Hi Tim, How much experience do you have? If this is your first time porting to a device, then I would suggest to begin using halium-13 first. I work on my first port (another Lenovo tablet), too, and it took me a long time to just get the kernel booting. The Andorid version begins to matter when the device boots so far that you can ssh into it. At that point you can worry about integrating halium 14. On the other hand, if you are experienced with porting then follow the advice to ask on the telegram channel how to base your port on halium 14 from the beginning. Kai