I realize I am doing something wrong with my steps in attempt to clone a working Blink SD card.
Short story version: I have 2 Blink charger units. One stopped working, blank screen after the EVproject screen. I take the SD card from the working unit and swapped out from the failed unit. Voila! It boots up.
Next, I read forum threads and found out that you can use "DriveImage XML tool" http://www.runtime.org/driveimage-xml.htm to clone the SD cards. So, I tried to use this Windows-based tool and did a "copy to image and restore", also tried a "drive-to-drive" copy BUT, nothing worked. (???????)
I think I am doing something wrong with the cloning process. Can someone pls help?
NOTE: I don't have access to a Linux machine but I may ask someone tomorrow.