Unable to install twrp 'cause FP2 not recognized from Computer

[Volker]

Did you have a look at e.g. this topic?

Fastboot on Fairphone 2

Hi there, Trying to install Fairphone Open with Windows 10 on my PC. A very simple action is required: “Boot your phone into fastboot mode (hold the Volume Down button while you power on the phone), it will display a still screen with the Fairphone logo.” After starting the flashing script. I get “No device found in fastboot mode”. From the Windows 10 device manager I get: “The drivers for this device are not installed. (Code 28) There are no compatible drivers for this device. To find a dri…