Tags: Hextag

 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…

 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…

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