I recently updated my 3DS to 6.2.0-12U for the streetpass relay station and wanted to use my flashcart again but it doesn't seem to update and gives me an error message when I load it. I downloaded the EOS from the big click to download and v1.23 firmware from http://eng.supercard.sc/manual/dstwo/download.htm and put them in the root of the micro SD which had _dstwo Games dstwoupdate.dat ds2boot.dat I then put safely ejected, put the SD into the DSTwo and updated it with my DS lite. I got the update successful message but when I stick it in the 3DS I get an error but putting it back into the DS lite and there is no issue. Am I missing a file to update? I purchased it from realhotstuff.hk and it worked out of the box for v4.5.x on the 3DS and I didn't bother updating for 5.x as I didn't have an urge to use it.