Power & Source of Big Ideas

Can anyone help me by describing the "manual" process to update from 16.04 to 18.04? I have read https://www.zdnet.com/article/how-to-up ... -to-18-04/ but not sure if it applied to NanoPi Neo Plus 2. Thanks, Jon
It would be really helpful if the NanoPi Neo Plus 2 board included a power management chip and a battery connector. support for a 3.7vdc li-ion battery that both charged the battery and switched to battery power if the external 5vdc power is disconnected or fails. this would allow the board to conti...