Where to buy R4 DS?

There are some stores around the city where can buy R4 DS, but now the most common way is shopping on website, compare with the original stores, shopping on website makes your shopping much safer,easier. You can choose much more kinds of R4 DS , compare their advantages,price before making an order. Normally, the online shop will provide Free shipping and accept returns.
To buy R4 ds online, you need to pay below points:
1.Make sure they have genuine guarantee.
2.Compare the different R4 DS to choose the best one for your console.
3.Return and  refund should be acceptable.
4.Free shipping is another way to save your money.
5.Afer sell service provided: Kernel donwload, upgrade...ect.

Please pay attention to that original R4 DS just can be used for Nintendo DS with max. 2GB TF memory, if you need higher capacity memory, you can choose R4 SDHC. R4i DS can be used for both Nintendo DS and DSi. For those who want to play 3D games, R4i 3DS is the best choice.

Nowdays, more and more Nintendo DS users choose to shopping online go get their R4 DS, choose the correct seller is very important. Follow or consider above keys to shopping better!

How to upgrate your R4i SDHC V1.4.1 to work with your 1.4.2 console?

R4i SDHC V1.4.1 compatible DSi V1.4.1, but now some console have upgrate to V1.4.2, so how makes your R4i SDHC V1.4.1 works with your upgrate console? Please kindly following below instructions:
Download the upgrate file at offical website or download from R4icard-ds.co.uk.
You will see below:

Open the file, you will find below:

Installed the fwup142c.nds with below steps:
1.First, reformatting the SD, download the latest kernel 1.38b.
2.Unzip and copy the files(R4iMenu,moonshl2,moonmemo,r4.DAT) to the root of MicroSD card.
3.Download the latest upgrading programs. Unzip and copy the file(fwup142c.nds ) to the root of MicroSD card.
4.Insert MicroSD card into r4i-sdhc card, insert r4i-sdhc card into nds\dsl\dsi\dsixl\3DS
5.Turn on console and press "A" button to run the upgrade file fwup142c.nds. Note:When upgrading the r4i-sdhc card, it is not allowed to turn off power or pull out r4i- sdhc,otherwise it will damage the r4i-sdhc card.

But please note:
1.You can not upgrade R4i V1.4.1 with NDSi V1.4.2. If your NDSi console has already been upgraded to NDSi V1.4.2, you will need another NDSL or NDSi (which should be under version V1.4.2) to upgrade your R4i V1.4.1 flash card.
2.make sure nds fully charged, better with external power pluged.
3.The R4i SDHC 3DS also can follow the same procedures.

Now, your R4i SDHC V1.4.1 flash card have upgrate to V.1.4.2,just using it with your console.