So this is the G6 new watchface firmware. You can download it here.
There are five watchfaces in the new firmware, one old watchface with four new beautiful watchfaces.
How to use these new watchface? Please download the firmware and make a firmware update manually. You can follow this tutorial to update your watchface. https://chinawatchs.com/mtk-smartwatch-update-the-proper-way/
Warning! Your watch must have enough battery life for firmware update, 50 % is OK.
Sorry this firmware only works with G6 second generation heart rate version.
Any question about how to make a firmware update, feel free to ask. If you want a quicker reply, you can come here, I’ll try my best to help you. https://plus.google.com/b/103465466477124761117/communities/108993240225376107397