Unlock pcr 2.1 

Now i have ori tools...i use kess too for old ecu is good tool!

I use 13,5v and 2 amp...after unlock remove resistor and put on car...then you can read/write obd

@@danielgatan4196 Thanks for this video, After I have applied the patch I have checked the ID and it still says the ecu is locked:? have you come across this before:?

Hi! I use 470 and 1kohm resistor ...and i use 13,5v for this ecu. I have adjustable power supply max 2 amp

@@danielgatan4196 Hi, why you use resistors in there? is that because it says in KESS manual for this type ECU?

@@samozvanecc Yes.

You can do obd...but only after unlock

@@danielgatan4196 I can read, I get the file, my friend, I write, but the tool does not work accordingly.

@@danielgatan4196 If it's locked, won't it read or write?

No..just unlock in bench and then you can read/write by obd.

Yes, only unlock on bench...then read/write obd

@@danielgatan4196 if i dont unlock can i write a modified file throught boot

@@viridian6903 No

Yes.

Which its beter to use unlocker sw or kess