My apologies, I’ve been really busy with the day job and other personal projects.
From what I read/recall a long time ago, there are easier ways to revive some of the older platforms it seemed like the plus was difficult one. You may find information out there as to how to recover your device without this risky method.
I don’t know if the edge is remotely similar to the plus, but here is what worked (general overview), FYI this is risky and can kill your device:
- Find the serial port on the board (if it has an exposed one).
- Determine the pinouts.
- Connect to it using the correct voltages.
- You may need to play around to find the serial port settings (baud rate etc)
- Once there you can interrupt the boot process to do recovery/reflash.