Downgrading a HP 7740 Firmware Because of Ink Cartridge Problem. – My Printer and Computer Logs

Non-HP Chip Detected error message for 902/903/952/953/972/973 - Firmware Update. Fixed! Working method. : u/DaveJhonson20

HP Officejet 7740 Failed Firmware Rollback

Certified solution on downgrading firmware to remove cartridge problem error. Certified solution for the HP Officejet Pro 7740 printer with a cartridge problem error related to using third party ink cartridges.

Indicated Cartridges Blocked For Containing Non-HP Chip - HP Support Community - 8229894

Downgrading Firmware on HP Officejet 7740 When It's not Recognizing Third Party Cartridges.

Certified solution on downgrading firmware to remove cartridge problem error. Certified solution for the HP Officejet Pro 7740 printer with a cartridge problem error related to using third party ink cartridges.

Downgrade HP Printer Firmware to Fix Non-HP Chip Detected Error

Disabling Firmware Update on HP OfficeJet Pro 7740

Non HP Chip Detected Fix: Quick & Easy Solution

HP have updated their printers to outright ban 'non-HP' ink! They no longer shows the “can't guarantee quality” message, but instead cancels your print completely until you inset a HP ink cartridge.

Hewlett-Packard hit with complaints after disabling printers that use rival firms' ink cartridges : r/gadgets