3rd party card not read

[sairuk]

i've dumped a bunch of cards successfully today with this tool, thanks very much

I have one 3rd party card that wont read. can you suggest best method to debug if this is either a dex drive or software issue? card reads fine in the ps1.

$ dexattach --check --verbose /dev/ttyUSB0 
Opening /dev/ttyUSB0 and setting line discipline
Device number is 254:0

 lsblk
NAME        MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
mmcblk0     179:0    0 14.8G  0 disk 
├─mmcblk0p1 179:1    0  256M  0 part /boot
└─mmcblk0p2 179:2    0 14.6G  0 part /
dexdrive0   254:0    1  128K  0 disk 

$ dd if=/dev/dexdrive0 of=/data/retronas/dex_card10.mc
dd: failed to open '/dev/dexdrive0': No such device or address