No device detected NULL_NULL_NULL NULL

[drstil]

I have FindMy App running, devices are available. But see:

Current time: 03/28/2025, 18:24:58
| Name           | Last update   |   Log count |
|----------------|---------------|-------------|
| NULL_NULL_NULL | NULL          |           1 |

Full Disk Access for Terminal is granted. On macOS 15.3.2 I had to add the adaptions from here to get it running. Any idea?

[mega-joe]

I'm getting the same error and was trying to trace out the cause. It looks like the files FindMyHistory parses to get the tracking data are these:

~/Library/Caches/com.apple.findmy.fmipcore/Items.data
~/Library/Caches/com.apple.findmy.fmipcore/Devices.data

In previous MacOS versions these files contained readable data, but now just contain a single encrypted data block. It appears apple no longer writes this data in clear text for security reasons. So without the key to decrypt, and building that decryption into FindMyHistory this utility appears to be worthless.