add download instructions (#1511)

Co-authored-by: Thomas Göttgens <tgoettgens@gmail.com>
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@ -189,20 +189,33 @@ MAC: 24:6f:28:b5:36:71
Hard resetting via RTS pin...
```
### Navigate to Firmware
### Download Firmware
`cd` into the directory where you unzipped the latest release. For example:
1. Head to the [Meshtastic Downloads Page](/downloads) to download the latest firmware.
2. Scroll down to the **Firmware** section and select one of the following, depending on your preferences:
- **Download Stable**: For stable, well-tested releases.
- **Download Alpha**: For newer, experimental releases with the latest features.
3. Once redirected to the GitHub release page, scroll down to the "Assets" section and expand it. Identify the correct firmware for your device by its architecture (e.g., `firmware-esp32s3` for ESP32-S3-based devices like the Heltec V3).
4. Download the file and take note of the download location on your system (usually in your `~/Downloads` folder).
### Navigate to Firmware Directory
1. Open a terminal and navigate (`cd`) to the directory where your firmware was downloaded. The folder name typically matches the architecture and firmware version from the zip file. For example:
```shell title="Example"
cd ~/Downloads/firmware/
cd ~/Downloads/firmware-esp32s3-X.X.X.xxxxxxx/
```
:::note
Make sure to replace `esp32s3` and the version number with those corresponding to the file you downloaded.
:::
### Install/Update Firmware
Install or Update the device that you have by using the following commands according to your operating system:
Now, proceed with the instructions below for your operating system to install or update the firmware for your specific board:
:::caution
Be very careful to install the correct firmware file for your board. In particular, the popular 'T-BEAM' radio from TTGO is not called 'TTGO-Lora' (that is a different board). So don't install the 'TTGO-Lora' build on a TBEAM, it won't work correctly. If you flash the incorrect device firmware, it may appear to successfully complete, yet the device will usually become unresponsive, displaying a blank screen (if equipped). Attempt to flash the correct version. Please note, while these devices are quite resilient and damage is not always likely, there is a possibility of onboard radio and peripheral damage due to incorrect GPIO pin direction.
Be very careful to install the correct firmware file for your board. In particular, the popular 'T-BEAM' radio from TTGO is not called 'TTGO-Lora' (that is a different board). So don't install the 'TTGO-Lora' build on a TBEAM, it won't work correctly. If you flash the incorrect device firmware, it may appear to successfully complete, yet the device will usually become unresponsive, displaying a blank screen (if equipped). Attempt to flash the correct version. Please note, while these devices are quite resilient and damage is not always likely, there is a possibility of onboard radio and peripheral damage due to incorrect GPIO pin direction
:::
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