The latest lab file on our download server, "fritzrepeater-XXXX-Labor-xxxx.zip", contains
- the lab version for your FRITZ!Repeater
- this "infolab-en.txt" file with important information on this lab version
- information, feedback options, and the file at en.fritz.com/fritz-lab


New and improved with FRITZ!OS 8.20

- NEW: Smart Networking (1)
- NEW: Simplified access to the user interfaces of FRITZ!Repeaters (2)
- several corrections and stability improvements


(1) Smart Networking
In a home network consisting of a FRITZ!Box and more than one FRITZ!Repeater, the W-Fi connections of the repeaters are re-evaluated and optimized whenever changes are made in the home network or a repeater is restarted. Example: A FRITZ!Repeater is already connected to the home network. A second FRITZ!Repeater is added and connected directly to the FRITZ!Box. It can then be moved and plugged into the desired location. The repeaters now re-evaluate the situation and decide whether the new repeater should connect to the first repeater, or whether it should remain connected to the FRITZ!Box.
Requirement: FRITZ!OS 8.10 is installed on the FRITZ!Box and all of the FRITZ!Repeaters. This option can be disabled in the FRITZ!Box user interface under 'Home Network > Mesh > Mesh Settings'.

(2) Simplified access to the user interfaces of FRITZ!Repeaters
When switching from the FRITZ!Box user interface to the user interface of a FRITZ!Repeater in the Mesh, it is not necessary to re-enter any login data (single-sign-on).
Requirement: FRITZ!OS 8.10 is installed on the FRITZ!Box and all of the FRITZ!Repeaters.

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# Improvements within FRITZ!Labor with -130387

Improvement - When setting up international products, there is no reboot required anymore when language or country are changed
Fixed - "Find New FRITZ!OS" could be run in the user interfaces of wireless repeaters connected to routers that are not FRITZ!Boxes
Fixed - Energy monitor did not show values in some cases
Fixed - Instead of the model name only "FRITZ!Box" was shown as the name of the router device
Fixed - When using Wi-Fi crossband repeating, the wrong Wi-Fi band was used in rare cases

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Additional Feedback on FRITZ!OS
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In addition to direct feedback in our lab area en.fritz.com/fritz-lab, there is an additional feedback function in the user interface which provide information. We have automated the processing of feedback supplied by this function.

Wi-Fi feedback via "Wi-Fi / Wi-Fi Network": Feedback icon after the clients

Information on the Lab update:
============================

This FRITZ! Lab firmware is a beta version. We've tested it in standard environments before release, but it may still result in bugs. FRITZ is not liable for any damages that may arise from the use of the Lab version.

Information on working with Lab versions

We appreciate any feedback from our users, which can be submitted at: en.fritz.com/fritz-lab. This page also lists all of the current FRITZ! Lab versions with corresponding feedback areas.

Before you start testing the Lab version

1) You haven't installed the latest firmware for your FRITZ!Box yet? You first need to update the firmware to the latest release.
2) Save your current settings under "System / Backup". The saved settings will be needed if you want to switch back from the Lab firmware back to the release firmware.


Testing the Lab version

Once the latest FRITZ!OS version has been installed on your FRITZ!Repeater and you've saved your current settings, you can begin testing.

1) Unzip the "fritzrepeater-yyyy-LabBETA-xxxxx.zip" file.
2) Use the FRITZ!Repeater user interface to install the update:
- Select "View: Advanced" in the footer.
- Click "Update" in the "System" menu.
- Switch to the "FRITZ!OS File" tab.
- Follow the instructions displayed on the screen.
- Enter the path to the Lab firmware and the name of the Lab file (FRITZ.Repeater_xxxx-0x.xx-xxxxx-Labor.image) in the input field.
3) The Lab version is installed on the FRITZ!Repeater. The FRITZ!Repeater will then restart.


Restoring your device to how it was before testing
You can switch back to the official FRITZ!OS at any time under "System > Update > FRITZ!OS Version" or reset the FRITZ!Repeater back 
to the official FRITZ!OS using the enclosed Windows program "recover.exe" (included in the Lab package).

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  FRITZ GmbH 2026. All rights reserved.

This FRITZ firmware package contains files that are distributed under various licenses, in particular under an proprietary license 
or an open-source license (GNU General Public License, GNU Lesser General Public License or FreeBSD License). For details on the various 
licenses, see the "license.txt" file (https://download.avm.de/fritzbox/license.txt).
The source code of the files distributed as open source can be requested in writing to fritzbox_info@avm.de.

FRITZ grants the non-exclusive right to use this firmware package, which is supplied exclusively in object code format. 
The licensee may create only one copy of the software, which may be used exclusively for backup purposes.
FRITZ reserves all intellectual property rights except as expressly granted herein. In particular, without previous approval in writing 
and except as permitted by law, this FRITZ firmware packet may not be reproduced, distributed or in any other manner made publicly accessible, nor may it be edited, disassembled, reverse engineered, translated, decompiled or otherwise "opened" in whole or in part, and subsequently reproduced, distributed or made publicly accessible
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KSH 130326