EFILive licensing is based off ECM serial number. Each time you flash an ECM with a difference serial a license will be required, irrespective of vin number.
EFILive does offer a vin license replacement when an ECM is toast, however you need to generate a support ticket on our help desk for us to investigate the issue and determine that the ECM is unrecoverable. during that process you will be asked to submit your EFILive licensing file, provide screen shots as requested, and provide a copy of the invoice to demonstrate a new ECM was purchased.
The link to our help desk is on the front page of our website.
Cheers
Cindy