I probably should have explained this better. Firefox continues to support XP with it's esr (extended support release) program updates; as I said the latest is 52.9 and it supports most newer web technologies. You can either download Firefox ver 52.9, or download an earlier version click on Help>About Firefox and Firefox will upgrade your version to the most recent that supports XP and put you on their esr "channel", meaning as long as Firefox continues it's esr program, it will upload to you the newest version of Firefox that supports 32 bit XP.