---
title: "Update Issue"
url: "https://maker.wiznet.io/forum/14070"
markdown_url: "https://maker.wiznet.io/forum/14070/md"
type: "Forum topic"
category: "Wireless"
author: "Leandro Gagliardi"
created: "2020-11-17T13:17:51+09:00"
last_activity: "2020-12-03T00:36:02+09:00"
language: "en"
views: 441
replies: 1
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# Update Issue

## Question

Asked by Leandro Gagliardi on 2020-11-17 in Wireless.

Hi,
I have an issue when I want to update the firmware of my WizFi250. I configure the kit as I show in the figure above:

[![Issue](https://maker.wiznet.io/forum_uploads/wiznet/original/2X/7/79551088bd183f9413b586b2252b160aeccca14f.png) Issue699×612 43.5 KB](https://maker.wiznet.io/forum_uploads/wiznet/original/2X/7/79551088bd183f9413b586b2252b160aeccca14f.png)

Message from WIZSmartScript:

Move directory to WizFi250\Tools
G:\Mi unidad\Leandro\Doctorado\Subjects\IoT\TP_WIFI\FirmwareUpdate1.0.4.9>cd WizFi250\Tools

G:\Mi unidad\Leandro\Doctorado\Subjects\IoT\TP_WIFI\FirmwareUpdate1.0.4.9\WizFi250\Tools>

Test for checking program mode
G:\Mi unidad\Leandro\Doctorado\Subjects\IoT\TP_WIFI\FirmwareUpdate1.0.4.9\WizFi250\Tools>wizfi250_flashprogram.exe COM12 3 dummy
No se pudo iniciar la aplicaci¢n; la configuraci¢n en paralelo no es correcta. Consulte el registro de eventos de la aplicaci¢n o use la herramienta sxstrace.exe de la l¡nea de comandos para obtener m s detalles.

G:\Mi unidad\Leandro\Doctorado\Subjects\IoT\TP_WIFI\FirmwareUpdate1.0.4.9\WizFi250\Tools>

Writing the DCT.
G:\Mi unidad\Leandro\Doctorado\Subjects\IoT\TP_WIFI\FirmwareUpdate1.0.4.9\WizFi250\Tools>wizfi250_flashprogram.exe COM12 0 …\…\AppFWFile\1.0.4.9\dct.bin …\…\AppFWFile\1.0.4.9\APP.bin
No se pudo iniciar la aplicaci¢n; la configuraci¢n en paralelo no es correcta. Consulte el registro de eventos de la aplicaci¢n o use la herramienta sxstrace.exe de la l¡nea de comandos para obtener m s detalles.

G:\Mi unidad\Leandro\Doctorado\Subjects\IoT\TP_WIFI\FirmwareUpdate1.0.4.9\WizFi250\Tools>

Writing the firmware is completed.
Change the switch to the Run Mode and reset the module

What is the mistake?

Best regards,
Leandro

## Replies

### Reply 1 by wizdaniel, 2020-12-03

Hi Leandro.
why don’t you refer to following guide to upgrade firmware using serial interface.

<https://wizwiki.net/wiki/doku.php/products:wizfi250:wizfi250pg:firmware_upgrade#serial_line-app_dct>

I guess you should check COM port & boot pin once again.
<https://wizwiki.net/wiki/doku.php/products:wizfi250:wizfi250qsg:start>
<https://wizwiki.net/wiki/doku.php/products:wizfi250:wizfi250pg:io_pin-pin_description>

---

Source: https://maker.wiznet.io/forum/14070