# CODESYS Installation (Working with previous FW versions)

**URL:** <https://www.wago.community/t/codesys-installation-working-with-previous-fw-versions/669>\
**Category:** CODESYS\
**Tags:** pfc200, how-to, edge-controller, codesys, cc100\
**Created:** [November 9, 2023, 6:33pm UTC](https://www.wago.community/t/codesys-installation-working-with-previous-fw-versions/669 "2023-11-09T18:33:16Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![MikePsaltis](https://sea2.discourse-cdn.com/flex016/user_avatar/www.wago.community/mikepsaltis/32/47_2.png) [@MikePsaltis](https://www.wago.community/u/MikePsaltis)\
**Post date:** [November 9, 2023, 6:33pm UTC](https://www.wago.community/t/codesys-installation-working-with-previous-fw-versions/669/1 "2023-11-09T18:33:16Z")

</div>

Hello Community,

I recently created a fresh VM, and installed CODESYS SP19 Patch 2. I wanted to be able to use this installation with previous FW versions that are not included in the v2.0.4.2 (FW26) WAGO Device Description. After installing v2.0.4.2 I was unable to install previous Device Descriptions and saw this message in the CODESYS Installer:

" The packages which should be installed are already installed in the target installation"

![image](https://us1.discourse-cdn.com/flex016/uploads/wago/original/1X/01cd1f91df04a6b686dc521cff5f2d6660ee60db.png)

In order to use this CODESYS installation with previous FW versions I completed these steps:

1. CODESYS Installer - Uninstall Device Description v2.0.4.2
2. CODESYS Installer - Install Device Description CODESYS v2.0.1.7
3. CODESYS Installer - Install Device Description CODESYS v2.0.2.9 (Updates and adds to previous)
4. CODESYS Installer - Install Device Description CODESYS v2.0.4.2 (Updates and adds to previous)

I can use previous firmware with this installation.

 ![image](https://us1.discourse-cdn.com/flex016/uploads/wago/original/1X/52ff51e642007d271ad02fc94e629b8334b9c13f.png)