Here comes the common problem with BMW CAS3 key programming via OBD: BMW X1 2011 CAS3++ istap now cannot turn on with the working key. I downgraded CAS3, did put battery support on (GYS Flash) but Wifi cut out during update. And it failed now no ignition. Here are the working solutions for those who…
Tag: Hextag
How do I recover BMW CAS3 data with Hexprog?
Sometimes BMW CAS3+ eeprom data is corrupted after bad reflash/downgrading and there is no communication with it and no ignition on car. Many devices will kill CAS3+ when downgrading via OBD, Xhorse VVDI2, Yanhua ACDP, IM608, AVDI even Autohex II without a sufficient power supply. If done via obd, 14.2 always with maintainer. If data is corrupted, no need to…