@lakotaubp To be more detailed, it says: unknown partition 'static_nvbk.bin'
error: cannot determine image filename for 'static_nvbk.bin'

@lakotaubp I tried it with the same result, unfortunately. I get this again - cannot determine image filename for 'static_nvbk.bin'

@lakotaubp I get this "can not determine image filename for "static_nvbk.bin".

@lakotaubp After connecting my phone to the PC, I issued the command "adb reboot bootloader" . I get something like, There is not such a device.
Therefore I put the the phone in flashboot by holding volume down and on/off button. And then connected the phone to my PC.
I could now complete the first part of instructions that covers flashing the firmware update. But I am not able to do the same to the second file, Radio.
I have opened a terminal on the file Radio and issued the command "sudo fastboot flash static_nvbk.bin".

@lakotaubp My PC does not recognise the OPO now. I get this message that there is no device or emulator. I remember even during the installation - in the begenning of that I had to choose the phone manually. I will give a try again during the coming days.

@yadi My remaining question is how to update the firmware. Thanks

I have gone over now to Halium and unfotunately no success. Rebooting and turning on and off of BT does not help either.

@lakotaubp I have tried rebooting and even turning bluetooth on and off, no effect on the outcome.
If I do not get any better clue to solution I will go för the development version. Thanks.

@kugiigi Thanks for your reply. When I push the Connect botten nothing happens at all. I borrowed today even a Jbl Go2 speaker and tried, no success! Strange since it is mentioned in the forum as a compatible device.
By the way, I have no idea how to change between BLE and other alternatives.

@keneda Thanks any way.