[GUIDE] Change CyanogenMod 12 Lock Screen Wallpaper topic

THIS GUIDE IS TESTED WORKING ON CYANOGENMOD 12 WITH THEME ENGINE ONLY.
Please do not post that this isn't working for you unless you have a ROM which has the CyanogenMod 12 theme engine installed.
It should theoretically work on all ROMs based off CM12 like CyanogenMod 12, GearCM12, AICP, Vanir, BlissPop, CyanideL, Candy5, Euphoria, Resurrection Remix, Screw'd, Validus, Team UB, Dirty Unicorns.

I noticed a lot of posts on the threads of almost all ROMs based off of CyanogenMod 12 asking about how to change the lock screen wallpaper without using an apk or anything in the theme engine. So I did some experimentation and have found a way to do so, so I'm gonna share it with you.

Please follow this carefully step by step or this may not work for you. If you ARE on a ROM based off of CyanogenMod 12, and you did these steps correctly and it still didn't work (I don't see why it wouldn't), post your device information and ROM details and I'll look into it.

Let's get started.

Things you'll need:
1. A ROM based off of CM12 (duh)
2. Root access.
3. A root file explorer.


Here's a video tutorial I made to make things easier to understand:



Here are the steps:

1. Download/place the wallpaper you need in your internal/external storage and remember it's location.


2. Download, install and open a root file browser. (ES File Explorer recommended)


3. Grand the file explorer root access.


4. Go into the root directory and then go to data/system/users/0.


5. Here, rename the "keyguard_wallpaper" to "keyguard_wallpaperOLD" to keep it as a backup.


6. Now navigate to where you saved your new wallpaper, and rename it to "keyguard_wallpaper" REMEMBER TO REMOVE THE FILE EXTENSION.


7. Now move this file to the location mentioned above (data/system/users/0/).


8. Change permissions to -rwx------


9. Lock the phone now, and enjoy your new wallpaper. :D

F.A.Q.
Q: How do I revert to the old wallpaper?
A: Simple. Just delete the new one, and rename the backed-up wallpaper.

Q: Will this work on ROMs other than the ones based off of CM12?
A: I do not know. I've only tested this on Resurrection Remix 5.3.1 which is based off of CM12 on a S4 GT-i9500. Give it a shot, and if it worked, let me know so I can update the OP.

Q: Will this cause any bricks or bootloops if I mis-rename the files?
A: Absolutely no. It shouldn't. Never bricked mine. It just displays the last known wallpaper I think.



Watch the video if the steps seem complicated to you.

Enjoy your new wallpaper. :good: