@Tini_7
I reviewed your post and I understand that the printer stopped working after updating the Mac OS to version 11.
Don’t worry, I assure you I will try my best to get this sorted.
HP Deskjet F4280 driver for macOS 11 is not available from the HP website or Apple Software Update. However, Gutenprint (formerly called Gimp-Print) provides open-source basic print drivers for many printers that would otherwise not be supported in Mac OS X. To see if your printer is supported, go to Gutenprint drivers for more information.
NOTE: Gutenprint drivers are not supported by HP or Apple.
Let me know how it goes and you have a great day!
P.S: Welcome to the HP Support Community 😊
If you wish to show appreciation for my efforts, mark my post as Accept as Solution. Your feedback counts!
Cheers!
Stay Home – Stay Safe
The_Fossette
I am an HP Employee