# How to connect/update Raspberry Pi to Mender demo server

**URL:** <https://hub.mender.io/t/how-to-connect-update-raspberry-pi-to-mender-demo-server/829>\
**Category:** General Discussions\
**Created:** [July 17, 2019, 12:28pm UTC](https://hub.mender.io/t/how-to-connect-update-raspberry-pi-to-mender-demo-server/829 "2019-07-17T12:28:28Z")\
**Posts on this page:** 1\
**Showing post:** 4

<div class="post-metadata">

**Author:** ![ster](https://yyz2.discourse-cdn.com/flex036/user_avatar/hub.mender.io/ster/32/282_2.png) [@ster](https://hub.mender.io/u/ster)\
**Post date:** [July 17, 2019, 2:04pm UTC](https://hub.mender.io/t/how-to-connect-update-raspberry-pi-to-mender-demo-server/829/4 "2019-07-17T14:04:54Z")

</div>

You can get mender-artifact usage help with `-h` flag, try these:

```
./mender-artifact -h
./mender-artifact modify -h

```

Keep in mind that modifying artifacts with `mender-artifact` is currently a slow process, see [https://hub.mender.io/t/mender-artifact-hangs/752/4](https://hub.mender.io/t/mender-artifact-hangs/752/4)

In any case, this is one of many ways (as you’ll see later) that different Mender apps propose to accomplish one basic task - changing /etc/mender/mender.conf file.  
So the easiest way for POC is to modify this file manually after checking it’s [format in docs](https://docs.mender.io/2.0/client-configuration/configuration-file).

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_[View the full topic](https://hub.mender.io/t/how-to-connect-update-raspberry-pi-to-mender-demo-server/829)._