homeassistant
Home Assistant is open source home automation that puts local control and privacy first.
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I just updated my on/off switches and fyrtur shades last week (also running on a Pi). For the switches, I clicked a button on them yo make sure they were awake and then ran to my computer to initiate the update immediately and it worked. The "update initiated pass/fail" message should appear in a small pop-up card on the upper right of the Z2M window before disappearing a few seconds later.
What I haven't been able to update is the open/close switches no matter what I've tried.