I found a video online that is great. It took care of a dried up HP60 color ink cartridge and saved me money as I can now use the cartridge I was about to throw away. Many others have left comments about this video and some even were ready to buy a new printer. I did use method one but also incorporated method 2 but instead of using a bowl of warm water held the specified part of the cartridge under very warm water after doing method one. WHAT A SURPRISE!!! I could now print my 2021 calendar that did have some color as well as other documents that have color.
You might also want to look at other videos on this link. I haven't tried any but this one was so good I would go back to this link for more printer help.
https://www.youtube.com/watch?app=desktop&v=U3dp1T7tr4M