Hi im using this , but when i use it on Firefox3 says update available ive downloaded updated one installed it but always says it at the top of FF, anyone know why thanks MD edit this works never mind 1. Start Firefox. 2. Select "File -> Open File". 3. Browse to the KeyScrambler installation folder (by default "C:\Program Files\KeyScrambler"). 4. Open the file named "keyscrambler.xpi" and follow the prompts.