after finish write file device preform SW reset

[Geromino]

log.txt

basic.txt

What’s happening in your setup:

You're running CircuitPython 9.2.7 on a Feather nRF52840 Express. ( i didnt add lib mpy )

Your code.py uses BLE only for advertising, but no explicit BLE file transfer code is included.

The Glider app connects, and you can:

Create folders

Write files

After each file/folder operation (when running on battery, not USB), the device: see log.txt

Performs an automatic soft reset

On reconnect (reopen app), the written data appears and is correct