The "FRITZ.Box_7520_B-xx.xx-recover.exe" file contains a recovery program
for the given FRITZ!Box. This Windows program serves exclusively to restore
the FRITZ!Box given in the file name. It may not be used on a FRITZ!Box of
a different type.

Comprehensive instructions:
https://en.fritz.com/service/knowledge-base/dok/FRITZ-Box-7520/160_Restoring-the-FRITZ-OS-of-your-FRITZ-Box/


© FRITZ! GmbH 2004-2026. All rights reserved.

This FRITZ! firmware package contains files that are propagated under different
licenses, in particular under a license held by FRITZ! or under an open-source
license (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.

FRITZ! grants the non-exclusive right to use this FRITZ! 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.
FRITZ! reserves all intellectual property rights except as expressly granted
herein. Without previous approval in writing, and except for in cases
permitted by law, it is particularly forbidden for this FRITZ! firmware packet
to be
- copied, propagated, or in any other manner made publicly accessible, or
- processed, disassembled, reverse engineered, translated, decompiled or in
  any other manner "opened" and subsequently copied, propagated or made
  publicly accessible in any other manner.