6UL Bootloader Recovery

We are using the 6UL SOM on our product. I would like to be able to recover the device bootloader using the console port. Has anyone had any success with this that can tell me which pins need to be pulled high or low in order to use the serial downloader? Or is there a better way to restore the bootloader? I understand that UUU won’t work ?

Thanks in advance !

I’ve had the same problem weeks ago. I used this to recover the bootloader ut it was with the comlete kit so i dont know if its going to fix you: