[linzh3054]

hello Sholander, 

as i understand CoreElec is linux based KODI release.
it seems i can only get 540P resolution if i run NF addon on a AOSP widevine L3 box. is it possible to get 720p on a AOSP box?

Thanks 

Yes, CE is Linux based, and Kodi 18.5 runs perfect on stable CE 9.2.1 version.
I cannot say nor guarantee if your box will be able to run 720p NF streams. Good thing is that you can try it without loosing anything from Android, as CoreElec is installed on uSD card.
I get 720p NF streams on my S905X and S912 boxes (both have widevine L3 in Android) without problem. Your box, if you can install CE on it, should have no problems as it uses S905X2 SoC...
Also, on my both mentioned boxes HBO-Go addon works perfect in 1080p resolution. 

Hi Sholander, 
Thanks for your reply. maybe i didn't make myself understood. 
i have a S912 box, i have also succeed to get 720p NF streams if i boot to CoreElec 9.2.1. However, i don't want to switch my system to CE
i wants to run KODI on android system. so my question is: is it possible to get 720p NF streams if i run KODI on a AOSP box?