---
title: Software Request | Q-Lab Corporation
description: Upgrade or download the most recent software release.
image: https://pages.q-lab.com/hubfs/digital_download_background.jpg
---

[![Tagline\_CMYKBlue\_Logo\_Left](https://pages.q-lab.com/hs-fs/hubfs/Logos%20and%20Assets/Tagline_CMYKBlue_Logo_Left.png?width=300&height=89&name=Tagline_CMYKBlue_Logo_Left.png "Tagline_CMYKBlue_Logo_Left")](https://www.q-lab.com)

![digital\_download\_background](https://pages.q-lab.com/hs-fs/hubfs/digital_download_background.jpg?width=2000&name=digital_download_background.jpg "digital_download_background")

# Q-Lab Tester Software

[Request Software](https://pages.q-lab.com/software#top)

## Q-Lab Tester Software

This page lists the most recently-released software versions for QUV, Q-SUN, and Q-FOG testers.

These apply to all Q-Lab testers with a Gen 3 & Gen 4 main controllers, which can be identified by the presence of a blue circuit board. Gen 4 controllers feature dual, full-color touchscreen displays.

Please contact our repair team by phone at +1-440-835-8700, by [email](mailto:repair@q-lab.com), or by completing the form. Q-Lab Repair personnel will contact you to discuss your situation and, when applicable, provide you with necessary software files and instructions to perform an update.

### Complete This Form to Obtain Software Files or For Additional Information.

**Required** updates must be installed immediately, as they address issues that may affect strongly tester performance and/or pose a safety concern.

**Recommended** updates should be installed as soon as possible, as they offer a significant improvement and/or make an important correction.

**Optional** updates should not be installed unless Q-Lab personnel have directed you to do so.

![QUV\_Gen4\_200](https://pages.q-lab.com/hubfs/QUV_Gen4_200.jpg "QUV_Gen4_200")

### QUV Software

| Version | Update Type | Description |
| --- | --- | --- |
| 5.400 | Gen 4 | Recommended version for QUV and QCT testers with Gen 4 main controller. Supports Universal Water Repurification System and TUV-421 Lamps.   Includes all updates and 17 languages. |
| 4.350 | Gen 3 | Recommended version for QUV testers with Gen 3 main controller. |

![Q-SUN\_Xe-1\_Xe-2\_Xe-3\_Xe-8\_Group\_v2](https://pages.q-lab.com/hs-fs/hubfs/Q-SUN_Xe-1_Xe-2_Xe-3_Xe-8_Group_v2.png?width=990&height=727&name=Q-SUN_Xe-1_Xe-2_Xe-3_Xe-8_Group_v2.png "Q-SUN_Xe-1_Xe-2_Xe-3_Xe-8_Group_v2")

### Q-SUN Software

| Version | Update Type | Description |
| --- | --- | --- |
| **8.030** | **Gen 4** | Recommended version for Q-SUN testers with Gen 4 main controller. Supports all models of Q-SUN, including Xe-8 and new Xe-3 "X" models and is compatible with Universal Water Repurification System.  Includes all updates and 17 languages. |
| 3.360 | Gen 3 | Recommended version for Q-SUN Testers with Gen 3 main controller |

![q-fog gen4](https://pages.q-lab.com/hubfs/q-fog%20gen4.jpg "q-fog gen4")

### Q-FOG Software

| **Version** | **Update Type** | **Description** |
| --- | --- | --- |
| **6.420** | **Gen 4** | Recommended version for Q-FOG testers with Gen 4 main controller. Includes all updates, overtemperature protection, shower flow normalization, ambient damper and TSSB optimization, and 17 languages. |
| 5.480 | Gen 3 | Recommended version for Q-FOG Testers with Gen 3 main controller |

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