Hello
I'm testing a DFU right now
By the way, the icons coming out when advertising in the APP today changed to the Christmas version, it seems a little weird.
Originally, it was good for Advertising, Connection, and Download, But it's weird to OTA Zip file after connection.
I checked through the debug version, so it seems like the data transfer has changed.
If I didn't make a mistake, it seems like the data that the data transfer from APP has changed.
Can you test it and see if it works?