---
id: 4631-r-to-4631
title: Convert RAK4631-R to RAK4631
---

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Running Meshtastic on RAK WisBlock NRF52 based boards relies on the avaliability of the Arduino bootloader.

This process only needs to be performed once

This conversion requires the use of either a [DAPLink](https://daplink.io/) or [J-Link](https://www.segger.com/products/debug-probes/j-link/). The most reasonably priced and avaliable is the [RAKDAP1](https://store.rakwireless.com/products/daplink-tool).

1. Install [Python](https://www.python.org/downloads/)
2. Install [pyOCD](https://pyocd.io/)

```shell
pip3 install pyocd
```

3. Download the required bootloader: [WisCore_RAK4631_Board_Bootloader.hex](https://github.com/RAKWireless/WisBlock/releases/download/0.4.2/WisCore_RAK4631_Board_Bootloader.hex)
4. Connect the RAKDAP as follows:
   [<img src="/img/rak4631-rakdap1.png" style={{zoom:'25%'}} />](/img/rak4631-rakdap1.png)
5. Flash the bootloader

```shell
pyocd flash -t nrf52840 .\WisCore_RAK4631_Board_Bootloader.hex
```

6. Continue with the [normal instructions](/docs/getting-started/flashing-firmware/flashing-nrf52)

Alternate methods of flashing are outlined [here](https://github.com/RAKWireless/WisBlock/tree/master/bootloader/RAK4630).
