My card is r4i sdhc 3ds

i updated my dsi xl back in 2013 to 1.4.5E since then i never played it again. I dont know why but today after this years i wanted to play, so yea, i just downloaded the update r4i sdhc
but doesnt work?
this is the error i get
is there anyway to downgrade the firmware?

i updated my dsi xl back in 2013 to 1.4.5E since then i never played it again. I dont know why but today after this years i wanted to play, so yea, i just downloaded the update r4i sdhc
but doesnt work?
this is the error i get

is there anyway to downgrade the firmware?
Last edited by mafias21,