Volkswagen Bosch MED17.5.21 04E907309D / 1037546961

Technical data

About this file

Typical uses: restoring a control unit to its factory software after a failed flash or a corrupt memory, a clean base before any change, comparing a read of your own with the original. The checksum is the one of the read; your programmer or the CARTESIAN app corrects it after a change.

In CARTESIAN this original file is the base for lambda off, EGR off, flaps off, start/stop off and DTC off, each saved with a correct checksum, and for returning a modified unit to stock.

How to use this file

1. Order with your e-mail address; the download link comes right after the payment and is valid for 30 days.
2. Open the file in your programmer, compare its numbers with your unit and check the checksum.
3. Write it only to a Bosch MED17.5.21 whose label carries the same hardware and software numbers.

Before you write Compare the numbers on your control unit with this file, hardware number 04E907309D and software number 1037546961. A file written to a unit with other numbers can damage it. Not sure? Give your own read to the search above: it is compared by content.

Other pairs of Bosch MED17.5.21

Bosch MED17.5.21 original files

The Bosch MED17.5.21 unit page