Before the last firmware upgrade i was very happy with my OfficeJet Pro 6960, most of the time i use the scanner and time to time i print black and white document, i didn't use it for photo or hight quality print, for that reason, i use generic black ink cartridge, mostly for the price has i don't care of the quality.
Now, HP decide to upgrade my printer firmware with a malicious software, amd y cartridge are useless. to be honnest i don't like the idea that HP can do what ever they want with my IT equipment, this "printerJacking" make me feel that this printer is not for me.
Dear HP, instead of blocking customer printer, why don't you just put a message that if you use other cartridge than HP the quality can be lower, and let customer decide, and when you decide to upgrade a firmware, please GIVE CUSTOMER ALL INFORMATION ABOUT THE FIRMWARE!!!!!!!!!!! WHEN "SECURITY" IS BASE ON MARKETING STRATEGY.... THINK ABOUT HOW MANY CUSTOMER YOU ARE READY TO LOOSE