MicroPython Forum (Archive)

Hi

I'm curious if there is a way to "factory-reset" a board (ESP32 in my case) to the original state of a fresh Micropython installation, typically found in commercial hardware solutions. This often involves pressing a button for some time while restoring power, or other techniques.

What I want to achieve basically is that someone without deeper know-how in Micropython can reset their chip to the firmware state as it was when freshly flashed. So basically it would need to:

• delete any WiFi credentials

• delete files created beginning first boot

Is there a way to do this? I don't have much know-how about Micropython yet, but I thought of a custom filesystem that can be cleared when some buttons are pressed.

Second idea I've had would be to put some code in main.py at the beginning that checks for i.e. a reboot reason (don't know if I can somehow determine if i.e. a button was pressed during startup)

Use the source, Luke

See https://github.com/micropython/micropyt ... nisetup.py how the initial filesystem (+some files) gets created.

I assume that a similar approach works for a "factory reset", given you have the required filesystem content somewhere (in frozen modules, another filesystem, tarfile, whereever).

Regards,
Thomas

Thank you karfas

Yes, I have seen this and compile Micropython from scratch would be an option. But how do I reset it to this state? Or how can I delete i.e. the WiFi settings once it's set up? I can't seem to find using os.listdir() etc.

Then you should find out where your installation saves the WLAN credentials.
They might as well live in NVS storage (another "partition" in the EEPROM).