Foxflash ECU programmer has been confirmed can successfully unlock VAG Simos/Siemens PCR2.1 without opening the ECU. Safe read/write/unlock on bench is the most proven way, OBD depends on VR being available. That’s ideal saves having to solder the resistors on … Continue reading Foxflash Unlock VAG SIMOS PCR2.1 via OBD/Bench- Success