Help with reloading Kodi to 17.3 after factory reset to my 6.0

I had no problem updating to 17.1 a few months ago by following the instructions but the instructions for updating to 17.3 lead to creating some problems. I tried different things to try and get the 17.3 download to work on my android box 6.0 but was unsuccessful. I did a factory reset and now after downloading Kodi 17.3 I click on install and all I get is “Kodi 17.3 not installed”. If someone could please help me return my android box back to Kodi and run 17.3 I would really appreciate it thank you Calvin