Audi edc17c64 clone

Here's what I can see from your files:

Original ECU:

• SW: 1037548918 / P866E7PO
• HW part: 04L906021FQ
• VIN: WAUZZZ4G9FN046511 (Audi A6 C7, 2.0 TDI, ~2015)
• Bosch base: EDC17 CB.06.07.02 C50.00

Donor ECU:

• SW: 10SW000865 / P866E7PO
• HW part: 04L906021FQ (same)
• VIN: WAUZZZ4G7FN052937
• Same Bosch base

Both ECUs share the same HW number (04L906021FQ) and the same Bosch platform suffix (P866E7PO), so they are hardware-compatible. That's the important part.

Problem with the donor EEPROM: Your SHTC1797eeprom file starts entirely with 00s — the first critical blocks are zeroed out. Either the read failed or the donor was already virgin/cleared. The IMMO/VIN data does appear further in the file, but compare this to your original EEPROM which has proper data from offset 0x00. This needs to be verified before proceeding.

For a proper clone you need to transfer from original to donor:

• VIN
• IMMO / SK (secret key / component security)
• CS-ID (coding)
• Optionally DTC / adaptation counters

Since the donor has a different SW number (10SW000865 vs 1037548918), the cleanest approach is to write the full original flash onto the donor hardware, plus the original EEPROM content.

Before going further, I need to know:

• Re-read the donor EEPROM and confirm whether it's genuinely blank/virgin or if the read was bad.
• What tool did you use for the bench read?
• Is the donor a used unit from another car or a new/virgin unit?

If the donor EEPROM is truly virgin, the clone is straightforward — write original full flash + original EEPROM to the donor. If it was a bad read, you need a clean re-read first.

Solved!!