this is the error I get on the S2600WT2 - running the latest BIOS/FW stack as of 6/25/15
I can mount ISO no problem, and IMG, but having issues seeing the USB drive connected to my local PC
hopefully someone can assist, tired of walking to the lab
I've tried multiple USB sticks, my current one i want to use is 2GB, but have tried 4GB and 8GB models as well
also tried different USB ports on my system, both front and back