I have written about how to [install](https://steemit.com/gridcoin/@scalextrix/how-to-install-gridcoinboinc-on-a-raspberry-pi) and [control a Raspberry Pi](https://steemit.com/gridcoin/@scalextrix/how-to-control-your-gridcoin-wallet-with-command-line) based Gridcoin node, with the release of a [new version 3.5.9.1](https://steemit.com/gridcoin/@peppernrino/gridcoin-research-v3-5-9-1-msi-42-5-leisure-upgrade) of the wallet now is a great time to discuss upgrading.

**Before doing an upgrade you might want to make a [backup of your SD card image](https://www.raspberrypi.org/forums/viewtopic.php?p=239331), just to be on the safe side.**  If you encounter any problems you can then just re-load the SD card with your current image.  Its worth keeping regular SD card images, I do mine monthly, its much faster than setting up your Pi again.

Its good practice to check for OS upgrades before making other changes:
> sudo apt-get update -y && sudo apt-get upgrade -y && sudo apt-get dist-upgrade

Upgrading is much easier than making a new install, first prepare for re-compiling by closing down all other non essential processes, this will reduce the strain on your R-Pi:

> cd /var/lib/boinc-client
> boinccmd --quit
> sudo systemctl stop gridcoinresearchd.service
> cd

Now we go to the Gridcoin-Research folder and download the update from github:
> cd Gridcoin-Research
> git pull

Once thats completed, we re-compile the source code
> cd src
> sudo make -f makefile.unix clean
> sudo make -f makefile.unix -e PIE=1

Thats going to take a long time, so get a cup of tea.  Once its completed we have just a few more steps:
> sudo strip gridcoinresearchd
> sudo install -m 755 gridcoinresearchd /usr/bin/gridcoinresearchd

Now you can either manually restart all your programs, or perhaps easier:
> sudo reboot

Thats it nice and easy.  Once your system is running again, you can do:
> gridcoinresearchd getinfo

and check you are on the latest version:

![Capture.JPG](https://steemitimages.com/DQma8gDgwQybPdgd2quB4MyW4NSDXxEqKrgWc6iqrATCiQ1/Capture.JPG)