ECU may be locked by a previous tuner or is not supported by your current module set. Solution: Verify module compatibility with the specific ECU hardware ID. Some ECUs may have been "locked" by previous tuners and require different access methods.
: You must use a J2534-compatible interface, such as the Tactrix OpenPort 2.0 or Scanmatik 2 Pro , to connect your laptop to the car's OBD2 port or directly to the ECU on a bench. pcmflash 120 download work
Ignore the “free download” noise. Purchase a genuine PCMflash interface from a reputable dealer. Then download version 1.20 from your customer portal. Install with antivirus off, run as admin, use a stable power supply, and you will have a reliable flashing tool for years. ECU may be locked by a previous tuner