I’m trying to add a second-hand (ebay) Boost to one of my S1 systems.

On the first setup attempt, the S1 iOS app indicated that a device reset was required. That’s plausible. I’ve now reset the device, twice, generating the expected set of flashing LED sequences.

On several subsequent attempts, the app just doesn’t find the Boost. The Boost is wired to the network, has acquired an IP address, and is pingable from other devices over both the wired and wireless networks. The Boost’s LED is flashing green, as one would expect during setup.

Is it possible that if the Boost was previously used on an S2 system (as is likely), there’s a problem in now adding it to an S1 system?