It is still failing for me and I don't think it is the cable. This is a screengrab sequence of everything I did on my latest attempt:
There's a slight mistake with the instructions - to invoke the special boot menu it is holding Power + VolumeDown. The combo Power + VolumeUp does nothing on my OnePlus 5:
Then finally in Fastboot mode:
Started ub-ports as root + sspecifying the OnePlus5 config file, Justin Case,
# ubports-installer -f /home/paulo/Desktop/cheeseburger.yml
Installer automatically detects the mobile, I check all checkboxes:
Installer asks me to continue (and gives me the wrong? instruction to Power+VolumeUp):
After reboot the mobile just hangs:
I notice that the mobile is still responsive and is in "fastboot" (whatever that means), so I make is boot up the latest TWRP:
root@paulo-B450-AORUS-ELITE:~/.cache/ubports# fastboot devices
957ec7db fastboot
root@paulo-B450-AORUS-ELITE:~/.cache/ubports# fastboot flash recovery /home/paulo/Desktop/twrp-3.4.0-1-cheeseburger.img
target reported max download size of 536870912 bytes
sending 'recovery' (33412 KB)...
OKAY [ 0.792s]
writing 'recovery'...
OKAY [ 0.314s]
finished. total time: 1.106s
root@paulo-B450-AORUS-ELITE:~/.cache/ubports# fastboot boot /home/paulo/Desktop/twrp-3.4.0-1-cheeseburger.img
downloading 'boot.img'...
OKAY [ 0.797s]
booting...
OKAY [ 10.094s]
finished. total time: 10.891s
Once TWRP boots up, the installer recognizes it and reacts:
Following the instructions:
Instead of following directly the instructions, I pressed back, back, then Reboot, then Bootloader:
Installer recognizes the mobile in the Boot menu and issues a reboot:
However, once again the mobile doesn't progress from the Bootup image:
Once again I detect that the mobile is recognized by Fastboot, so I reboot it to boot loader then start in Recovery Mode:
root@paulo-B450-AORUS-ELITE:~/.cache/ubports# fastboot devices
957ec7db fastboot
root@paulo-B450-AORUS-ELITE:~/.cache/ubports# fastboot reboot-bootloader
rebooting into bootloader...
OKAY [ 0.000s]
finished. total time: 0.050s
root@paulo-B450-AORUS-ELITE:~/.cache/ubports#
Installer recognizes the mobile after restarting in Recovery Mode:
However now it always fails with something which I'm suspecting is not the cable (and UBports is now loaded):