---
title: "Firmware Upload Error"
url: "https://maker.wiznet.io/forum/12920"
markdown_url: "https://maker.wiznet.io/forum/12920/md"
type: "Forum topic"
category: "Serial-to-Ethernet & ConfigTool"
author: "kslam1980"
created: "2018-05-29T01:45:43+09:00"
last_activity: "2018-06-29T01:08:44+09:00"
language: "en"
views: 682
replies: 1
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# Firmware Upload Error

## Question

Asked by kslam1980 on 2018-05-29 in Serial-to-Ethernet & ConfigTool.

I’m trying to upload the firmware to the module, however i got two messages from the Configuration Tool. The first message is the info message - “firmware upload over!”. The second message is the firmware updating error message - “an existing connection was forcibly closed by the remote host”.

So, is the firmware uploaded successfully or something wrong has goes wrong?

## Replies

### Reply 1 by rena, 2018-06-29

Hi, [@kslam1980](https://maker.wiznet.io/u/kslam1980).

![](https://avatars.discourse-cdn.com/v4/letter/k/90db22/48.png) kslam1980:

> The first message is the info message - “firmware upload over!”

If that pop-up appears, the firmware update is completed successfully.
The updated process can be checked through the serial debug messages.

I will check for the cause of the second pop-up message.

Thank you.

---

Source: https://maker.wiznet.io/forum/12920