. Meanwhile, they can download“Media-Ex” application + “Moonshell” media player for enjoying full-featured visiual and audio entertainment. Furthermore, M3 DS Real .breaks the conventional thought of patch-fix and uses NEURO-FUZZY engine, which greatly improves games compatibility. Its new hardware and games engine completely relax the speed limitation of SD card. So users never worry about the speed and compatibility of SD card.

As a multi-featured product, M3DSReal bring lots of enjoyment to users. No dout that the excellent homebrew support, bulit-in “Media-EX” application and robust multimeida features make M3 DSReal become one of the strongest flashcart in the market.

4. EZ5 is a flashcart from well-known EZ team for slot-1 solution. Like other flashcarts, it also has no Flashme, Passme, or PC software required. And its media function bring much more fun to users. As an outstanding producer of flashcart, EZ Team is always apt to give people different impressions. EZ5 not only has Drag & drop clean ROM support, also optional hybrid ROM patching. The unique Hybrid system mainly helps slow Micro SD cards play ROMs at full speed with no slowdowns. The tool will also automatically trim ROMs for you to make them smaller. Anyway, EZ5 is a nice cart for compatibility and its good performance during gameplay.

Note: In the early of Jun 2008, EZ released a new product EZ5+ with SDHC support. And during last Christmas Day, it launched a modified version, EZ5i compatible with Dsi.

Summary：

There is no the best one, but the most suitable for you. Users choose flash kitaccording to your own need.

Here is a table for comparison:

Rating：S>A>B>C>D