You don't need to reformat the r4i gold card. You just need to format the MicroSD card, and reinstall the r4i gold kernel and games. Nothing about the r4i gold card.
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.
The R4i Gold 3DS card from r4ids.cn has all functions of r4i gold v2.0. It support Nintendo 3DS, DSi and DS, including the latest 3DS V2.1.0-4 console. If you want to get a good flashcard, I think the r4i gold is better than r4i gold v2.0.
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 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.
For r4i gold from r4ids.cn, the latest firmware is wood r4 V1.46; for r4i gold V2.0 from r4ids.com, it is the AKAIO V1.8.6 kernel; for r4i-gold card from r4i-gold.com, the latest software is r4i V1.71b.. Now it is already wood r4i v1.51b.
You don't need to reformat the r4i gold card. You just need to format the MicroSD card, and reinstall the r4i gold kernel and games. Nothing about the r4i gold card.
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.
The R4i Gold 3DS card from r4ids.cn has all functions of r4i gold v2.0. It support Nintendo 3DS, DSi and DS, including the latest 3DS V2.1.0-4 console. If you want to get a good flashcard, I think the r4i gold is better than r4i gold v2.0.
Most cheap price and high quality of r4i gold 3ds can be found on r4i gold 3ds official reseller
If the r4i gold card can't work, you can download and install the latest firmware. but if the r4i gold is broken, you can contact the reseller for exchange.
Typically R4i cards are only bought online - but I wouldn't buy an Ri gold card. It's a fake card (the original R4i is red in colour). Most flash cards are made in china, including the r4i gold card. you can buy the latest version - r4i gold 3ds card online. It usually cost 2 weeks to delivery to you. As before said, the r4i gold 3ds is not the best r4i card. Maybe, the r4i sdhc 3ds is better.
Acekard 2i is better
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.
You can try to format the TF card, and re-install the r4i gold kernel again.
You need to download the r4i gold kernel and some DS games. then put the r4i gold kernel and ds games into the root directory of the SD card. then it can work.
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.