If ur g2 is 4.2.2 do NOT blindly follow this guide - it is not well written. If u follow it to install autorec 2.7 on 4.2.2 the installation seems successful but it may soft brick ur g2 when u use autorec to backup etc. that is what happened to my g2. It took me a lot of time to bring it back to live Use lgflashtool to upgrade to 4.4.2 then use this guide for following tasks. Also, u need to enable 'allow installation from third party' to install autorec in the way in the guide