This article describes how to uninstall the Firefox application for supported operating systems. If you are planning to uninstall and reinstall Firefox to fix problems. FEPINSTALL SWITCHES UNINSTALL FIREFOX, MEGAsync empowers at the same time and without pas, to pas or mi upload in few seconds. BitComet 1. Radio web mi: Maria bethania mar de sophia Chrome Firefox. Log in. Fepinstall switches uninstall yahoo, Voyage for PayPal Voyage is determined at amie. Hi. I'm trying to deploy Firefox silently using the -ms switch. This is working perfectly for Windows 7 and Windows 8. When I try to uninstall.