> 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/flight-controller/jetson-pabs/ark-jetson-pab-carrier/developer/flashing-guide.md).

# Flashing Guide

Bundles ship pre-flashed with the ARK Jetson image and ARK-OS. Follow this guide to update to a newer release or to flash a Jetson for the first time.

The image is built from the [ark\_jetson\_kernel](https://github.com/ARK-Electronics/ark_jetson_kernel) repository, which adds the carrier's device tree to NVIDIA's JetPack. One image covers every Orin Nano/NX module variant.

{% hint style="info" %}
A stock NVIDIA JetPack image will not enable all carrier hardware — use the ARK image, or build from source with the ARK device tree.
{% endhint %}

## Enter Recovery Mode

Connect the **Micro USB** port to your host PC, then power on the Jetson while holding the **Force Recovery** button.

![](https://1515919775-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FOwmEn1N45AR4WjMQhHlu%2Fuploads%2F9iuKES6WQDedSxBeP06D%2FJetson_PAB_LowQ-9-scaled.jpg?alt=media\&token=9ec589e8-ba86-4e49-9a7b-c7a99af32df9)

## Flash a Prebuilt Release (recommended)

On a Debian/Ubuntu host, download the flasher script and flash the latest PAB release to the NVMe SSD:

```bash
curl -LO https://raw.githubusercontent.com/ARK-Electronics/ark_jetson_kernel/main/packaging/flash_from_package.sh
chmod +x flash_from_package.sh
./flash_from_package.sh pab
```

The script downloads the package from [downloads.arkelectron.com/jetson/pab](https://downloads.arkelectron.com/jetson/pab/), checks its SHA-256, waits for the Jetson in recovery mode, and flashes the bootloader and root filesystem. To flash a specific version, pass its tag instead of `pab`, for example `pab-6.2.2.6`.

{% hint style="warning" %}
Hardware revision 3 of this carrier (PAB Rev 3) still uses the `pab` image. `pab-v3` releases are for the [ARK Jetson PAB Carrier V3](/products/flight-controller/jetson-pabs/ark-jetson-pab-carrier-v3.md), a different product.
{% endhint %}

## Build From Source

To customize the kernel, device tree, or preinstalled software, build and flash from source — see the [ark\_jetson\_kernel README](https://github.com/ARK-Electronics/ark_jetson_kernel#build--flash):

```bash
./setup.sh          # one-time download of BSP + rootfs + sources
./build.sh PAB      # build and provision the image (installs ARK-OS)
./flash.sh PAB      # flash to NVMe (--sdcard and --usb also available)
```

You can bake a WiFi profile into the image before flashing with `./scripts/add_wifi_network.sh PAB <ssid> <password>`.


---

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