CG FC200 Boot Unlock and Read/Write for VAG MD1CS004

Successfully locked a Volkswagen Bosch MD1CS004 H80 TC298 locked ECU using CG FC200 programmer.

In boot mode using the DME unlock adapter + new BD25 cable for FC200.

The DB25 cable is a must for locked ECU. The new DB25 adds a GPT-4 wire for encrypted ECUs. The 0-ohm resistor needs to be desoldered.

Unlock ok.

Read ok.

Write ok.

Checksum correction with FC200.

Everything is fine. The car started and is running after flashing the modified file.

Images attached: