Problem with my dstt cart

Today i downloaded pokemon hearthgold on this link: http://www.megaupload.com/?d=FF4O092JSince then i can have the dstt menu but I cann't start any rom.
The only files that i can run on my ds are moonshell and all my homebrews I think it's due to the game I downloaded but I'm not 100% sure of it, I deleted the game but my dstt still doesn't work.Can someone give me some advice to make my cart back working or something like that pleasee, I don't know what to do anymore :s

Try instaling the latest firmware.dunno exacty what it is, but it's on GBAtemp.

I already did that but it doesn't work

What error do you get?

Replying to #4

I press on A then the load start for something like 1/2 a second and then it freezes.

Replying to #5

Hm.Please copy all your content of the SD card to the computer, then format the card.
Computer > Removable Device (right click) > Format
Make sure it is the right one ;)

Yes!!!
it worked when i was copying the files of my SD card on my computer the antivirus luckily detected a virus.
Thank you Yoshi :)Btw is there a non-freezing version of pokemon for dstt without viruses?

Replying to #7

Yes there is...Let me look for a second.
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Here:
http://forum.romulation.net/index.php?topic=41013There are a few links, so you can download all you want.No problem btw :)

Thank you very much :)