My Xaiaomi mi router 3g firmware update was running an update incorrectly, so I updated it via serial port, but accidentally uploaded the wrong file, so now the router is not available via serial port.
How can I re-flash the firmware? Do I need to solder it? The flash memory is still usable, just I need to be re-program?
What is the solution? How can I get it back into use? It has become a brick and is currently unusable.