r4i stop working

hello everyone.
my r4i (it's a clone) worked perfectly until yesterday...
if i try to open every single game it says "savfile not founded! Please reset system"
i have 1.3GB of free space and i tried formatting the card and even to rename the files, but neither of this worked

I'm not sure how long you've had your card, but I remember running into a similar problem. Try setting the date on your DS(i) a few days back. If it works, then that's your problem and you'll never be able to pass the date it stops working.So, I had to set my DSi a few years back so I wouldn't have to change the date everyday.

I agree with Xaq, however this will also happen if you are using TTMENU.nds
With the TTMENU.nds you cant use your R4i for games. You can only use the TTMENU.nds
This also happened to me however i redownloaded the rom and it worked.By the way which R4i do you have?

i have the sdhc v 1.4 with the red mini box... it wasn't bad, until it completely stopped from working -.-" now i'll try and i'll post if i'll have any news...EDIT: it didn't work :(