Carprog 8.21 is good tool for ecu program,and also works well in opel airbag.And following is a Carprog 8.21 China Rework guide to make the clone carprog 8.21 to be real same as original carprog ecu programmer.Just for sharing,hope it will be useful.
Rework the Carprog PCB:
Change the ICs from 74CT125 to 74HCT125M
And also add 25V 47uf Cap
like this and also ,you need rework the back PCB.
If you want more information or pictures of rework,you can contact us! 😉
After rework,you can open the software again,and try to change mileage function,you will find it works now
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Tags: Carprog 8.21 User Manual, How to Rework Carprog 8.21