# Elios 1 Remote controller is beeping and red LED flashes

#### **A  beeping sound and red flashing LED can indicate the following errors:**

* Low battery
* Stick calibration
* Hardware error

If the possibility of a low battery has been eliminated then the use of the "DJI GO" app is required the debug the issue further. 

{% hint style="info" %}
As DJI GO and Elios Cockpit don't get along, we do not recommend you to install it on the Flyability tablet. We recommend installing DJI GO on your personal device, such as a smartphone or tablet.
{% endhint %}

***

### **Important notice**

{% hint style="warning" %}
The fiirmware version of the controller must remain at version 1.2.10
{% endhint %}

{% hint style="danger" %}
As DJI GO and Elios Cockpit don't get along, we do not recommend you to install it on the Flyability tablet. We recommend installing DJI GO on your personal device, such as a smartphone or tablet.
{% endhint %}

***

### **What you will need**

* Android/IOS device with DJI GO app installed (DJI GO—for products before P4 version)\
  [DJI Go App (Android/IOS)](https://www.dji.com/ch/downloads/djiapp/dji-go-3)
* USB Cable
* The remote controller

***

### Step by Step guide

* Deploy, connect the USB cable and turn on the GCS.
* Launch DJI GO app
* Once the Remote Controller Picture appears, tap on Camera.

<figure><img src="/files/yLO6yEAIwQQvR7UK4etd" alt=""><figcaption></figcaption></figure>

* Tap on the bar at the top of the screen to display the cause of the error.

<figure><img src="/files/tDXkMsOAv2stybtsNAJ9" alt=""><figcaption></figcaption></figure>

1. If calibration is required: follow the on-screen instructions to perform the calibration.\
   [Instructions are detailed in this article](/aircraft/elios-2/elios-2-feature-details/elios-2-remote-controller-stick-calibration.md)
2. If hardware error: The unit will need to be sent to Flyability for repairs or swapped out for a new unit. Please contact the [support](https://www.flyability.com/support-request)


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