bangle.js 2 firmware install failure: Android 12: Fails to connect

SUMMARY
Followed all directions in this video: Bangle.js 2 Firmware Updates (Android)

STEPS I FOLLOWED

1. I found NRFTOOLBOX on the Android Playstore and installed it. (DFU Library version 1.10.3)
   
2. I downloaded the latest firmware distribution: 2v11_banglejs2.zip
   
3. I poked the DFU button in the NRFTOOLBOX.
   
4. I poked the SELECT FILE button
   
5. Selected the Distribution packet (ZIP) & poked OK (it reported "No items)
   
6. I used the Android Drive app to find the download. (I used the This week button and espruino_2v11_banglejs2.zip file popped up.)
   
7. Touched the app to select the file.
   
8. I selected All and OK
   
9. That took me back to DFU. I used SELECT DEVICE and selected Bangle.js 31f1
   
10. I held the fob down until the === started, then released the fob.
    
11. The download churned for a while then it stopped and displayed an error message for half a second that said DFU CHARACTERISTICS NOT FOUND
    
    

I never got a CONNECT indicator on the watch screen.
I tried at least ten times with the same results.

What am I doing wrong?