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06-12-2019 10:45 AM - edited 06-12-2019 10:46 AM
Product: HP OfficeJet Pro 6960
Operating System: Microsoft Windows 10 (64-bit)
Hi,
I accidentally updated firmaware of HP OfficeJet Pro 6960 to the latest version. After that I tried replacing cartridges with non-HP cartridges and I get the following error on printer screen (I tried replacing all the catridges and I always get the same error:
Cartridge problem
Remove and reinstall the indicated cartridge, making sure it is correctly installed.
Is there a way to downgrade a firmware? When I go to details page of this printer, i only see the latest firmware, where can I find older versions of firmware?
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