If you enable and connect through either UART 2 or the USB, then you can re-enable UART 1. Otherwise, you will have to write an Open AT application that enables UART 1 based on an event (e.g. GPIO dropping low etc).
If you enable and connect through either UART 2 or the USB, then you can re-enable UART 1. Otherwise, you will have to write an Open AT application that enables UART 1 based on an event (e.g. GPIO dropping low etc).