Total headache with R4

[cyanideandcandy]

I had many, many saved games with my R4, including pokemon Heart Gold. Well, I updated to the latest update and now my saved games won't work. Why is this? Any help will be much appreciated.

[barrowmanandrew]

start a game, any game and let it create a sav file, then put your card in your pc and look at the file extension.
you will proberly find that the file extension is diffrent from your old ones.

change your old file extensions to match the new one and the card should pick them up.

[pandya]

I have tried formatting and changing the dates,but the result is failed.