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.
I don't think so. When I got my r4i gold, the salesman advised that I not update my DSi LL, by using the browser or connecting to the internet, or else my r4i gold won't work anymore.
The r4i gold can also be updated to support latest DSi version. you can go to official website, download the update patch, after installation, it can work on latest DSi V1.4.3 and before version.
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.
If your r4i gold Edition is old version, it has to be ugraded in a DS lite to support 3DS or DSi V1.42 console. But if it is new, it can work on Nintendo 3DS, DSi V1.4.3 or DSi V1.4.2 straightly. No need any update.
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.
yes you can but you need to download a software called r4i update
If you updated the DSi, the new update may prevent you to use the R4i
Nintendo DS/DSL/DSi are region free. Thus it does not matter where the hardware is from, it will play all games including all R4i cards. The latest r4i gold card from r4ids.cn is r4i gold 3ds card. It support Nintendo 3DS,DSi and DS console. with all versions, including EU DSi. R4i Gold from r4ids.cn support all DSi version. Such as: DSi V1.4.3, DSi V1.4.2, DSi V1.4.1 and DSi V1.4. It also support Nintendo 3DS, DS and DS lite. Good card.
the r4i gold card can work on DSi V1.4e directly, no need any upgrade. Just install the latest wood r4i gold kernel to the SD card, then it can work.
Of course, r4i gold card from r4ids.cn can work on Nintendo 3DS, DSi V1.4.3, DSi V1.4.2, DSi V1.4.1, DSiLL, DSiXL, DS and DS lite.
r4i gold and r4i sdhc card are most popular in players. both of them can support 3ds, dsi and ds lite. but personally, I think the r4i gold card has better compatibility.
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!
it depends, if you want to play DS/DSi games on your 3DS than R4i 3DS is your only choice but if you want to play DS/DSi games on your DSi then the R4i Gold. Both of them are vrey popular in Nintendo players. It is hard to say which is better, just as you like.
If your r4i gold card is very old version, you may need to upgrade it for Nintendo 3DS V3.0.0 and DSi V1.4.3 console. But if the r4i gold is made after Aug 2012, it no need any upgrade. Just download the latest wood r4 v1.45 lernel for installation.