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hextag
Possible to Clone VAG Audi MED17 EDC17 ECU with Hextag?
Can Hextag clone Audi MED17.1.1 ECU? Does the immo and everything transfer or is there something i should worry about?
Bench mode no go, error 16a-
Boot mode getting this error
Suggestion:
For some yes , VAG with OTP protection forget it. Forget clone method but several people can transfer those things into another ecu.
Hextag can transfer data but VAG ecu’s have immo in OTP portion so even after transfer the data from one ecu to donor, have to sync immo in donor ecu or make immo off from donor ecu flash to work.
The OTP sectors are in the processor, not the eeprom. Swapping eeprom DOES NOT work for med17. You need to transfer/modify data.
Need flash and eeprom of both ecu’s to generate new eeprom with valid immo-data and write it back.
In VAG Group MED17 Or EDC17 ECU never one to one clone at any tool. Best solution is to transfer immo-data from original (mac-cs -vin and pin … ) to donor ECU and start your car.
https://www.obdii365.com/wholesale/hextag-programmer-with-bdm-functions.html
How to Recover the original BMW CAS with Hextag?
My CAS3+ failed while trying to downgrade- how do I recover data / restore with Hexprog? 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 make backup, even if something happened OBD without backup you can repair it in hextag.
How do I recover data/restore with Hexprog? What is the procedure to repair CAS corruption? under what option?
Hextag has an option for this can change from programming mode to normal mode probably happens when downgrades fail. You can read eeprom and check CAS in programming mode or normal mode. edit option in eeprom and you need to write another flash also.
If you have autohex you can check on it first if can solve it OBD itself. When it comes to Hextag you can check from edit option in EEPROM if CAS in programming mode or normal mode. If in programming change it to normal and write eeprom back. Also you need to change Flash.
Try to recover the original CAS with following steps:
Find good flash file from same part number CAS. Write it to CAS using hexprog.
Read original eeprom, change line 0F90 (first three columns) to DA AA 55, write back.
Perform individual programming (using key programmer on bench).
CAS should be alive after this.
These step should bring the CAS back to life. Now you can learn new key (sometimes you don’t need DME ISN) but it may ask you for ISN which autohex ii and some other devices can extract DME ISN for you.
Review:
With HEXTAG, successfully repaired a corrupted CAS 3+ after a bad ISTA/P update.
https://www.obdii365.com/service/repair-corrupted-bmw-cas3-data-with-hextag.html
