In my experience, you can't root without having a custom recovery installed either TWRP or CWM and you need to overwrite system files by using a computer. I haven't seen any way to root any device without using a computer. It depends on what Optimus you are using. There are several variants of the LG Optimus including the LG Optimus S for Sprint, Optimus V for Virgin Mobile, Optimus C for Cricket, and a few more. ---- Also, Javascript is enabled by default on Firefox so there's no need to enable it unless you went into about:config and disabled it but I don't think that happened since normal users don't know about it. ---- Since this is an off-topic question and not related to Firefox but rather your device, I'm going to close it. I would be happy to help you off of this forum if you would like. My contact info is in my profile page *Here's a quick link --> [/user/moses] Email is the best and quickest way to reach me. Before you do that, I suggest you go to a website such as xda-developers.com or androidforums.com