Use the original USB cable. Avoid "charging-only" cables.
A true fail unlock tool does three things:
If this script fails, your debugger does not have power control. The most common hidden failure: The CPU is in deep sleep ( WFI ). Your tool sends a halt command, but the CPU ignores it until a hardware reset pin toggles.
The error "writing flash programmer... fail" is not a death sentence. It is a negotiation. The chip is saying: “You do not have permission to write here.”
Use the original USB cable. Avoid "charging-only" cables.
A true fail unlock tool does three things:
If this script fails, your debugger does not have power control. The most common hidden failure: The CPU is in deep sleep ( WFI ). Your tool sends a halt command, but the CPU ignores it until a hardware reset pin toggles.
The error "writing flash programmer... fail" is not a death sentence. It is a negotiation. The chip is saying: “You do not have permission to write here.”
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