I have a serious problem with my fairphone 2, which ran fine with the lastest Fairphone Open Release until yesterday. Yesterday unfortunately I deactivated the usb debugging feature by mistake and forgot to turn the feature on again. When I later restarted the phone, I was not able to start it anymore. I am also not able to access twrp anymore. The only thing that starts automatically when you turn on the phone is the fastboot mode.
When I connect the phone in that mode to my Computer (Linux Ubuntu 18.04) the phone is recognized perfectly when I type “fastboot devices”. I am also able to flash /boot a twrp image without errors. Nevertheless, twrp will not start regardless whatever i am trying to do. My guess was that it could have to do something with the disabled usb-debugging on the phone.
I am sitting here for hour now to find a solution and have read each related post I could find here with no result. I would very much appreciate any help or hint that helps me to bring my phone back to life. Thank you very much!