# Example
{% hint style="info" %}
The current document is based on v0.3.5-patch. Documentation for the v0.4.0 upgrade will be prepared soon.
{% endhint %}
The purpose of this document is to inform the users on how to upgrade the chain to v0.3.5 using `cosmovisor`. All processes mentioned in this document must be conducted on the binary v0.3.3 preconfigured chain server.
## Cosmovisor download & setup
**1. Download Cosmovisor**
```bash
go install cosmossdk.io/tools/cosmovisor/cmd/cosmovisor@latest
```
**2. Using the command below**
```bash
sudo mv ~/go/bin/cosmovisor /usr/local/bin/cosmovisor
```
**3. Setup environment**
```bash
echo "# [FirmaChain] Setup Cosmovisor" >> ~/.profile
echo "export DAEMON_NAME=firmachaind" >> ~/.profile
echo "export DAEMON_HOME=$HOME/.firmachain" >> ~/.profile
echo "export DAEMON_ALLOW_DOWNLOAD_BINARIES=false" >> ~/.profile
echo "export DAEMON_RESTART_AFTER_UPGRADE=true" >> ~/.profile
echo "export UNSAFE_SKIP_BACKUP=false" >> ~/.profile
echo "export DAEMON_PREUPGRADE_MAX_RETRIES=0" >> ~/.profile
```
Once you've applied all environment variables, please reload the .profile file by running the command provided below.
```bash
source ~/.profile
```
If all environment variables have been registered successfully, you can input the command provided below to get an output on the registered variables.
```bash
echo $DAEMON_NAME
=> firmachaind
```
:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
***※ In case of 1.0.0 version.***
* Please execute the command below.\
If you don't execute this command, you can't run **`cosmovisor`**.
```bash
echo "{}" >> /home/firma/.firmachain/cosmovisor/current/upgrade-info.json
```
:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
In order to launch **`cosmovisor`**, please enter the command provided below.
```bash
$ cosmovisor run start
7:44AM INF running app args=["start"] module=cosmovisor path=/home/firma/.firmachain/cosmovisor/genesis/bin/firmachaind
7:44AM INF starting ABCI with Tendermint
7:44AM INF Starting multiAppConn service impl=multiAppConn module=proxy
7:44AM INF Starting localClient service connection=query impl=localClient module=abci-client
7:44AM INF Starting localClient service connection=snapshot impl=localClient module=abci-client
7:44AM INF Starting localClient service connection=mempool impl=localClient module=abci-client
7:44AM INF Starting localClient service connection=consensus impl=localClient module=abci-client
7:44AM INF Starting EventBus service impl=EventBus module=events
7:44AM INF Starting PubSub service impl=PubSub module=pubsub
7:44AM INF Starting IndexerService service impl=IndexerService module=txindex
7:44AM INF ABCI Handshake App Info hash= height=0 module=consensus protocol-version=0 software-version=0.3.3
7:44AM INF ABCI Replay Blocks appHeight=0 module=consensus stateHeight=0 storeHeight=0
7:44AM INF asserting crisis invariants inv=0/11 module=x/crisis name=gov/module-account
7:44AM INF asserting crisis invariants inv=1/11 module=x/crisis name=distribution/nonnegative-outstanding
7:44AM INF asserting crisis invariants inv=2/11 module=x/crisis name=distribution/can-withdraw
7:44AM INF asserting crisis invariants inv=3/11 module=x/crisis name=distribution/reference-count
7:44AM INF asserting crisis invariants inv=4/11 module=x/crisis name=distribution/module-account
7:44AM INF asserting crisis invariants inv=5/11 module=x/crisis name=bank/nonnegative-outstanding
7:44AM INF asserting crisis invariants inv=6/11 module=x/crisis name=bank/total-supply
7:44AM INF asserting crisis invariants inv=7/11 module=x/crisis name=staking/module-accounts
7:44AM INF asserting crisis invariants inv=8/11 module=x/crisis name=staking/nonnegative-power
7:44AM INF asserting crisis invariants inv=9/11 module=x/crisis name=staking/positive-delegation
7:44AM INF asserting crisis invariants inv=10/11 module=x/crisis name=staking/delegator-shares
...
12:55PM INF ABCI Replay Blocks appHeight=1 module=consensus stateHeight=1 storeHeight=1
```
Now, Cosmovisor is up and running.
## Upgrade version binary download & setup
The user must already be running FirmaChain v0.3.3 and this process illustrates the necessary preparations to upgrade the chain to v0.3.5 using Software Proposal.
#### 1. Folder Structure Setting
```bash
mkdir -p $DAEMON_HOME/cosmovisor/genesis/bin
mkdir -p $DAEMON_HOME/cosmovisor/upgrades/v0.3.5/bin
```
:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
***※ In case of 1.0.0 version.***
* Please execute the command below.\
If you don't execute this command, you can't run **`cosmovisor`**.
```bash
echo "{}" >> /home/firma/.firmachain/cosmovisor/current/upgrade-info.json
```
:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
**2. Prepare firmachaind binary**
```bash
git clone https://github.com/firmachain/firmachain.git
cd firmachain
git pull or git checkout v0.3.5-patch
make install
```
**3. Copy and Paste the Binary File to the Cosmovisor Upgrade Folder Directory**
```bash
mv go/bin/firmachaind $DAEMON_HOME/cosmovisor/upgrades/v0.3.5/bin/firmachaind
```
## Post-Upgrade
`cosmovisor` should be up and running using the upgraded file in v0.3.5/bin folder. Please use the command provided below to check the upgraded binary version.
```bash
$ cosmovisor run version
8:02AM INF running app args=["version"] module=cosmovisor path=/home/firma/.firmachain/cosmovisor/upgrades/v0.3.5/bin/firmachaind
0.3.5-beta3-1-g4a1ba1c
```
---
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