Well I'm not sure what I'm doing wrong.
The card works perfectly well in a NDS lite. I have copied and tried to update with firmware 1.08, 1.09, 1.15, 1.16, 1.19, 1.25 by copying the .dat file as both dstwoupdate.dat and ds2update.dat, and I've also tried the "failure" mode on a DSi and 3ds by...