After updating r4 firmware, both my computer and NDSL wont read the microsd

i downloaded the latest firmware patch and loaded it into the r4, now my ds and my computer wont read the microsd. any solutions?

try restarting your computer first, it may be a drive error.

no dice. tried the sdcard on my phone and it wouldnt read there either. wont even let me format it.

hmm thats really odd, do you have another adapter for the SD? ie try reading it on the comp. through a USB adapter instead of an SD adapter or vice versa, other than that I dont know... doesnt sound very good though.

i have the same problem too i have a R4 and a super sd the super sd mini sd card wont work after i put some roms in it i tried wif differnt adapter still no luck :'(

if it wont read the thing... format it. thats wat i had to do so many times