If you are having problems copying 360 wallpapers directly into LG360Wallpaper.apk then do this:
Change permissions to read/write and from root: system/priv-app/lg360wallpaper copy LG360Wallpaper.apk to sd card
Then move LG360Wallpaper.apk from sd card to your PC - rename to LG360Wallpaper.zip then open placing new 360 jpg's in assets/ images
Rename back to LG360Wallpaper.apk and then copy back into root: system/priv-app/lg360wallpaper - then re-install lg360wallpaper.apk
This is the long way but I can guarantee this method works!
Also these jpg's are huge so I deleted the ones that were there and copied only the two I wanted and renamed them back to custom_01.jpg etc