Um232r is integrated circuit , usb serial , it has 24 pins ,
A, um232r DB7 to atmega168 1.
B, um232r DB5 to atmega168 19.
C, um232r DB6 to atmega168 17.
D, um232r DB3 to atmega168 18.
And I selected nano atmega168 in the arduino programmer,
and port number all from tools in programmer.
I used the usbasp,
And under the tools I used Burn Bootloader.
