Libimobiledevice: ERROR: Could not connect to lockdownd: Invalid HostID (-21)
This error appears when a host which has previously been trusted by the device has had its trust reset (Settings: General: Reset: Reset Location & Privacy) and is plugged in again.
The work-around is to delete the existing trust file in the lockdown directory and re-pair.
It would be nice if this could happen automatically.
jhihn
All 6 comments
you can manually call unpair
mexmer
on 12 Mar 2020
Seeing this too and confirmed that deleting the existing trust file in the lockdown directory does force the the re-paring / trust process to work again.
skmsurf
on 10 Jun 2020
You don't have ti nuke it from orbit, you can unpair it, or delete the trust file.
I would like the message changed though (though happy to have a text error string!)
"Invalid HostID" isn't a good description. The HostID is valid, the error is in the relationship.
jhihn
on 10 Jun 2020
@jhihn can you point me to the function that does the unpair action? Or an example of how you would invoke it
skmsurf
on 10 Jun 2020
idevicepair is a binary: implemented here:
https://github.com/libimobiledevice/libimobiledevice/blob/master/tools/idevicepair.c
jhihn
on 10 Jun 2020
I had this issue; I don't remember ever resetting the trust. I didn't even have to unpair, calling "idevicepair pair" worked.
lmamane
on 22 Sep 2020
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Most helpful comment
You don't have ti nuke it from orbit, you can unpair it, or delete the trust file.
I would like the message changed though (though happy to have a text error string!)
"Invalid HostID" isn't a good description. The HostID is valid, the error is in the relationship.