> For the complete documentation index, see [llms.txt](https://docs.gremsy.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.gremsy.com/gimbals-for-m300-m350/general/upgrade-firmware.md).

# UPGRADE FIRMWARE

**“G”** for flashing Gimbal firmware

<figure><img src="/files/0tN1rb2Y5bvlGvY8Cdjl" alt=""><figcaption></figcaption></figure>

## How to Upgrade Gimbal Firmware

1. **Power on the gimbal.**
2. **Connect** the gimbal to your Mac or PC using a **USB-C cable**.
3. **Launch** the **gTune Desktop** software.
4. In the software, navigate to the **“Connection”** tab and select the **“Serial”** option.
5. **Choose** the correct COM port from the list provided.
6. Click the **“Connect”** button.
7. Go to the **“Upgrade”** tab.
8. Click **“Browse”** and select the appropriate firmware file from your computer.
9. **Important:** Ensure that any **RF receiver (if installed)** is **disconnected** before proceeding.
10. Click the **“Upgrade”** button to begin the process.

> ⚠️ The upgrade will take approximately **2 minutes**.\
> Once completed successfully, the gimbal will **automatically restart**.

<figure><img src="/files/s5WLrCpa5If5nOUTDeZ2" alt=""><figcaption></figcaption></figure>

## DOWNLOAD

{% embed url="<https://github.com/Gremsy/gTuneDesktop/releases/latest>" %}
GTUNE DESKTOP - APPLICATION USING FOR UPGRADE FIRMWARE
{% endembed %}

{% embed url="<https://github.com/Gremsy/PixySM-Firmware/releases/tag/v7.8.6_Official>" %}
**PIXY MR - FIRMWARE VERSION**
{% endembed %}

{% embed url="<https://github.com/Gremsy/PixySM-Firmware/releases/tag/v7.7.3_Official>" %}
**PIXY SM -FIRMWARE VERSION**
{% endembed %}

* For Pixy SM and MR, Gremsy has made a profile gimbal corresponding file for each lens (.xml file)

## TROUBLESHOOTING

#### 1. **gTune Displays “DISCONNECTED”**

**Issue:**\
gTune software shows “DISCONNECTED” even after connecting the gimbal via USB.

**Solution:**

* Check **Device Manager** to confirm if **Silicon Labs CP210x USB to UART Bridge (e.g., COM3)** is recognized.
* Make sure the gimbal's mode switch is turned to **“G” (gimbal)** position.
* Ignore the gimbal's operational status (e.g., LEDs or movement).
* Then, proceed with the **normal firmware upgrade** process in gTune.

***

#### 2. **Strong Vibration During Operation**

**Issue:**\
Gimbal exhibits strong vibration after startup or during movement.

**Solution:**

* Import the correct **gimbal profile for the corresponding lens** using gTune.
* If vibration persists:
  * Gradually reduce the **Stiffness** values by **5 units at a time** until vibration decreases or stops.


---

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