手工注入主密钥，客户调试时用

首先需要管理员登录。

Manually Inject Master Key / Transmission Key

1. Click Settings

  - Go to About POS.

2. Select POS Configuration

  - Go to POS Configuration.

3. Load Key

  - Select Load Key.

4. Select Input Key.

5. Enter Authorization Password

  - Enter the authorization password: `87654321`.

6. Select Key Type

  - Choose the key type:  
    - `1`: Master Key  
    - `2`: Transmission Key

7. Input Key Index

  - Enter the key index: `0-50` (choose the appropriate index).

8. Enter Component 1 Password

  - Enter Component 1 password: `88888888`.

9. Enter Component 1 Key

  - Input Component 1 key: `Enter your key`.

10. Enter Component 2 Password

  - Enter Component 2 password: `99999999`.

11. Enter Component 2 Key

   - Input Component 2 key: `Enter your key`.

12. Calculate Master/Transmission Key

   - Calculate the Master/Transmission Key:  
     `Master/Transmission Key = Component 1 Key XOR Component 2 Key`.

With these steps, you can successfully inject the master key or transmission key.