Hi, You could use the add-on Fresh Start, it will be in your programs add-ons, it will give you a fresh start in kodi in openelec
clearing your data and cache, or go to openelec config and do a soft reset you might lose some data on android side with the soft reset.
Use the fresh start and reboot your box then you will get a fresh start in openelec to put your new build on.
Here is a video showing you how to do it if you go the reset route.