We found the following offer on Ebay: https://www.ebay.ch/itm/284876280716?hash=item4253f3138c:g:CLoAAOSwpepiu~95&amdata=enc%3AAQAIAAAA4MgG4qLvVaorVIcocrfwsuUstbiXLXRme41j0b1iPpkreQ9Vp7Nt9HFbXgUjERqwgG9mFw9J37g2g%2FTMkenpJYLYdnWwrp7nBV8GV2d%2Bv9cg8ew1sh4jfe2SY2hlStAVG36KpmKY2rroZnwK%2FAGRbX4Bt%2BRvLeSrK4GkbAHyk8sNfAHzPvo4f0qAkXbXmZOC9sJSYUNCXfaM9yf%2Bx2316E%2BVmK5OWnzlNBYJtGBnTw3bvgymfHj11uWzqkRe%2BRx5M4ik22JVYj4oElAbM9Xkfw%2F4SxsJfAZsdOYwx6NFs72a%7Ctkp%3ABk9SR4TDr5GmYg «WiFi Shield for OpenBCI has improved the known bug of the original version (the bug will cause noise during the acquisition process). The latest version of the firmware has been flashed, and the firmware can be continuously upgraded»