Firmware upgrade in GPS RTK Here 2 without USB or SW connectors

Hello, I’m new to the forum. We are developing a rover with autonomous precision navigation. We got a pixhawk 2 and the GPS RTK Here 2 (Base + Rover).
But neither the side usb connector nor the side selector switch came to Here Rover GPS (see image) I would like to know if anyone in the forum knows how to update the firmware because we tried in many ways but no success . Thank in advance.

1 Like

here 2 or here+

here 2 is not rtk?

Here+ GNSS RTK. Sorry.

Also interested in this question.
Tried to do as described here Here 3 Manual - CubePilot
but unsuccessfully. Here v3 firm

Figured it out myself. Later I will issue a FAQ on how to do this.