Use the tool’s "Unprotect" or "Clear Lock Bits" function. This usually modifies the Status Register .
: A critical technical fix for "freeze" errors during programming; setting a "Half Speed" serial flash clock can prevent hardware-level sync failures. FRP & Mi Cloud Bypass writing flash programmer fail unlock tool exclusive
If the DAP unlock fails, the script toggles an external GPIO connected to a digital potentiometer controlling VDD. It drops VDD from 3.3V to 2.7V for 2ms—just enough to cause a fuse-read glitch without browning out the CPU. This is to our tool. Use the tool’s "Unprotect" or "Clear Lock Bits" function