# Download a parameter update to your Roc Terminal+ device with multi-MID

Roc Terminal+ on N950, N950-S, and X800 devices

After you've updated the device settings on the Roc Terminal+ web portal, you must download the updates to the device to apply the changes.

For multi-MID devices, you can:

- [Download a parameter update to a child MID](https://support.payroc.com/en-US/core-products/roc-terminal-plus/devices/newland-n950/download-a-parameter-update-to-a-multi-mid-device.md#download-a-parameter-update-to-a-child-mid).
- [Download a parameter update to all child MIDs associated with a parent MID](https://support.payroc.com/en-US/core-products/roc-terminal-plus/devices/newland-n950/download-a-parameter-update-to-a-multi-mid-device.md#download-a-parameter-update-to-all-child-mids-associated-with-a-parent-mid).

## Download a parameter update to a child MID 

**Note:** To download a parameter update to a child MID, you must be logged in to the child MID account.

1. On the main screen of the device, tap the **Main Menu** icon ≡.
2. Tap **UPDATES**.
3. Verify that the endpoint identifier (EPI) in the field is correct. If the field is empty, enter the EPI associated with the child MID.
4. Tap **Enter**.
5. After the download is complete, run a test transaction.

## Download a parameter update to all child MIDs associated with a parent MID 

To download a parameter update to all child MIDs associated with a parent MID, complete the following steps:

1. [Enable App Update in the web portal](https://support.payroc.com/en-US/core-products/roc-terminal-plus/devices/newland-n950/download-a-parameter-update-to-a-multi-mid-device.md#step-1-enable-app-update-in-the-web-portal).
2. [Download a parameter update to all child MIDs](https://support.payroc.com/en-US/core-products/roc-terminal-plus/devices/newland-n950/download-a-parameter-update-to-a-multi-mid-device.md#step-2-download-a-parameter-update-to-all-child-mids).

### Step 1: Enable App Update in the web portal 

1. Log in to [https://terminalplus.rocpos.com/login](https://terminalplus.rocpos.com/login).
2. From the navigation menu, select **Device Management**.
3. In the search box, enter the EPI associated with the parent MID.
4. Next to the EPI that you want to update, turn on **App Update**.
5. Select **Okay**.

### Step 2: Download a parameter update to all child MIDs 

1. On the main screen of the device, tap the **Main Menu** icon ≡.
2. Tap **UPDATES**.
3. Verify that the EPI in the field is correct. If the field is empty, enter the EPI associated with the parent MID.
4. Tap **Enter**.
5. After the download is complete, run a test transaction.

## Related articles

- [Download a parameter update to the Roc Terminal+ mobile app](https://support.payroc.com/en-US/core-products/roc-terminal-plus/mobile-app/download-a-parameter-update-to-the-roc-terminal-mobile-app.md)
- [Set up tip reporting for your staff members on a Roc Terminal+ device](https://support.payroc.com/en-US/core-products/roc-terminal-plus/web-portal-device-configuration/set-up-tip-reporting-for-your-staff-members.md)
- [Print a presale ticket on your Roc Terminal+ device](https://support.payroc.com/en-US/core-products/roc-terminal-plus/devices/newland-x800/print-a-presale-ticket.md)
- [Find the EPI of your Roc Terminal+ device](https://support.payroc.com/en-US/core-products/roc-terminal-plus/devices/newland-x800/find-the-epi-of-your-device.md)

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From [Payroc Support](https://support.payroc.com/en-US/core-products/roc-terminal-plus/devices/newland-n950/download-a-parameter-update-to-a-multi-mid-device). Every page is listed in [llms.txt](https://support.payroc.com/llms.txt).