> ## Documentation Index
> Fetch the complete documentation index at: https://help.hoseki.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Install on StartOS

> Install Control Center from the Start9 Community Registry.

Control Center is in the **Start9 Community Registry**. Install it from the StartOS **Marketplace**. It needs StartOS 0.4.0.2 or later.

## Before you start

Install and fully sync these StartOS services. StartOS lists Electrs and Mempool as required.

| Service | Why it is needed |
| - | - |
| **Bitcoin** | Your node. |
| **Electrs** | Wallet balances and transaction history. |
| **Mempool** | Bitcoin prices and transaction details for statements. |

> [!WARNING]
>
> If Electrs is stopped or still syncing, Control Center may not start. Wait for Electrs to finish first.

## Install

**1. Open the Community Registry**

In StartOS, open **Marketplace**. Switch the registry to the **Start9 Community Registry**.

**2. Install**

Find **Bitcoin Control Center**. Select **Install**.

**3. Set your PIN**

StartOS shows a task: **Set a PIN before using Bitcoin Control Center**. Run **Set PIN**. Enter 6 digits twice. Save it in your password manager.

**4. Open it**

Start the service. Open **Web Interface**.

**5. Sign in**

Enter your PIN.

> [!NOTE]
>
> The PIN works only over `https://` or the `.onion` address. Over plain `http://`, you see **Insecure connection not allowed**.

## Options

In StartOS, open Control Center → **Actions** → **Configure**. Saving restarts the service.

* **Mempool URL Override:** leave blank to use your Mempool service. Enter a URL to use another Mempool instance.
* **Log Level:** keep **Info** unless support asks for **Debug**.

StartOS has no Electrum or Tor settings in the app. It always uses your Electrs.

## Forgot your PIN?

Run **Set PIN** again. Your accounts and history stay. Everyone is signed out. See [PIN and lock](https://help.hoseki.app/bitcoin-control-center/security/pin.md).

## Back up

Use the normal StartOS backup. It saves everything. See [Backup and restore](https://help.hoseki.app/bitcoin-control-center/maintenance/backup-restore.md).

## Advanced: sideload the package

Only sideload if support asks you to. The website does not offer the `.s9pk`. Its Start9 **Download** button opens the Community Registry. Email [support@hoseki.app](mailto:support@hoseki.app) and support will send you the file. Then sideload it in StartOS.

Already sideloaded an earlier version? [Back up](https://help.hoseki.app/bitcoin-control-center/maintenance/backup-restore.md) before you switch to the registry version.


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