> For the complete documentation index, see [llms.txt](https://theiotlearninginitiative.gitbook.io/nextthingcochip/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://theiotlearninginitiative.gitbook.io/nextthingcochip/getting-started/sdk/flash.md).

# Flash

## SDK Flash

## Virtual Machine Startup

```
# cd CHIP-SDK
# vagrant up
# vagrant ssh
vagrant@vagrant-ubuntu-trusty-32:~$
```

## Fel

```
vagrant@vagrant-ubuntu-trusty-32:~$ cd ~/
vagrant@vagrant-ubuntu-trusty-32:~$ sudo rm -r ~/sunxi-tools
vagrant@vagrant-ubuntu-trusty-32:~$ git clone https://github.com/NextThingCo/sunxi-tools.git
vagrant@vagrant-ubuntu-trusty-32:~$ cd sunxi-tools
vagrant@vagrant-ubuntu-trusty-32:~$ make
vagrant@vagrant-ubuntu-trusty-32:~$ sudo rm /usr/local/bin/fel
vagrant@vagrant-ubuntu-trusty-32:~$ sudo ln -s $PWD/fel /usr/local/bin/fel
```

### Trees Update

```
vagrant@vagrant-ubuntu-trusty-32:~$ cd ~/CHIP-tools
vagrant@vagrant-ubuntu-trusty-32:~$ git pull https://github.com/NextThingCo/CHIP-tools.git
vagrant@vagrant-ubuntu-trusty-32:~$ cd ~/CHIP-SDK
vagrant@vagrant-ubuntu-trusty-32:~$ git pull https://github.com/NextThingCo/CHIP-SDK.git
```

### Buildroot

```
vagrant@vagrant-ubuntu-trusty-32:~$ cd ~/CHIP-tools
vagrant@vagrant-ubuntu-trusty-32:~$ ./chip-update-firmware.sh
```

### Debian

```
vagrant@vagrant-ubuntu-trusty-32:~$ cd ~/CHIP-tools
vagrant@vagrant-ubuntu-trusty-32:~$ ./chip-update-firmware.sh -d
```