R4 3DS new (r4itt.net)

I bought this from Ebay with the Mario Edition 3DS. The games were just mostly white screens. Son put cart in his DS and the games worked. Somewhere between swapping the cart between 3DS and DS, cart was erased. I formatted the memory card and downloaded the Kernal and Firmware. I followed another site to setting up a R4 cart. It stated to copy Kernal files to cart (no firmware). I dump some Roms on it... DS works flawlessly, 3DS some games work, but I get error (DS cart missing please reboot) after playing the game for a few minutes.Cart: R4 3DS new
Site: r4itt.netUnit 1: DSi
Unit 2: 3DS (I have 2 3DS units)I am assuming the cart needs the firmware update too.. yes/no ?
If yes, what do I do with the firmware folder that has the files ?TIA!

http://forum.romulation.net/index.php?topic=43005.0
see where your card is on that and if you have the cash i highly recommend a supercard ds2http://r4itt.net/?c=development
Check you Micro Sd typehttp://r4itt.net/?c=gamekernel
check your card version hereI can't see any download links on the website so far

r4itt.net/?c=gameklist1Mine is the cart that has 'new' on it.Here is the files I downloaded: New2.37_English.RAR (Kernal) + fwUpdate_V5.06.RAR (Firmware)I did NOT do the firmware update and the 3DS firmware has never been updated since I bought it near X-Mas.I think the cart needs firmware upgrade, but I am new to DSi/3DS :)

If you have downloaded are complete and aren't corrupt
extract them both to the root of the Sd card
i believe you should place the fwUpdate_V5.06.nds file on the root
when you insert the card it might automatically start the updateBut if it doesn't and runs like normal run the .nds file like a game
And it should start the update process follow on screen instructionsMake sure your device is fully charged and remains plugged in throughout the process
Do Not Turn Off Your DeviceEven if the device seems to do nothing for ages leave it alone and it should complete
It shouldn't take to long but i have no experience with this device

Good News, all roms load
Bad News, all roms get card mising errorThanks for firmware update walkthrough, it was perfect :)
If you need exact error message, let me know.Thanks!

Your welcome im glad i could help
I do not own nor do i have any experience with this flash cardBut if you provide me with the exact error message i might be able to find some information on itA common way to fix errors is to backup your .nds files and saves without saves is cleaner but you will lose progress
Format sd card to defaults
And place official firmware files on the root and see if that fixes the problem