HP Officejet 7720 firmware downgrade
I’ve been using an HP Officejet 7720 wide-format printer for a couple of years now. It’s a pretty good printer, off course it gets stuck from time to time, but it works well enough. I’ve been using 123inkt cartridges. Not because they are better, but but because you can easily buy three 123inkt cartridges for 1 HP cartridge. I’ve seen adverts mentioning that if you use HP Instant-ink you get an automatic firmware upgrade that will block non-HP cartridges. I can understand that from the HP point of view since you’re subscribing to their inkt-as-a-service plan, you need to use those cartridges. I’ve also been looking into instant-ink for my printer, but i found it wasn’t supported. However i found that HP is also blocking printers that are not compatible with instant-ink, with the “excuse” that they can not guarantee quality. Nice excuse, but my printer is out of warranty…