The Update Image "FRITZ.Powerline_1240_AX*.image" in this folder enthält contains the latest FRITZ!OS (Firmware) for the FRITZ!Powerline 1240 AX.

**Attention:** This update file is only intended for use with FRITZ!Powerline 1240 AX!
Please follow the instructions at the end of this file to install the update.


```
Product: 	FRITZ!Powerline 1240 AX
Version:        FRITZ!OS 8.20
Language:       English, French, Italian, Spanish, Polish, German
Release Date:   17.12.2025
```

**New and improved with FRITZ!OS 8.20**
- NEW: Smart Networking (1)
- NEW: Simplified access to the user interfaces of FRITZ!Powerline 1240 AX (2)
- NEW: Password for all devices in the powerline network can be changed with a single click (3)
- Improved: Information on saving energy displayed when setting reduced bandwidth/SISO (4)
- 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!Powerline 1240 AX
When switching from the FRITZ!Box user interface to the user interface of a FRITZ!Powerline 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!Powerline 1240 AX.

(3) Password for all devices in the powerline network can be changed with a single click
Previously, the network password had to be changed for every powerline device, which made changing a password for security reasons cumbersome and prone to errors. Further, the user had to make sure that the device connected directly to the FRITZ!Box was changed last, since otherwise it was not possible to access devices connected via powerline.

(4) Information on saving energy displayed when setting reduced bandwidth/SISO
FRITZ!Powerline devices with MIMO capability have an automatic mechanism installed to save energy and prevent heat build-up which switches the powerline connection from MIMO down to SISO independently of the requested transmission rates. Information summarizing this function is displayed in the GUI. This information is also displayed when the device is switched to SISO permanently.


**Improvements and changes with FRITZ!OS 8.20**

- **Improved** Improved interoperability to several devices
- **Improved** Powerline information on saving energy displayed when setting reduced bandwidth/SISO
- **Improved** Adaptions for reliable connection display of Powerline devices in the mesh network
- **Changed** For improved compatibility with older wireless devices, security settings can be adjusted on the "Wi-Fi > Security" page
- **Changed** Incongruous information text for configuration of the Wi-Fi guest access on the Mesh Repeater removed
- **Changed** Text reference to selection of "WPA2 + WPA3" Wi-Fi encryption removed
- **Fixed** Display of Wi-Fi properties of a registered wireless device was in rare cases incorrect
- **Fixed** FRITZ!Powerline 1240 AX that were logged into the guest network were not marked as "Wi-Fi guests"
- **Fixed** WLAN LED flashed for an unnecessarily long time after change to a Wi-Fi setting when no guest access was active
- **Fixed** When 5-GHz channels were checked for radar (DFS), no wait cursor was displayed under these channels in the user interface

---

**History:**

**New Features with FRITZ!OS 7.5x**
- Mesh Wi-Fi now with dynamic smart repeating for better performance in the home network
- Improved radar detection and Wi-Fi auto channel detection
- The country and language settings of the FRITZ!Box (Mesh Master) are automatically transmitted to FRITZ!Powerline
- 24-hour information summary about energy savings through automatic switching to an energy-saving transmission mode
- Support for the simplified replacement of a FRITZ!Box with new wizard (FRITZ!Box with FRITZ!OS 7.55)

**Improvements and changes with FRITZ!OS 7.58**
- **Fixed:** In certain cases, interference occurred when using media receivers on the LAN port of the repeater
- **Fixed:** Network devices were sometimes incorrectly displayed as belonging to a guest network
- **Fixed:** Packets were lost when the connection of a Wi-Fi band (2.4 or 5 GHz) was cleared
- **Fixed:** The network connection could get lost permanently when devices with a specific chipset were used
- **Fixed:** Robustness when transmitting very small network packets (UDP) was increased
- **Fixed:** Sometimes repeater was briefly displayed with an incorrect IP address in the FRITZ!Box
- **Fixed:** Wi-Fi connection was only established on one band (2.4 or 5 GHz) on FRITZ! products with Wi-Fi 7 if different names (SSIDs) were given to the two bands in the FRITZ!Box
- **Improved:** higher Powerline stability
- **Improved:** better Mesh integration

**Improvements and Changes with FRITZ!OS 7.57**
- **Fixed** stability and security increased

**Improvements and Changes with FRITZ!OS 7.56**
- **Improved** - Optimized system performance and stability
- **Improved** - Corrections to details in the settings for individual names for the Wi-Fi networks
- **Improved** - Improvements for the channel selection settings
- **Fixed** - Repeaters sometimes used external NTP servers for initial time determination even if the upstreamFRITZ!Box offered an NTP server
- **Fixed** - Mesh Repeater operating mode: The "Select Wi-Fi Network" list did not display invalid Wi-Fi network names (SSID)
- **Fixed** - When adoption of settings was disabled, the repeater still adopted the "Wi-Fi" off from the Wi-Fi schedule (LAN bridge mode)
- **Fixed** - Reboot of the FRITZ!Repeater if the FRITZ!Box changes the Wi-Fi channel width from 160 to 40 MHz
- **Fixed** - Temporary decreased Wi-Fi performance after a reboot under certain conditions
- **Fixed** - WiFi GreenAP mode did not activate when WiFi was enabled an disabled several times
- **Fixed** - WiFi airtime detection could yield wrong results for 2,4 GHz
- **Fixed** - Problems while streaming live media (IPTV etc.) fixed
- **Fixed** - Incorrectly displayed Powerline MAC address under "Powerline"

---

---

**Enabling the Mesh Function**

To check whether a FRITZ! product is enabled for Mesh, see the "Mesh Overview" of the FRITZ!Box (the Mesh Master) under "fritz.box / Home Network / Mesh".
Here the products in the Mesh are designated with a corresponding "Mesh active" icon.

A FRITZ!Repeater or FRITZ!Powerline adapter can be enabled for Mesh in various ways:
- If the FRITZ!Repeater or FRITZ!Powerline adapter has the factory settings configured and is being connected with the FRITZ!Box via WPS for the first time, it will be automatically enabled for Mesh.
- If the FRITZ!Repeater or FRITZ!Powerline adapter is already connected, but not enabled for Mesh, it is added to the Mesh by pressing a button on the product to be integrated and a button on the FRITZ!Box.
On the FRITZ!Box, use the button that initiates WPS: depending on the model, press the "Connect" or "WPS" button briefly, or the "WLAN/WPS" button for 6 seconds

Detailed instructions, additional information and the answers to frequently asked questions about Mesh are presented at en.avm.de/mesh-faq.


We recommend to always keep all your FRITZ!-Products up to date as every update also improves security features of FRITZ!Box and FRITZ!Repeater

---

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This AVM firmware package contains files that are propagated under different licenses, in particular under a license held by AVM or under an open-source license (namely the 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 propagated as open source files can be obtained upon a written request to fritzbox_info@avm.de. 

AVM grants the non-exclusive right to use this AVM 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 use.
AVM reserves all rights that are not expressly granted to the licensee. Without previous approval in writing, and except for in cases permitted by law, it is particularly forbidden for this AVM firmware packet to be
- copied, propagated, or in any other manner made publicly accessible, or
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GHA 17.12.2025