Nordic nRF52832 BLE MCU uses SoftDevice debug lock. nRF52 decryption unlocks it to recover firmware.

nRF52832 Protection:
- APPROTECT mechanism blocks debug access.
- SoftDevice enforces debug port lock.
- Flash readback is prevented after lock.
- RAM and FICR registers are protected.

nRF52832 Decryption Methods:
1. Voltage Glitching: glitch VDD during APPROTECT check.
2. Clock Glitching: fault debug controller.
3. Decapsulation: read silicon die directly.
4. Side-Channel: power analysis during unlock.

nRF52832 is used in BLE beacons, wearables, and IoT sensors.