Step by step instruction on how to flash board

[cordvision]

I'm having issues with my hub (resets to factory setting after power loss / reboot among other things). I think at this point I need to reset it completely and flash the board.

I just can't find any step by step instructions on how to do so anywhere. The "read me" just says: "The goal here is to flash your ESP with the firmware. It's really easy to do this with PlatformIO:". I've never flashed a board in my life nor do I have any programming experience, so I'm a little bit at a loss here.

Here is where I'm at so far.

My board: nodemcuv2

I downloaded Visual Studio Code on my intel mac

I installed the PlatformIO extension

Installed Python 3.9

I would now like to clear flash the board and then flash the firmware.
From here on out, I have no idea what the next steps are. I already searched all over the internet but I can't find any step by step instructions that apply to my case and that I can understand with my very limited knowledge. Any chance somebody could point me into the right direction or post some step by step instructions? Any help would be greatly appreciated.

UPDATE:
Took me about 6 hours but I finally figured it out. For anybody else in the same position, this might help you out... it certainly helped me:
https://jacksonraila.wordpress.com/2021/01/17/diy-milight-hub-for-home-assistant-using-sidoh-nodemcu-esp8266/

[BebeMischa]

That guide is really fantastic. Helped me a lot too! ;-)