Issue: The FRITZ!OS update fails with the message "An unspecified error occurred during the update. (5)". Remedy: The specified file is no update file. It could be the fritzbox-*-lab*.zip file, which contains the lab update file. Unzip the downloaded ZIP archive before starting the update and select the lab update file from the unzipped files (FRITZ!Box-Lab-xxxx.image). Detailed instructions for...
> https://en.avm.de/fritz-lab/fresh-from-development/known-issues/
DSL / Network Compatible with any connection You can use your FRITZ!Box with any IP-based DSL connection (ADSL2+ and VDSL including supervectoring). Alternatively, you can run it behind a fiber optic or cable modem and simply integrate it into an existing Wi-Fi network. It can also be operated with a 4G/3G dongle. High-speed thanks to VDSL supervectoring With the FRITZ!Box you are well prepared...
> https://en.avm.de/products/fritzbox/fritzbox-7690/details/
Interfaces 1 x DSL connection, supports VDSL (including supervectoring and ADSL2+) 1 x 2.5 gigabit WAN/LAN port, can also be used as a 2.5 gigabit LAN port (IEEE 802.3bz standard, NBASE-T) 1 x 2.5 gigabit LAN port (IEEE 802.3bz standard, NBASE-T) 2 x gigabit LAN (10/100/1000BASE-T) Wi-Fi 7 on 2.4 and 5 GHz USB 2.0 port for storage media and dongles DECT base station for up to six handsets 2 x a/b...
> https://en.avm.de/products/fritzbox/fritzbox-7690/technical-specifications/