12-30-2021, 12:50 PM
I've been working under the assumption here that the phone was at least booting up the Jumpdrive image from sd card (Jumpdrive logo appears on phone screen). If not that would 'splain why you're not getting any action via the USB connection. That doesn't happen until the Jumpdrive image is booted up.
If it's the case that even the Jumpdrive sd card is not booting the factory test image would likely not run either.
If it's the case that even the Jumpdrive sd card is not booting the factory test image would likely not run either.