# Ledger Integration

This guide will help you connect your Ledger device to your Accumulate wallet (ACME) account. The Accumulate wallet enables you to send and receive ACME.

**Prerequisite**

* You need to have Docker installed on your system.
* You need to have Git installed.
* It works on a Linux Ubuntu OS only.
* The Accumulate CLI supports the following hardware device: Ledger Nano S plus and Ledger Nano X.

### Install the Accumulate Ledger (ACME) app on your Ledger device

**Step 1** 

Clone Ledger repo from GitHub

```
git clone https://github.com/LedgerHQ/ledger-app-builder.git
```

**Step 2**

Locate the builder folder.

```
cd ledger-app-builder
```

**Step 3**

Run the ledger builder.

```
sudo Docker build -t ledger-app-builder:latest .
```

**Step 4**

Compile the app.

```
sudo docker run --rm -ti -v "$(realpath .):/app" ledger-app-builder:latest
```

**Step 5**

Then exit the shell

```
exit
```

**Step 6**

Clone Accumulate repo from Gitlab in the ledger builder repo

```
git clone https://gitlab.com/accumulatenetwork/ledger/app-accumulate.git
```

**Step 7**

Locate the accumulate folder.

```
cd app-accumulate
```

**Step 8**

Run the below command to open the docker shell.

```
./docker-loader.sh
```

**Step 9**

Run the following command in the `app` folder.

{% hint style="info" %}
**Note:** You will need to connect the Nano s-plus to your laptop and ensure it's unlocked.
{% endhint %}

```
make
```

**Step 10**

Add the following to `ENV` by typing the following command.

```
BOLOS_SDK=/opt/nanosplus-secure-sdk make load
```

If it doesn't work, run `make clean` then rerun the **step 10** command.

**Step 11**

At this stage, your Ledger Nano will show you **Deny unsafe manager** and an arrow **>** to see other options like **Public key** and **Allow safe manager.**

<figure><img src="https://4256923492-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MhVaqCAmRpnPF2WUCP4%2Fuploads%2F1yGaVa5BQ7uMAvrrwk9G%2FScreenshot%202022-10-07%20at%2011.00.18.png?alt=media&#x26;token=9ff24634-a540-4956-bf36-840b77030338" alt=""><figcaption><p><strong>Deny unsafe manager</strong></p></figcaption></figure>

Press the right button to navigate to **Allow safe manager.** Then press both buttons to accept.

<figure><img src="https://4256923492-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MhVaqCAmRpnPF2WUCP4%2Fuploads%2FDol8JMGo8IgtWEMBA0AD%2FScreenshot%202022-10-07%20at%2010.24.55.png?alt=media&#x26;token=799e47ef-e999-4807-a40c-a3b86cff3e8c" alt=""><figcaption><p><strong>Allow unsafe manager</strong></p></figcaption></figure>

**Step 12**

Install **app Accumulate** by pressing the right button until you see **Perform installation**

<figure><img src="https://4256923492-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MhVaqCAmRpnPF2WUCP4%2Fuploads%2F6nMsGAhk5Y8yjYiatpAa%2FScreenshot%202022-10-07%20at%2010.27.19.png?alt=media&#x26;token=f8cac00b-f414-4902-a7e5-98277dc681bd" alt=""><figcaption><p>Install app accumulate</p></figcaption></figure>

Then, press both buttons to perform the installation.

<figure><img src="https://4256923492-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MhVaqCAmRpnPF2WUCP4%2Fuploads%2FAg046lxqTi8QWpgWaDOE%2FScreenshot%202022-10-07%20at%2010.27.03.png?alt=media&#x26;token=9d852bcd-30b6-4aac-8488-1f532c2a73ea" alt=""><figcaption><p><strong>Perform installation</strong></p></figcaption></figure>

{% hint style="info" %}
Your Ledger device will prompt you to enter your pin again.
{% endhint %}

If the installation is complete, you will see the screen below.

<figure><img src="https://4256923492-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MhVaqCAmRpnPF2WUCP4%2Fuploads%2FMRfWsMmAH8DsfU8IWpMU%2FScreenshot%202022-10-07%20at%2010.26.40.png?alt=media&#x26;token=1fdbe9d0-adcd-4f37-9318-a4dd6a16e8a6" alt=""><figcaption></figcaption></figure>

You have successfully installed Accumulate on your Ledger device via CLI.