# How to convert from Zigbee Coordinator into a Zigbee Router device

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#### 1. Make sure Home Assistant (ZHA) doesn't use the device as coordinator

#### 2. Flash the `router-example.yaml` to your ZB-GW03

```
esphome run router-example.yaml
```

#### 3. Install the xmodem file transfer tool lrzsz

```
apt-get install lrzsz
```

#### 4. Download the Zigbee router firmware image

```
wget https://github.com/digiblur/Tasmota/raw/development/zigbee_router/efr32mg21_zigbee_router_signed-6.7.10.gbl.ota
```

#### 5. Boot the Zigbee module into the download mode

- Turn `on` the `Download Mode` switch entity via Home Assistant
- Turn `on` the `Zigbee Reset` switch entity via Home Assistant (goes to "off" automatically)
- Turn `off` the `Download Mode`

#### 6. Telnet to the bootloader of the Zigbee module and select "upload gbl"

- `telnet 192.168.132.230 6638`
- Press `return`
- Press `1` and `return` to select "upload gbl"

```
$ telnet 192.168.132.230 6638
Trying 192.168.132.230...
Connected to 192.168.132.230.
Escape character is '^]'.

Gecko Bootloader v1.9.1.04
1. upload gbl
2. run
3. ebl info
BL >
Gecko Bootloader v1.9.1.04
1. upload gbl
2. run
3. ebl info
BL > 1

begin upload
```

#### 7. Go to a second terminal and upload the new firmware. You don't need to cancel the telnet session

```
$ sx -vv -X -b --tcp-client 192.168.132.230:6638 efr32mg21_zigbee_router_signed-6.7.10.gbl.ota
connecting to [192.168.132.230] <6638>

Sending efr32mg21_zigbee_router_signed-6.7.10.gbl.ota, 1843 blocks: Give your local XMODEM receive command now.
Bytes Sent: 236032   BPS:3556

Transfer complete
```

#### 8. Restart the Zigbee module via Home Asisstant or Reboot the whole device

Press the `Zigbee Reset` switch or `Restart` switch.

#### 9. Enable the "Pairing Mode"

Primary method is to go to the ESPHome device in Home Assistant and turn the `Enable Pairing Mode` switch `on`. The switch goes back to `off` after a few seconds. This is fine!

Alternative method to enable pairing mode is to use a paper clip to press the physical reset button of the device which is inside a hole located next to the USB power plug.

#### 10. The Router can be paired now with your Zigbee Coordinator

If you use ZHA go to your Zigbee Coordinator Device and press "Add device".

![Paired Zigbee router](../images/zha-paired-router.png "Paired Zigbee router")