The time doesn't matter, only the date.
Quote:
3.4.3
Your serial number starts with B008 download this file.
Your serial number starts with B006 download this file.
Your serial number starts with B00A download this file.
Note: If your device is on a version older than 3.4.2, please visit Previous software versions for Kindle Keyboard (3rd Generation) for instructions.
|
via
https://www.amazon.com/gp/help/custo...MQC26VQQMM8XSW
I've run out of suggestions. Unless the serial number was reported to Amazon and it's blacklisted/blocklisted, or they have blocked it by accident, then it will never register.
My KK3 works on WiFi and my DXG on 3G.