(04-01-2018, 03:07 PM)GanG ...
Can this be the Build Number: product: GNBJ6755_66_M
unfortunately no, once your device is able to power on then use the recovery mode or factory mode to attempt extracting build number info.
if your device is still totally dead, its due to SPft interruption; see the fix @ https://www.hovatek.com/forum/thread-808.html