**** Update: Go to about:fennec -> Press Check for updates. Download and install it.(Normally, a notification should appear when a new build is available)
**** Uninstall:Go to home screen for you phone -> Press Menu button -> Settings -> Applications -> Nightly/Aurora/ Firefox Beta/ Firefox -> Uninstall
** Step 2: Go to [www.litmus.mozilla.org Litmus ] (make an account is if you don't have one). Choose which of the test you wanna make (the test runs depend on the build you have installed).
*** For Firefox 4 and Firefox 5 please use: Fennec 2.0 Catch-All Test Run
*** For Firefox 6 : Fennec 6.0 Catch-All Test Run