There have been only 3 confirmations of buster's process posted at top of CVS Red & Blue and bottom of Success 1 2 many 4 all threads.
Make it 4. Here's what I've found, following BinaryWeavers directions using the modified driverx.inf simplified from buster, I've gotten it to work on one PC reliably. I still need to plug and unplug multiple times to get it out of "boot loader mode", but once it get past that point, we're ok.
A side note, all three machines I've tried this on is Winblows XP SP2. The VIA chipset works fine if and only if I unplug ALL usb devices before running PV2tool. Else PV2TOOL runs in the background and I can't end task it and I can't bring it forward. My Intel chipset based USB 2.0 laptop always, always, and always BSOD on me when I try the Fox2 drivers and then PV2Tool... I can install the libusb alone and unlock the camera and download firmware fine. So my guess is something messed up with those twain drivers. Third PC is a really old P3 system, and that's the one I extract pictures with.
I edited the foxz2 install directory INF, and copied libusb0.dll into that directory too. Then I ran Setup from Foxz2. After connecting the camera, I point my "found new hardware" driver thing to that directory with everything in it with the corrected INF file to include the libusb stuff, it will find everything it needs based on it being in that directory.