I successfully updated my 770 OS to 2006 with the Mac flasher. I then had problems with the mmc card and ultimately had OS issues. The "Contacts" icon is no longer accessible/visable. I am now trying to reflash to 2006 BETA with the linux Flasher-2.0 and it finds the device, begins "Sending xloader image ...", then i get this:

Unable to send filler bytes
usb_bulk_write: Invalid argument

I am able to enable/disable RD mode, query the device, etc. I cant downgrade to the 2005 OS now either. Any advice on this issue? I am using the linux Flasher-2.0 on the latest Redhat version for intel.