It has been confirmed that HP have released a new Firmware (August 2018) for any printers recently affected by non working compatible 903 and 903XL cartridges.
The new firmware file removes outdated supplies authentication measures as deployed in the latest automatic firmware version that may have been downloaded to your printer. This automatic update may prevent the printer from working with third party cartridges that contain non-HP security chips.
Please note that even with this change HP cannot guarantee the quality or reliability of non-HP supplies.
If you have one of the affected printers listed, then we recommend visiting the correct link for your printer below:
HP Officejet Pro 6950
HP Officejet Pro 6960
HP Officejet Pro 6970/6975
1) Simply download the correct firmware file from the HP website by clicking the 'Download' button above that is relevant to your printer model.
2) The downloaded file can usually be found in your 'Downloads' folder in Windows. Double click the file. It will run and search for the relevant connected printer. Click 'Update' to begin to update your printers' firmware. This may take a few minutes to complete.
*Inkredible.co.uk do not take any responsibility for failed Firmware updates and as such, they are only to be undertaken at the customers own risk.
Let us know if this re-enables compatible cartridges for you!
Which Printers Are Affected:
- HP Officejet Pro 6950
- HP Officejet Pro 6960
- HP Officejet Pro 6970
- HP Officejet Pro 6975