Sorry but the two image are not visible previously
Hi,
I contact the lattepanda support for more information and I obtain a photo of resistor (see below).
This is very small and impossible to remove and soldier (see below the screw have 2mm dimension ahahahha).
We finally use RS-232 port or usb with another external converter because the proposed solution it's not possible to use.
I hope that in the future board the Lattepanda team solve this issue and set this mode as factory.
Best regards,
A.C.
Ok, thanks for the support.
I try it tommorow and reply you.