: While "Bench" mode is generally safe, errors during writing (especially with unstable power supplies or poor clones) can "brick" an ECU, rendering the vehicle non-functional.

Yes, but with caution. Version 1.20 introduced a that prevents writing to the boot sector. For novices, always:

Additionally, the official developer of PCMflash (and authorized resellers) refuses to provide support or activations for counterfeit dongles. Sending an activation file from a non‑original dongle can result in the key being permanently blocked.