This firmware file allows you to flash the PCL5/PS personality card firmware and upgrade to V6.4.0 for the hp business inkjet 2200/2250 series product. It is compatible with Windows 95, 98 NT4.0, 2000 & ME. It is released to address bugs in previous firmware versions and includes: Improved printhead alignment algorithm resulting in significantly better print quality Support for Asian media Support for the hp jetdirect connectivity module (USB/Serial) : part number - J4135A Support for the hp jetdirect 610n eio internal print server (ethernet/fast ethernet) : part number - J4169A Fix for the printing of double images for Digital Sender jobs Fix for the "invalid" NVM address reporting which sometimes occurs on the diagnostic test page