This example is based on the following example:
Index 0 = local (Setting used for most systems !!!)
Index 1 = dm1
Index 2 = dm2
Index 3 ...
The Firmware URL
Epoch time:
so i.e. 2025-05-28 13:30 is 1748431852. It's for local time not GMT.
If you do not use the Firmware update start, the update is started immediately !!!