FRITZ!Box 4040
AVM FRITZ!Box 4040 WLAN Router (AC1300, USB 3.0, Mediaserver)

Thumbnail for the AVM FRITZ!Box 4040 router with Gigabit WiFi, 4 N/A ETH-ports and
0 USB-ports

The AVM FRITZ!Box 4040 router has Gigabit WiFi, 4 N/A ETH-ports and 0 USB-ports. It has a total combined WiFi throughput of 1300 Mpbs.
It is also known as the AVM AVM FRITZ!Box 4040 WLAN Router (AC1300, USB 3.0, Mediaserver).It also supports custom firmwares like: LEDE Project

Quick links:
Default password/Login
Flashing Custom Firmwares

FRITZ!Box 4040 router specifications (specs)

System specs
CPU: 710 MHz
RAM: 256 MiB
Flash: 32 MiB
Custom firmwares: LEDE Project

Connectivity
WiFi: Gigabit (abgn+ac)
WiFi bands: n/a
WiFi throughput: 1300 Mpbs
WAN: 1 x N/A port
ETH: 4 x N/A ports
USB-ports: 0

Hard reset instructions for AVM FRITZ!Box 4040

If your FRITZ!Box 4040 router is not working as it should, dropping connections or not being responsive, you should first do a reset of the router to see if the problems persist. Other scenarios where you might want to reset your router is if you've forgotten the password or misconfigured it and can't get access anymore.
Your can reset your AVM FRITZ!Box 4040 in the following way(s):

The 30-30-30 reset

There are no specific instructions for this model yet, but you can always do the 30-30-30 reset as follows:

When router is powered on, press the reset button and hold for 30 seconds. (Use a paper clip or something sharp)
While holding the reset button pressed, unplug the power of the router and hold the reset button for 30 seconds
While still holding the reset button down, turn on the power to the unit again and hold for another 30 seconds.

This process usually works for resetting any router to it's factory setting. If that doesn't work be sure to check out the questions and answers incase someone else has had similar problems resetting their router.

Note: It is worth reading more about how to reset routers with the 30 30 30 reset and what the risks and considerations are when resetting your router this way, instead of just rebooting it.

Default factory settings for AVM FRITZ!Box 4040

If you have performed a reset of your FRITZ!Box 4040 device or not changed the defaults, you should be able to access it with the following settings:

Default Network name (SSID): FRITZ!Box 4040
Default subnet mask: 255.255.255.0

Note: If you are using the default settings you should change them to increase security and prevent unathorized access to your network.

FRITZ!Box 4040 Firmwares

Staying up to date with the latest firmware is a good idea to keep your router even more secure from various security flaws.
If you want to squeeze a little bit of extra functionality out of your router, consider flashing an open-source firmware like dd-wrt, openWRT or LEDE. Flashing a custom ROM can greatly increase the stability and functionality of your old router.
Following are the firmwares that we have identified existing for the AVM FRITZ!Box 4040:

Flashing LEDE Project on the FRITZ!Box 4040

The AVM FRITZ!Box 4040 is also supported by the LEDE Project.
To install LEDE aquire the correct firmware from their Firmware downloads page and then follow the instructions on their Quick Start Guide
Note: Make sure to read the LEDE wikis carefully before flashing.