HP are very hot on updating the firmware to stop the use of aftermarket ink cartridges. They often do this in the background, without the user even realising that it has been done!
As such, we offer downgrades to older versions of firmware below. If you are unsure of how to use these, please give your personal account manager a call!
HP 903 Ink Printers – Click HERE for Instructions
HP 912 Ink Printers – Click HERE for Instructions
HP 953 Ink Printers – Click HERE for Instructions
HP 963 Ink Printers – Click HERE for Instructions
HP 973X Ink Printers – Click HERE for Instructions