---
title: "How to use Surf 5 as S2E"
url: "https://maker.wiznet.io/jaden/projects/how-to-use-surf-5-as-s2e/"
markdown_url: "https://maker.wiznet.io/jaden/projects/how-to-use-surf-5-as-s2e/md"
type: "WCC: WIZnet Created Content"
author: "jaden kim"
editor: "WIZnet"
editor_url: "https://maker.wiznet.io/"
original_author: "jaden kim"
published: "2024-05-27"
language: "en"
likes: 0
views: 887
comments: 0
source: "WIZnet Makers (https://maker.wiznet.io/)"
---

# How to use Surf 5 as S2E

> How to use Surf 5 as S2E

Original author: jaden kim

## Article

### How to use Surf5 as S2E[​](https://docs.wiznet.io/Product/Open-Source-Hardware/surf5/getting-started/surf5-s2e#how-to-use-surf5-as-s2e)

This guide should be done after the user has read and worked through guides [How to install USB driver](https://docs.wiznet.io/Product/Open-Source-Hardware/surf5/getting-started/install-usb-driver) and [How to use ISP tool](https://docs.wiznet.io/Product/Open-Source-Hardware/surf5/getting-started/flashing-surf5).

## 1. Download WIZ750SR-1xx FW

Download [WIZ750SR-1xx FW](https://github.com/Wiznet/WIZ750SR/releases) last verson. You need WIZ750SR-1xxvxxx_incl_Boot.bin file that combined App and Boot.

## 2. Flashing Surf5

Enter Boot mode for using ISP tool

![](https://docs.wiznet.io/img/osh/surf5/surf5_boot.png)

Press and hold the Boot SW and apply power, or press and hold the BOOT SW while power is applied and press the RESET SW shortly.

![](https://docs.wiznet.io/img/osh/surf5/Driver_install.png)

Check The com port number of Surf5 in Device manager.
The com port number can be differnet depending on the PC you're connecting to.

![](https://docs.wiznet.io/img/osh/surf5/surf5_ISP.png)

Select Serial port, set Baud Rate to 115200 and click **Open**.
If your Surf5 connect with ISP tool successfull, you can see **Serial Open Complete** message on the left bottom of ISP tool.

![](https://docs.wiznet.io/img/osh/surf5/surf5_bin.png)

After ISP tool is connected, press the Browse button to select the binary file(WIZ750SR-1xxvxxx_incl_Boot.bin).

![](https://docs.wiznet.io/img/osh/surf5/surf5_download.png)

When you press the **Start all steps** button, Surf5 will erase old data and download the binary file you selected.
When the download completes successfully, the Download complete popup appears.

## 3. Enter MAC Address

![](https://docs.wiznet.io/img/osh/surf5/mac.png)

When you receive the message **INPUT FIRST MAC?**, type **MC00:08:DC:xx:xx:xx$0d$0a** to enter your MAC.

![](https://docs.wiznet.io/img/osh/surf5/status.png)

After Enter the MAC address, you can see the status message.

## 4. Set Surf5 PA00 pin to LOW

![](https://docs.wiznet.io/img/osh/surf5/check_link.png)

In the WIZ750SR-1xx FW, the W7500 uses PA00 to read the linkup signal from the IP101GRI (PHY IC) to verify linkup.
So the WIZ750SR-1xx modules are connected to Surf5's PA00 with a link signal from the IP101GRI.

![](https://docs.wiznet.io/img/osh/surf5/PA00.png)

However, the Surf5 does not have a Link signal connected to the PA00, and the Link signal from the IP101GRI(PHY) is not connected to the connector. Therefore, You need to force the Surf5 into a linked-up state by connecting the PA00 to GND to drive the S2E FW. (This will be improved in next revision by connecting the link signal to a connector)

## 5. Search Surf5

![](https://docs.wiznet.io/img/osh/surf5/config.png)

Search Surf5 using Wizconfig Tool. It is normal for Surf5 to be detected as WIZ750SR-1xx.

![](https://docs.wiznet.io/img/osh/surf5/dtr.png)

If you don't use DTR,DSR and only use UART TX and RX, please set the Status pin as shown in the picture.

---

Source: https://maker.wiznet.io/jaden/projects/how-to-use-surf-5-as-s2e/