> 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/tiny-gimbal/g-hadron/upgrade/upgrade-g-hardon-mainboard-firmware.md).

# UPGRADE G-HARDON MAINBOARD FIRMWARE

## **Flashing G-Hadron Payload Application**

**1. Download** [**Latest Gremsy Flash Tool**](https://github.com/Gremsy/GremsyFlashTools_Public/releases/latest)

**2. Connecting devices**

* Powering the G-Hadron MainBoard and waiting for about 70 seconds for the device to ready.
* Connect the mainboard to the PC via a type-C USB cable through the HOST socket

 ![](https://bookstack.gremsy.vn/uploads/images/drawio/2024-05/drawing-16-1717137657.png)\
\
**3. Flash SoM Payload G-Hadron**\
Open the Gremsy Flash Tools, then choose "PAYLOAD G-HADRON"

<figure><img src="/files/shsVu2F7rAKMLP287dcH" alt=""><figcaption></figcaption></figure>

* Download G-Hadron Payload release from [Github link](https://github.com/Gremsy/GHadron-Payload-Bin/releases/latest)
* Choose "OPEN FILE" and browse the "G-Hadron\_x.x.x.zip" file

<figure><img src="/files/59E394BWn0w93M7uAk2J" alt=""><figcaption></figcaption></figure>

* On the Gremsy Flash Tools, choose "CHECK DEVICE", then the connection successfully will show up.

<figure><img src="/files/UE1z7YKw4MLy06cl15O7" alt=""><figcaption></figcaption></figure>

* Choose "FLASH PAYLOAD G-HADRON" and wait for 3-5 minutes for the process to complete

<figure><img src="/files/pFSHGuvw5udAq7MH2Pqk" alt=""><figcaption></figcaption></figure>


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