ftp://ftp.hp.com/pub/softlib/software13/printers/SS/HDD-UI-Recovery/
File for your device should be:
K4xx0_evxx.xx.xx.xx_FSxx.xx.xx.xx_HDD.zip
If you find the information provided useful or solves your problems, help other users find the solution easier by giving kudos and marking my post as an accepted solution.
I am a volunteer, offering my knowledge to support fellow users, I do not work for HP nor speak for HP.
