---
title: "WIZ550S2E F/W upload failure"
url: "https://maker.wiznet.io/forum/13878"
markdown_url: "https://maker.wiznet.io/forum/13878/md"
type: "Forum topic"
category: "Serial-to-Ethernet & ConfigTool"
author: "ostorezio"
created: "2020-06-08T14:10:26+09:00"
last_activity: "2020-06-10T23:11:32+09:00"
language: "en"
views: 813
replies: 6
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# WIZ550S2E F/W upload failure

## Question

Asked by ostorezio on 2020-06-08 in Serial-to-Ethernet & ConfigTool.

Hi All,

I’m having problems uploading F/W to a WIZ550S2E EV board.

As far as I can check, all the tftp configuration on the server are correct, I tried with two different servers (one Mac and one Linux) and multiple clients. All is well except for the WIZ550S2E card.

Strange, since a few days ago I successfully upgraded F/W on another one, same configuration, no problems at all.

What happens is that when I hit the “F/W Uploading” button, a pop-up shows the tftp server parameters, I click OK but nothing happens.

In the other board, I recall a new pop-up showing up at this point.

I checked the log on the tftp server as well as wireshark sniffer traces. It looks like the board does not even try to connect to the server.

WIZ550S2E with F/W 1.0.3 onboard and Conf Tool 1.0.3

Maybe I’m missing something trivial here.

Help would be greatly appreciated,

Ezio

## Replies

### Reply 1 by viktor, 2020-06-09

Hi Ezio,

Situation that you described is really strange.
Why don’t you try to upload F/W using Flash magic tool?
Check short guide on [GitHub - Wiznet/WIZ550S2E: Serial to Ethernet Module based on W5500 & Cortex-M0](https://github.com/Wiznet/WIZ550S2E#firmware-download)

Best regards,
Viktor

### Reply 2 by ostorezio, 2020-06-09 (in reply to reply 1)

Hi Viktor,

> Why don’t you try to upload F/W using Flash magic tool?

Well, I wouldn’t, for a number of reasons.

First off, the tool works on Windows, we don’t have a windows PC, we can choose either Linux or Mac … getting a Win PC for one upload is definitely an overkill.

Then, the procedure looks quite complex, if the F/W upload does not work with a fairy simple tool like the configuration tool, I worry that it will not work with a more complex procedure where a number of things can go wrong.

Next, our board is RS-485, not 232, does it work on 485 as well?

And last but not least, the configuration tool must work, I cannot understand why it is so complex/unreliable.

Looking forward for you excellent support,

```
 Ezio
```

### Reply 3 by viktor, 2020-06-10

Hi Ezio,

I agree with you, configuration tool must work. But in your case something is going wrong, either with hardware or with software.That’s why I propose to upload F/W using Flash magic tool.

There is version available for MAC ([Download - Flash Magic](https://www.flashmagictool.com/download.html) scroll till the end).

Generally before FW upload through TFTP board shall be factory reset. But factory reset doesn’t reset EEPROM. I would propose to you to erase and write EEPROM too using Flash magic tool.

I attach EEPROM for rewriting. Try following:

1. Rewrite EEPROM using Flash magic

2. Upload FW using Flash Magic

3. Input MAC address
   [EraseEEPROM.zip](https://maker.wiznet.io/forum/legacyFile.asp?path=uWSYCstNhT1xIUN5GDDSIFZZXxD.zip) (15.0 KB)

I understand your reasons that you mentioned, but there is no other way to solve your issue.

Best regards,
Viktor

### Reply 4 by ostorezio, 2020-06-10

'morning Viktor and thank you for your reply.

Good to know we have a flash tool for Mac, I’ll give it a try.

One question tough, modern PCs (and especially Macs) don’t have a 232 port, I have Linux boxes with RS-232, but in any case, our EV is RS-485, can we use the same procedure?

Is a serial adapter like Moxa good for RS-485 uploading of the F/W?

In any case, this is what I did trying the upload http-colon-slash-slash-bbbsw.it/download/WIZ550S2E-FWupload.mov
Did I miss some crucial step?

You mentioned that before uploading, the board must be factory rest, that means that we can use only the factory default subnet 192.168.11.0/255 for tftp upload? I’ll try that also.

Cheers,

```
   Ezio
```

### Reply 5 by ostorezio, 2020-06-10

GEEEZZZZ!!!

It was my fault. In the F/W upload popup I was not entering the password … thought it was the tftp server password.

I input the board password and this time it worked.

It would not be a bad idea to alert the user of wrong/missing password, tough.

Sorry for the inconvenience,

```
Ezio
```

### Reply 6 by viktor, 2020-06-10

Hi Ezio,

Glad you solved it. We will consider your proposal regarding alert.
Should you have any questions, let us know anytime.

Best regards,
Viktor

---

Source: https://maker.wiznet.io/forum/13878