Need help with Dsi/R4i Card... Please?

I bought an R4i Revolution Upgrade Card for my brand new Dsi a few weeks ago. The box is red and it has the 1.4 Firmware compatible symbol with the URL www.r4i-sdhc.com. The card was working fine and playing downloaded games for a about a week but I've only had it for a week. Last night I hit the Wi-Fi option and it started downloading kernel updates. When I turned the DSI back on it said"Fake Card-Return to Retailer"
Afterward, I contacted the website that I purchases the card from and they of course told me to format the SD card and check for latest software. I did all of these things. Now the Fake Card message is gone, but all I get now is a blank white screen. Does anyone have any advice or anyone that has had experience buying from this retailer: www.r4-ds-card.com?
I've even gone as far as Formatting the Dsi back to original settings and still nothing. Is it possible that my SD card is bad. It's a SanDisk 2 GB...?

Also, if you think that this card is crap would anyone recommend what card to buy and from where?

Thanks for your time!
Mandy

Please read the rules and regulations regarding your question and the stance on piracy issues here on DCEmu.

Yeah the r4 is crap. For other options i recommend the acecard 2i. get it from shoptemp.com as they sell legit acecards