How to Clone BMW Bosch ECU MG1 with Hextag?

The newly developed Tricore module enables Hextag programmer to clone many ECUs without opening ECU (factory mode). Here’s an example of cloning Bosch ECU MG1SC003 in factory mode.

Main steps:

1.Backup original ECU data

2.Backup donor ECU data

3. Clone ECU

1.

Open Hextag software

Select BMW->Bosch MG1CS003 SPC5777 ECU->Factory Mode (No Need to Open ECU)

Press Writing

Check MG1 wiring connection
Follow wiring to connect ECU with Hextag and power adapter without opening ECU
Press ECU Info

Hextag shows some important info like ISN in BMW
Make backup for both ECU for precaution.

Reading very fast

Read data completed. Save original ECU data

2.

Now we connect the donor ECU and make a backup
Check ECU info
Press Backup

Save donor ECU data

3.

We will make a “Restore”

Choose original ecu data
Writing is slower than reading. Depends on flash contents

Write completed.

Check ECU info and check ISN, should be the same as original ECU.

Done.

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http://blog.obdii365.com/2020/03/08/hextag-clone-bmw-bosch-ecu-mg1/