RS1

I too have the same problem. I have 2 XP-15000 printers. The one printer that went to the full enter activation key has OEM cartridges in it and has been working fine for 4 months. The other XP-15000, I decided I need to have chip-less as well. I have a CISS for this printer. On the Firmware Updater it says that the firmware is 20.42NW99Z9. The Firmware Updater goes too 99%, and does not go to the point where I input the activation key (after clicking next). On the printer LCD screen it says that the version is NWO7K7. One ink tank is nearing the time to replace the chip. I don't want to spend the money to buy a full set of chips when all I need is one chip. Will this affect the Firmware Updater to not go to the point where I enter the activation key? The printer firmware is already updated, but I do not know where to enter the activation key. RS