r4i sdhc v2.0 update 1.4 doesn't work anymore

hello.i got this card, and i tried to update it to play pokemon black2
but when i did, i get an error on my ds, saying:an error has occurred.
press and hold the power
button to turn the system off.
please refer to the nintendo dsi
operation manual for details.i have this kind of card: http://www.r4isdhc.com/wp-content/themes/nds9/images/r4i-LH.jpgcan someone help me? it's version 2.0 upgrade 1.4
i need it again badly.oh, my ds version is updated to 1.44 too......

the dowload patch doesn't work either.... tried it 3 times.i get white screen on a normal ds, and the error on my dsi and 3ds......

i have this card for like 2 years.... but thanks.....