Due to a recent firmware update from HP, some users may encounter an error message when using certain re-manufactured inkjet cartridges.
Currently the issue is limited to the following cartridge numbers: HP 934XL / 935XL, 950XL /951XL or 970XL / 971XL
and the following printer model numbers: OfficeJet Pro 6230 series, OfficeJet 6810, 6820 series, OfficeJet Pro 6830 series, OfficeJet Pro 8610, 8620, 8630, 8640, 8660 series, OfficeJet Pro X451dn/dw, X476dn/dw, X551dw, X576dw.
If you are receiving an error message while using a Cartridge Warehouse of San Diego printer product please consult this troubleshooting advice from HP. Following the instructions in the link will allow users to alter the firmware update and continue to use re-manufactured ink cartridges.
If you continue to experience issues please contact us and we will work to solve your printer problems.
Our product microchips are currently being updated to work seamlessly with HP printers and avoid this inconvenience in the future.
CWSD products are guaranteed against defect for a full year and we always stand behind the products we sell.
Thank you for your understanding as we remedy this issue. We greatly appreciate your business and loyalty.