retrofit infotainment mib2 high

I've been reading so many threads and it's so confusing trying to find exactly what I need. If anyone can explain in plain English I would be SO grateful!!! So I have a 2016 Leon with the nav + I believe. I'm literally about to retro to the 8" screen (I've read the forums on how to do that so...

I did read about it, but got it myself after I used wizards to convert my unit into a retrofit tired of the Mapcare situation. Obdeleven thinks it has two infotainment units installed :). Bit confusing. The solution I remembered was that you cleared the Android cache for Obdeleven of a 5F...