Connect your Watch with your MagicAWRT

Slide the magnetic holder into the frame of the Apple Watch and place it on the adapter. Make sure to put your Apple Watch on the connector specified for your model!

Open MagicCFG (!) and connect

Open MagicCFG and connect to the serial port.
Make sure to select the correct port!
(most likely usbserial_xxxx or usbmodem_xxx)

Update the Date/Time of the Watch*

*This is an optional step which is sometimes needed to get writing working...
To update the Date/Time, run the following command in the manual command field in MagicCFG

The scheme is looking like that:
rtc --set YYYYMMDDhhmmss
So run the following command:
(f.e. for 31. May 2021 16:59:22)
rtc --set 20210531165922


Write MkBS information

In order to get the special watchfaces, you need to edit or add the MkBS.
MkBS stands for MarketingSoftwareBehavior.
There are two types of special watchfaces. So use the following commands to flash them:

Nike+
syscfg add MkBS 0x01020001 0x00000000 0x00000000 0x00000000 

Hermès
syscfg add MkBS 0x01010001 0x00000000 0x00000000 0x00000000