Interesting, can you please take some screenshots how you managed to read ecu's eeprom with vagkcan?
Okay here are my screenshots.
1.
Open vagkcan, select k-line, 01 Engine, and open channel. Then click the Engine Control Unit button.
2.
That brings you to this window, with the modes I mentioned for my ECU.
3.
Mode 1 allows Read EEPROM and Read Flash buttons. Read EEPROM will time out after trying to connect to the ECU. Read Flash just hangs the whole program.
4.
Mode 11 only allows Read EEPROM (after successful read it gives more options, but not Read Flash). Takes about 10-15 seconds to read and then displays it like in the screenshot.