if you are referring to updating it to work on a DSi Running Firmware 1.4;
then this web site contains info and videos on how to update many carts to work on DSi 1.4
http://dsdatabase.org/blog/2009/08/14dsifirmware/
NOTE: updating your card's firmware, is Risky, and theres a small chance of bricking;
Meaning your card may cease to work, AT ALL.
Although I haven't seen any reports of this killing anyones card yet,
you have been warned!
Also Piracy is Wrong, Use homebrew!!!
If you updated the DSi, the new update may prevent you to use the R4i
The r4i gold card is much better than r4i ultra card. The r4i gold is most popular in the world. it can work on Ninendo 3DS, DSi V1.4.4 and DS console. the r4i gold firmware keep on update to support latest 3DS system update. But the r4i ultra card is a very old console. it is now out of production. And as lack of firmware update, it can only work on Nintendo DSi V1.4.1 and DS lite console.
the r4i v1.4 card is the old version, it can only work on dsi v1.4 and below console. No the latest r4 card for dsi is the r4i v1.4.5.
The best option is to get a new flash card that supports the latest firmware version released for the DSi. Currently, v.1.4.2 is the latest DSi firmware. Many cards support this version, R4i-SDHC or R4i SDHC 3DS will support v.1.4.2 with the latest kernel. By update the r4i gold firmware, it can works on Nintendo 3DS, and the latest DSi V1.4.3 version.
yes you can but you need to download a software called r4i update
Currently, both r4i sdhc v1.42 and R4i SDHC 3DS card can work on DSi V1.4.2. If it is made after June 18th, the r4i sdhc card can work on Nintendo DSi V1.4.2 straightly. Or else, the card has to be upgraded to support DSi V1.4.2. You can download a update patch from official website, and install it
yes it does only if u have the latest firmware. Both the r4i sdhc 3ds card from r4i-sdhc.com and r4i gold 3ds card from r4ids.cn can support DSi european!
Only if you buy a R4i DS.If you have DSi Firmaware 1.4 , you will need to make sure the box says "v1.4!" Original R4 DS card can't work on DSi. There are many r4 dsi card in the world. which can run on Nintendo DSiXL, DSiLL, DSi, DS and DS lite.
no sorry but you can do it on r4i on dsi you need and adapter because ive tried it then i got r4i and it works !!!!
Download kernel from r4i card official web,Un-zip kernel,Copy all files into microSD card,insert microSD card into R4i card,insert R4i card in to DSi.
The best solution would be the R4i gold edition. To get it working you need to download the 1.41 kernel from r4ids.cn then update with a NDSL or NDS then it should work just like old ones on your dsi. Nintendo updated DSi V1.4.2 version on May 2011. most flashcard were halt. Now the r4i gold V1.4.2 from r4ids.cn and r4i sdhc v1.4.2 from r4i-sdhc.com can support Nintendo DSi V1.4.2 version.
An r4i can let you back up the games that you already have (please note an r4i only works on a dsi and dsi XL if you do not have a dsi or a dsi XL you will have to get a normal r4 but do not be sad a normal r4 cando everything an r4 can).