1. when maunfacturers of products (often software) try to deal with flaws in their designs without actually addressing said flaws, and fail to improve things (often making them worse).
2. to neuter a product, i.e. make it unusable, by applying a phix.
3. a phoney fix (often used for phishing)
I applied all the OEM's phixes and I still can't get my word processor to stop crashing when I type "phix".