> 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/payloads/general/upgrade-firmware-and-software/upgrade-payload-software/vio-payload/using-gremsyflashtools.md).

# Using GremsyFlashTools

Zio Payloads and Vio Payloads.

## 1. Using GremsyFlashTools <a href="#bkmrk-1.-using-gremsyflash" id="bkmrk-1.-using-gremsyflash"></a>

### **1.1 Install the latest version of GremsyFlashTools**

* Follow [link download](https://github.com/Gremsy/GremsyFlashTools/releases)

### **1.2 Download the SoM's firmware for the Vio/Zi**o **payload**

* Recommend using the latest version.
* Download for [VIO PAYLOADS](https://github.com/Gremsy/Vio-Software/releases)
* Download for [ZIO PAYLOADS](https://docs.gremsy.com/payloads/zio/download#bkmrk-gremsy-flash-tools-v-1)

### **1.3 Do updating**

* Open the firmware package, Please open the zip file and do not unzip.

<figure><img src="https://bookstack.gremsy.vn/uploads/images/gallery/2024-01/scaled-1680-/image-1705907201593.png" alt=""><figcaption></figcaption></figure>

* Checking the connection between GremsyFlashTools app and the Vio/Zio payloads.

<figure><img src="https://bookstack.gremsy.vn/uploads/images/gallery/2024-01/scaled-1680-/image-1705907251966.png" alt=""><figcaption></figcaption></figure>

* Waiting for the updating process to finish.

<figure><img src="https://bookstack.gremsy.vn/uploads/images/gallery/2024-01/scaled-1680-/image-1705907285611.png" alt=""><figcaption></figcaption></figure>

* Flash Success.

<figure><img src="https://bookstack.gremsy.vn/uploads/images/gallery/2024-01/scaled-1680-/image-1705913680937.png" alt=""><figcaption></figcaption></figure>


---

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