I looked into CM for my phone , but it looks to be impossible . My SCHi 535 was manufactured 08092014 , and it came with 4 . 4 . 2 . WARNING This guide is for advanced users and does not come with support . It is provided as a means to install CyanogenMod . A working adb connection as well as adb being in your PATH is required for this guide and users should not proceed without this . Additionally , you must be a 4 . 2 . 2 or older build or this will not work . In fact , if you try to use this method on a newer revision , you will almost certainly brick your device . Seriously don ' t try it . Downgrading won ' t work either . If you ' ve updated , a qfuse is already tripped and any attempt to downgrade will also result in a brick . Yeah . I didn ' t know anything last year about Kingo ES File . This is my 1 st smartphone , I clung onto my LG Env 3 forever , lol .