I have tried to unpack and repack the firmware of my FB 7170 and it works great! (See: http://www.ip-phone-forum.de/showthread.php?t=175974) But what i would like to do is to integrate my own configuration file in the firmware so i can simply do a 'reset to default' with #991*15901590* to get back to my own default configuration. In the unpacked firmware there is a file: \original\filesystem\etc\default.Fritz_Box_7170\avme\ar7.cfg When i edit that file with my settings, repack the firmware and upload the firmware it works. The problem is that this ar7.cfg file can only contain the setting from my internet connection. Not the VOIP-settings, the Wlan-settings and the content of; BINFILE:fx_cg and BINFILE:fx_conf and BINFILE:fx_lcr and BINFILE:telefon_misc and BINFILE:fonctrl Where in the unpacked firmware do i write the data of BINFILE:fx_cg and BINFILE:fx_conf and BINFILE:fx_lcr and BINFILE:telefon_misc and BINFILE:fonctrl ? Hope my question is clear. Thanks in advance.