RUN THIS SCRIPT AT YOUR OWN RISK
This is for addons signature expiry of firefox in 2025-03-15. Not recommended unless you understand the security risks.
If you are not running Firefox ESR with xpinstall.signatures.required
set to false
i.e. normal firefox, then you have some steps to follow first to tweak your firefox, your OS's methods may vary:
This script is to be run in firefox developer console.