Hi Jun -- Here's another success story for your page. I recently purchased a Linksys WPC11 v4 card, which I promptly exchanged with Linksys for a WPC11 v3 card with an Intersil Prism 3 chipset (the box for their v4 card came with a note explaining how to do this; makes for a nice inexpensive way to get a Prism 3 card). The WPC11 v3 card came with primary firmware 1.1.0 and station firmware 1.4.2. Booting my laptop into WinXP Pro, I downloaded the Intersil Windows Firmware Update Tool (ver 0.7.0) along with the necessary files to upgrade the firmware to 1.7.4 (primary pk010101.hex and station sf010704.hex) -- thus far, very similar to Brad Chapman's email on your site. I installed the appropriate win32 drivers for the WPC11 v3.0. Starting up the winupdate program, it reported that the card was currently showing primary 1.1.1 (ak010101.hex) and station 1.5.6 (rf010506.hex), which must have been loaded into volatile ram by the win32 driver software (rebooting into Knoppix-Linux still showed primary 1.1.0, station 1.4.2). I attempted to perform the firmware upgrade with the winupdate program, but I repeatedly got the "Error Programming Block. Continue anyway?" messages mentioned on your site, though unfortunately the workaround under Win2K is not possible under WinXP. I did attempt to then use hostap under Knoppix-Linux, but ran into difficulties which I won't go into. What worked for me was booting back into WinXP, removing the drivers for the WPC11 v3.0 and forcably installing the drivers for the WPC11 v2.5 instead (taking a clue from Pavel Roskin). At this point, the winupdate program reported the card to be at 1.1.0/1.4.2, and I successfully performed the flash update to primary 1.1.1, station 1.7.4. One of my goals was to use the WPC11 card in host_ap mode in an old laptop running OpenBSD 3.4. I was not able to successfully do so with the 1.7.4 firmware -- downgrading to 1.5.6 resulted in success with host_ap mode using BSD's wi driver. I hope this might help as a clue for others running into similar issues under WinXP or for those interested in host_ap mode with BSD's wi driver. Many thanks to you for your extremely informative and helpful site -- without your site, I would still be stuck with outdated and less functional firmware. Thanks, Davin Potts