Update blockchain node

Use the following steps to update the blockchain node software, if you already have an older version installed.

Warning

This is blockchain software. Do not use on a computer or device with sensitive or important personal data. Using this software will require opening firewall ports. Using this software may result in heavy internet data usage. Use at your own risk.

Important

It is highly recommended to take a backup of your wallet keys before proceeding, to a different device.

If the node is running, stop the existing node by pressing CTRL+C. If the node is not running, open the appropriate shell window.

Open Powershell

Open Terminal

Open Terminal
Change to the folder dp.
```
cd c:\dp
```
```
cd $HOME/dp
```
```
cd $HOME/dp
```

Download the updated CLI (command line interface) wallet by running the following command:

curl https://github.com/quantumcoinproject/quantum-coin-go/releases/download/v2.0.74/qc-release-windows-v2.0.74.zip -o qc-release-windows-v2.0.74.zip

curl https://github.com/quantumcoinproject/quantum-coin-go/releases/download/v2.0.74/qc-release-windows-compact-v2.0.74.zip -o qc-release-windows-v2.0.74.zip

curl -Lo qc-release-mac-v2.0.74.tar.gz https://github.com/quantumcoinproject/quantum-coin-go/releases/download/v2.0.74/qc-release-mac-v2.0.74.tar.gz

curl -Lo qc-release-mac-v2.0.74.tar.gz https://github.com/quantumcoinproject/quantum-coin-go/releases/download/v2.0.74/qc-release-mac-compact-v2.0.74.tar.gz

curl -Lo qc-release-ubuntu-v2.0.74.tar.gz https://github.com/quantumcoinproject/quantum-coin-go/releases/download/v2.0.74/qc-release-ubuntu-v2.0.74.tar.gz

curl -Lo qc-release-ubuntu-v2.0.74.tar.gz https://github.com/quantumcoinproject/quantum-coin-go/releases/download/v2.0.74/qc-release-ubuntu-compact-v2.0.74.tar.gz

Extract the contents of the downloaded zip file to a folder.

Expand-Archive -Path qc-release-windows-v2.0.74.zip -DestinationPath c:\ -Force

tar -xzvf qc-release-mac-v2.0.74.tar.gz

tar -xzvf qc-release-ubuntu-v2.0.74.tar.gz

This step is specific to Windows.
Close the Powershell window. Open a command prompt instead and change to the following folder.
```
cd c:\dp
```
Run any other relevant command for connecting to mainnet or starting a validator node.
To stop the blockchain node client, do not close the window or logout or shutdown directly. Instead press CTRL+C.