I'm Sorry, i don't know, it's not written on the card, and i don't have the box but in linfoxdomain i've discovered that It could be : R4 SDHCndslr4.com, r4sdhc.comLatest 2010: v2.10T07 R4i: v2.07 R4: v1.34 .
The R4 v 1.34 actually works, i've used this firmware...