hi Andrea fgtech original the ago in the obd reads the virtual file automatically and makes you rewrite it in peace
on auto new type golf7 does everything himself automatically in the obd simply follow the instructions
the problem is sometimes we create it ourselves going to touch the curves at random, especially fap egr code etc.
and incasinano the ecu and not start more
in that case, when you must smucinare better to always do a becup in the boot , why say these things if you see the damos you realize that immediately
after a map there could be a swict or else and if you touch that byte will corrupts the eeprom that's why it sometimes do not start more
my advice is if you do not know to touch the curves or you're not sure you better to make a becup in the boot
hope that was clear
however, alientech, and is an excellent product, I know I have also worked with the original