KT200 VW PCR2.1 Unlock by OBD Car Not Start Solution

Problem:

VW PCR 2.1 polo 6r KT200 write unlock by obd but car don't start. ID good with flash unlocked. Help me?

Solution:

Bad file. file was bad because of checksum....always write ORI file back to test this.use winols to correct checksum.

Feedback:

i solved with Lsuite checksum.