Download mode disabled by kill switch on LG G3 I have installed CyanogenMod 13 on my LG G3 (LG D850), but I decided to return back to stock ROM. I download the files, but when I try to install by download mode, it shows a message that download mode disabled by killswitch.

Regarding McAfee's killswitch, I'm using CyanogenMod ROM, and I believe it doesn't have McAfee as a preinstalled app.

How to fix this issue?



I am asking about third method so that I get some real thing to block this so called "kill switch"  :(
This "issue" coused by McAffee (KillSwitch) which prevent hardreset or install a new rom on your phone.

So first, you have to boot up you device, open up McAffee app and disable it or just simply uninstall it if you can. After you will able to install the stock ROM.

Same issue is here.