Hello everyone, I come today to ask for help for a calculator unlock. I try as much as possible to manage on my own, or at least to search well on the forums or others but today I dry.

Small presentation:

Vehicle: 1.6 Tdi 105 cv Cayc 2012 with a simos pcr 2.1

Equipment available:

Kess v2 Chinese
Ktag Chinese
xGecu t48
vcds Chinese
Alim stabilized 12 v 4A
Soldering station
....

For the record 3 years ago I did an eeprom reading + flash with the Ktag, unlock the eeprom from the ktag path then inject the flash remapped in Obd. No worries until 15 days ago when I drove normally and suddenly Christmas tree. In degraded mode with a yo-yo engine speed.

After a passage to the VCDS error 0606 processor fault calculator (checking all the masses, nothing to report so opening the calculator which today presents as traces of "heating" at the CPU level.

From there, I decide to buy on lbc a simos pcr 2.1 cayc calculator, once received, reading eeprom with ktag, then path of the eeprom, once mounted on the car after a calculator ID always locked, from there I tried with the kess v2 from the unlock ecu tool, same result. So I decide to unsolder the eeprom which is an atmel 25640 makes a reading and makes a comparison with that output under ktag, the 8ko file is identical from ktag or from xgecu.

I decide to "test" the eeprom by replacing everything with zeros to see if no sector is corrupted. Everything goes well.

I decide so to take my 8kb eeprom file is to pass it through the pcr 2.1 unlocker 1.0 software, the operation is successful so I resolder the atmel on the calculator, redo an Id from kess which still sees the eeprom locker.

For those who will tell me that I did not respect the directives for the unlock I specify that yes I used a resistor that is indeed 1k ohms on the gray crocodile clip for the boot, that the blue crocodile clip is well connected to the CNF1 pin, and that pins 5,87,92 are indeed on the red wires in 12v, that pin 1 is indeed on the GND and that pin 68 on the can H and pin 67 on the can L. And I soldered my 470 ohm resistor on the pins of the ecu.

This is a stabilized power supply that outputs stable 12v, I tried at 13v also same result. The resistors, we were tested in the multi they output 470 and 1 k ohms.

From there not being able to unlock the calculator I decided to buy another one on lbc and after all the same steps I am still stuck.

I thank in advance all the people who will take the time to read, advise me and help me.

have you made ID with kess before take out ecu to unlock?

because if ecu was unlocked before and you did unlock with software you lock ecu back, you can do unlock operation only one time and only after checking the real status of ecu

the other possibility is that your unlocker is not working

anyway the best way is unlock with kess or ktag only after check via obd the status