> For the complete documentation index, see [llms.txt](https://docs.arkelectron.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.arkelectron.com/products/electronic-speed-controller/ark-4in1-esc/firmware/flash-am32.md).
# Flash AM32
You can flash firmware to the ESCs using a Betaflight or Ardupilot flight controller. The ESCs must be powered and connected to the flight controller via the signal wire.
Download the latest release of [AM32](https://github.com/am32-firmware/AM32/releases).
{% file src="/files/OxwCymRzsKkdAhhaaqYr" %}
***
Navigate to the [am32-configurator](https://am32.ca/configurator) web tool and connect your flight controller to your PC via USB. If you're using Ardupilot you must first configure Ardupilot for ESC Passthrough.\
\
Connect to your device\
Once connected, select Read\
If successful you should see all of the settings for each motor
***
{% hint style="danger" %}
**Flashing alone is not enough.** You must now set **KV** and **Pole Count** for each motor channel — see [AM32 Configuration](/products/electronic-speed-controller/ark-4in1-esc/am32-configuration.md).
{% endhint %}
---
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