Here is the instruction on writing stately PCR 2.1 with Fgtech Galletto 4 V54 master clone for those who do not have original tools. All you need it’s UPA USB and Galletto V54 China clone!
Credits to Mr. mercas who made this tutorial.
On forum exist a lot of threads with bricked ecu’s because Galletto,Kess or other tool don’t unlock ok every time this ecu on bootmode,
or ecu was already unlocked by another tuner.
This steps were tested by 3 PCR ECU’s from 3 different years and all was ok.
How to write safety PCR 2.1 with Galletto v54 China clone!
1. Read flash OBD with fgtech v54 clone;
2 Open ecu Carefully!! and put it back to car to test if you don’t destroy it when you open;
4 unlock with program PCR2.1-Simos8 Unlock 1.1 25640 eeprom (Search it on MHHAUTO forum);
5 solder eeprom back;
6 start car;
7 go with VCDS look variable Measuring block 497;
If production it’s locked;
If sample then unlocked ;
8 read flash again by obd(it will be the same like first read);
9 modify files and make checksum with winOLS;
10 write flash by OBD, if fail, write original without read id data;
Here is a manual way how to do the unlock in Winols:
open the eeprom (25640) on winols
choose the decimal mode
and 16 bit
go to the address 24A
24A 24C 24E and 250
we will calculate this 4 value
you will 65535 – 24A value
write it to 24A
for example on my file 17052 is 24A value
65535 – 17052
you will write 48483 to 24A
the you will do it same for 24C
65535 – 24C = will new value
for example in my file 34224 is 24C value
65535 – 34224 = 31311 is new value for 24C
you will calcuate this 4 value
and save and write the file
after do that
to be sure
calculate the all 4 values ori and tuned.