Phoenix uses low-level hardware access. Many AVs flag it as "Potentially Unwanted Program." Add an exception if you trust the source (original GSM forum uploads).
Here is a direct, safe method to get the :
: Charge the phone to at least 60% before starting. A power failure during flashing can permanently "kill" (brick) the device.
No. Flashing resets firmware but does not change network lock (SIM lock). Use a separate unlock code for that.
If you've forgotten the 12345 code, flashing restores the factory default.