Have tried to flash EDC16 with KESS V2 clone,but i can not see anymore
HW and VIN from the EDC16 ECU and the car not starts.Then worked with Fgtech Galletto
v54 master,all EDC16 on BDM without any problem

Here is what i did with the EDC16U34 from VAG ECU, using Fgtech galletto v54

The BDM pad here

Now carefully again with the adapter springs drop and secure frame

Connect FGtech galletto correctly

Open Fgtech Software

Make sure you have 12v+ feeding fgtech and the intermediate adapter

Switch the intermediate adapter ON

Red LED will illuminate

Click on Select Driver-BDM/Jtag-Connect

If everything is ok, the green bar will start loading and finally display ECU info

When finished, turn off the switch and exit program

Same procedure applies to all EDC16
In short

we need flash the ECU with BDM if we have full flash for this ECU

open ECU and read all with BDM

must find full flash hw and sw version for this ECU

When write chose flash,not all(eeprom and MCU not need)