HP has updated the firmware again on network printers that have updates enabled.
This affects the HP printers that take the HP 934 / HP 935 cartridges (including 934XL and 935XL).
Here is the latest on the 934/935 Chip issue that has started affecting some customers around March 2016:
The firmware updates will only affect you if you have have chosen the option of automatically upgrading your printer firmware. In general you should NOT pick that option whenever your printer prompts you to.
We have a solution!
1. If your cartridges that are in your printer suddenly stopped printing, or are not being recognized by the printer, understand that this is due to what HP has done to cause you to be frustrated and go back to buying expensive original HP brand. If you want to continue saving money, we have the solution - a NEW CHIP WHICH WE HAVE INSTALLED ON OUR CURRENT SUPPLY OF CARTRIDGES.
2. Contact us and let us know about your situation, and request us to send you NEW CARTRIDGES (with the NEW, LATEST Chips).