---
title: "ST Loader problems"
url: "https://maker.wiznet.io/forum/10978"
markdown_url: "https://maker.wiznet.io/forum/10978/md"
type: "Forum topic"
category: "General"
author: "bangbh"
created: "2015-04-16T23:58:34+09:00"
last_activity: "2017-05-04T08:35:18+09:00"
language: "en"
views: 555
replies: 1
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# ST Loader problems

## Question

Asked by bangbh on 2015-04-16 in General.

Hi, I’m Peter employee of wiznet.

There is a problem with some version of ST loader program.

The problem is some version of ST loader program cannot write to the specified address.

They write always from the address of 0x0800000.

When you use the Wiz550web module, if boot code operation well but app code not, please try different version of ST loader.

Thank you.

## Replies

### Reply 1 by irina, 2015-04-17

Thank you for your advice.

Regards,
Eric.

---

Source: https://maker.wiznet.io/forum/10978