dsi error message

[parley]

hi a girl in work has a dsi with ver 1.4.3E firmware on i have tried her own R4i card and mine with latest 1.56b firmware on but keep getting error message off " an error has occurred press and hold power button to turn system off, please refer to manual"

any help is much appreciated.

[parley]

are there any R4 cards still for sale that will work in a DS?

[parley]

same girl has bought a DS in today with an R4 card that apparently is working in her friends DS, but it does not work in hers, how can i tell what firmware a DS is on i cannot see an option. thanks

P.S i would google this but i sit behind a firewall that blocks all sites about gaming except digitalkaos for some reason.