Xhorse MultiProg Audi BCM2 D70F3239 Chip Data Erase Failed

Problem:

Trying to clone very old bcm2 in Audi A5 with CPU 70F3239 using Xhorse Multi Prog. Connected wires, read data, all is ok.
But when i try write the new data to the donor unit i have fault.
Chip data erase failed! Error code: 00000005 Parameter error, please check that the data format is correct.
I didn’t change any data. Even i read the data, and immediately try to write the same data what i just read in the same module, i get the same fault.

Here is the clue.

This error is not about data format it is erase protection or wrong mode.
D70f3239 needs correct boot mode and sometimes security unlock before erase.
If you can read but cannot erase or write then chip is still locked.
Also check power and wiring very stable because erase needs good voltage.
Try different method or manual mode if available not auto.
Sometimes you need external programmer for these older bcm2 units.

The chip is not properly unlocked before write. Multiprog is trying to erase without full unlock that is why you get error 00000005. Use correct boot mode and check cnf1 wiring. Unlock security first then write in manual mode. Stable power is very important. If still same then use vvdi prog or orange 5.

 

 

User report:

Solution found. Xhorse have wrong configuration/parameters for this chip. Writed to support for quicly update. When choose D70F3237 chip and try write in D70F3239, writing work properly.