AeroPod, PowerPod and Newton

Hi Jhon, I'm thinkng on purchasing the PP Lite as to save some money now and later when better times comes invest on the upgrade keys and in the pitot tube. Will the upgrade keys put the PP Lite at pair with the PP V4?, or does the PP V4 has different HW or FW that the PP lite can't reach with the keys upgrades?
Thank you,
Gustavo.-

Upgrade keys and pitot tube will make PPL purchased now equivalent to PP V4

Thanks John!!