Open ES file explorer. Click on menu. Click settings. Scroll down to root settings. Enable root explorer and Mount file system. Change home directory to /. Hit back arrow. Click on the star. Then select HOME. You will see /system.Thanks. As I mentioned in the OP, I am rooted. I was using ES File Explorer, but it only had read access (is there a way to change this?).
Unfortunately I do not have any other android device to download with, and I would want to be able to update the apps without constantly sideloading.
Thanks for the reply.