Repairing offline (Xiaomi) zigbee sensor post migtration?

[georgeh (George)]

One of my two Xiaomi contact sensors now shows offline post migration, another of the same type works fine. Both use a custom DTH and worked for 1yr+ pre-migration.

I’ve tried removing the sensor’s battery to repair, and also power cycled my (v2) hub (removing the batteries) – no joy. I’ve tried moving the device to within 10’ of the hub as well.

Any suggestions?

I’ve seen related posts saying this can not be a new app issue, but in any case I’d like to fix “using” the new app given I’ve migrated.

[JDRoberts]

When you power cycled your hub, how long did you leave it off power for?

[georgeh (George)]

Not sure, 30sec at least maybe 60.

[JDRoberts]

For this purpose, in order to force a Zigbee heal, the hub needs to be off-line for about 20 minutes. Leave all your other Zigbee devices on power. Then when they cannot find a hub they will go into “panic mode“ and when the hub comes back online the mesh will be rebuilt.

That should resynch the sensor with the network.

[georgeh (George)]

Tried hub off for 30’, same result. Contact sensor remains “offline”.

There is a slight chance its battery is low, even though it tested OK. I’ll try replacing that next.

I would expect the device reset procedure would be enough to repair the device, rather than needing to do a hub power cycle… seems ridiculous to bring the whole mesh down for so long to “re-pair” one device.

[georgeh (George)]

New battery, same problem - device offline. Tried power cycling the hub again (20’) but no luck.
Will submit support ticket.

[pizzinini]

I had the a xiaomi humidity sensor that was offline. What I usually do, worked last week when I used the new app. I got it to re-connnect by having the hub look for devices to connect to, taking out the battery and holding the button on the sensor while re-inserting the battery. It did not work on the first try but eventually I got it to connect agaain aand has been working for a week now.

[georgeh (George)]

Tried the battery trick, no joy. So I did a forced remove via IDE afterwhich the new app finally discovered the device as a “thing”. Now on to recreating the related automations.