Octoprint-Smart-Filament-Sensor VS OctoPrint-FirmwareUpdater

and this? https://github.com/maocypher/Octoprint-Smart-Filament-Sensor

Use this type of sensor and hook it up to the Raspberry rather than to the printer. It's much easier and there's no firmware flashing involved. Also, if you print from Octoprint you must connect it to the Raspberry anyway, otherwise Octoprint would not know when the filament runs out.

After reading some more seems like you CAN do it, but I was either too scared or didn't know about it in Mid-2021

Firmware Updater Useful for flashing firmware to printer without having to use sd card. Frees up an sd card for me

I have 2 skr 1.4 turbo boards and before I switched to klipper I always updated my firmware using the firmware updater plug in for octoprint. On the github page it guided you through setup for that board family. https://plugins.octoprint.org/plugins/firmwareupdater/

I followed the install instructions from this link. I installed the python 3 compatible version of heat shrink.

Method 3 (Through Octopi) - I installed Anaconda to download the firmware updater for Octopi found here (https://plugins.octoprint.org/plugins/firmwareupdater/) but cannot install it through the command line. I get "python setup.py egg_info did not run successfully.". Tried upgrading pip to no avail.

if you have an Raspberry pi you can try https://plugins.octoprint.org/plugins/firmwareupdater/

I'm not sure if this OctoPrint plug-in works with the neptune 2 but it's worth a shot. https://plugins.octoprint.org/plugins/firmwareupdater/

You need a plugin called Firmware Updater.

Only if you already have Binary File Trainsfer setting enabled in Marlin. So you might be stuck since that's not normally enabled. But when it is enabled, it does work. I only update via octoprint anymore. https://github.com/OctoPrint/OctoPrint-FirmwareUpdater/blob/master/doc/marlinbft.md