HP8600 non-HP ink cartridge blocking

[Yosi_A]

I enabled firmware updated on my HP8600 and since then I can't use my non-HP ink cartridge. Searching the forums, I understand HP block this option. I understand there is an option to upgrade the firmware but cant find firmware for HP8600 (only 8610 and above)

I can't use my printer.

How can I upgrade the firmware to avoid this blocking? Alternatively how can I downgrade it.

I could not find the accurate firmware anywhere. The one in HP page for 8600 is already the one install which cause the problem.

Please urgently help

Thanks

[sabretooth04 · Accepted solution]

What is the exact error message you are getting on the front panel of the printer?

You are correct, the HP 8600 is not having any firmware issue.

This Post pertains to the following OfficeJet products listed in the following table that has new firmware that disables the cartridge security affecting cartridges using Non-HP security chips.  If your printer is not listed here, it is not affected.

See here.  http://h30434.www3.hp.com/t5/Inkjet-Printing/Dedicated-to-the-best-printing-experience/m-p/5783870/h...

Product series    Compatible Inkjet Cartridges    Firmware Availability Date
OfficeJet Pro 6230 series    HP 934 and HP 935    12-Oct
OfficeJet 6810/6820 series    HP 934 and HP 935    12-Oct
OfficeJet Pro 6830 series    HP 934 and HP 935    12-Oct
OfficeJet Pro 8610/8615/8616/8620/8625/8630/8640/8660 series    HP 950 and HP 951    12-Oct
OfficeJet Pro X451dn/dw, X476dn/dw, X551dw, X576dw
    HP 970 and HP 971    17-Oct

The optional firmware update to remove dynamic security is now available. For more information and direct links to the firmware updates, see Dynamic Security Feature Affecting Use of Non-HP Cartridges here.

https://support.hp.com/us-en/document/c05308850

[Yosi_A]

Thank you for your prompt reply. 

Your input regarding that the security check is not applied to 8600 gave me a new idea. I just plugged out each of the cartridges and enter one by one. Seems that the yellow cartridge did the problem and I’ll replace only this instead of buying a new set of original cartridge.

Much appreciated. You saved me a lot of money and hours of extra research.