Back when I still used Open OS this was not possible with modifications (in this case OpenGAPPS). If that hasn’t changed the following is the guide you need to update:
thanks for your very quick answers. I didnt really lose data, as i backed it up before but i’ve lost time (reinstalling and setting everything is at least 2H). Actually i followed both guides and didnt pay much attention to AnotherElk’s warning…
so, if i completely follow @freibadschwimmer’s guide, i should not have data loss? Can someone confirm please?
I guesss the difference is that he doesnt wipe in twrp before flashing…Does it make sense?
At least that was true when the guide was written and I haven’t read anything to the contrary since. Though there is always a slight chance that something will go wrong.