Original file

Bosch MED17.5.21 04E907309A / 1037533278

An original (stock) flash read of the Bosch MED17.5.21 control unit, hardware number 04E907309A and software number 1037533278, 2,560.00 KB. The file is supplied exactly as it was read from the unit, byte for byte; nothing is changed in it.

Technical data

Vehicle
Engine1.4 petrol 140PS
Fuelpetrol
Displacement1.4
Power140.0PS / 103.0kW
Control unit
Control unitBosch MED17.5.21
ECU makerBosch
Hardware number04E907309A
Software number1037533278
File
File typeOriginal flash read
File size2,560.00 KB
File keyb3f4a1ec2ebf9857
Price€15

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 04E907309A and software number 1037533278. 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

HardwareSoftwareVehicles
04E907309A1037533204Seat Leon
04E907309A1037533205Volkswagen Golf, Volkswagen A3 1.2 TFSI, Volkswagen A1 1.2 TFSI
04E907309A1037533215Seat Leon
04E907309A1037533216
04E907309A1037533279Audi A3, Audi A3 1.4 TSI
04E907309A1037533281Seat Leon, Seat A3 MAX !! 1.4 TSI, Seat A3
04E907309A1037533767Volkswagen Golf, Volkswagen New Octavia, Volkswagen Golf 7
04E907309A1037533768Volkswagen Leon, Volkswagen Golf 7, Volkswagen Octavia

Bosch MED17.5.21 original files

The Bosch MED17.5.21 unit page