fastboot serial number? On occasion I've seen the serial number reported by adb and fastboot differ. Is there a way to reliably determine what the fastboot serial number will be from adb?
Generally speaking, the serial number as reported by adb get-serialno will be different to fastboot as determined by:


Manufacturer
Make and model of device in question
Android version


fastboot, on the other hand, since there's no adb loaded, instead, it uses a rudimentary USB protocol tied in with the boot-loader, the serial number will be different. 


  Is there a way to reliably determine what the fastboot serial number
  will be from adb?


There is no reliable way of achieving it.