How to Use FireFox With User Agent Spoofer on Boost Mobile. Instantnumbers April 20, 2018 17:02 Updated Follow How to Use FireFox With User Agent Spoofer on Boost Mobile. Watch a quick video walkthrough!https://youtu.be/URy2GNySBlw Related articles How to GPS Spoof on Boost Mobile How to Change IP on Boost Mobile How to Connect to Vysor to access Android Smartphone. What are some of the apps I can use for posting? How to use Chrome UA (User Agent Spoofer) Comments 0 comments Please sign in to leave a comment.