By now, you need to do this when you want to upgrade the firmware. In the future, we will add a bootloader for it, then you can upgrade the firmware without jumping.
Thank you very much for you prompt reply.
In order to make sure that jumper connection are correct, could you please share some pictures on how I should proceed.
Sorry, but I am new in the field.
I saw your picture, but it’s not clear how we should make the connection with the jumper.
That is why I ask you if you can provide me a more detail pictures, please.
There is another couple need to be connected with a jumper too, you can do according the above picture shows. In this picture, we have connected them already.