⬆️Update

Backend

To update the backend you would have to just follow the Admin Panel section. After deploying the update the new assets will replace the old ones. Keep a backup of your old admin panel source code just in case something goes wrong.

Apps

With each new version, app codes are usually subject to updates so it would be better if you had your Version Control system in place with one branch being the files downloaded from Codecanyon and the other one your customizations. This way you could release with each new release that comes and resolve conflicts easier.