---
title: "Problem during WIZ107SR FirmwareUpgrade"
url: "https://maker.wiznet.io/forum/10851"
markdown_url: "https://maker.wiznet.io/forum/10851/md"
type: "Forum topic"
category: "Serial-to-Ethernet & ConfigTool"
author: "christianaichinger"
created: "2015-02-16T22:48:33+09:00"
last_activity: "2017-05-04T08:38:45+09:00"
language: "en"
views: 542
replies: 4
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# Problem during WIZ107SR FirmwareUpgrade

## Question

Asked by christianaichinger on 2015-02-16 in Serial-to-Ethernet & ConfigTool.

Hi,

I experienced some troubles while upgrading my WIZ107SR to formware 4.04.
When I try to upload the *.bin-File a message appears, that says “The length of the firmware file should be less than 64K bytes.”.
As you can see on the screenshot, the firmware file has a size of 60 K.

Any help would be appreciated.

Regards, Christian

[![](https://maker.wiznet.io/forum_uploads/wiznet/original/1X/802fcecd8db9c50b69497dd485b2786a07ed74de.png) 1106×612 85.5 KB](https://maker.wiznet.io/forum_uploads/wiznet/original/1X/802fcecd8db9c50b69497dd485b2786a07ed74de.png)

## Replies

### Reply 1 by irina, 2015-03-01

Hi, Christian.
Please check the WIZ107SR H/W revision.
The firmware version after v3.04 is for WIZ107SR H/W revision 1.3 / 1.4 only.
The latest firmware version of WIZ107SR revision 1.1 is v2.20.
Please try to check again.
Thanks.

Regards,
Eric.

### Reply 2 by Haspel, 2015-12-12

the problem after WIZ107SR Firmware Upgrade is no longer visible, now we have 5modules 5 malfunction modules. Is there a way to describe this new?
rev 1.1

### Reply 3 by irina, 2015-12-13

Hi, Hespel.
what version firmware did you use?
as I mentioned above, the WIZ107SR rev.1.1 module should be used to firmware version 2.20.

### Reply 4 by Haspel, 2016-05-04

we use the version WIZ107SR _FW_V220 from 12/07/2013 this has be installed without problems

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Source: https://maker.wiznet.io/forum/10851