AVM FRITZ!Box Fon WLAN 7170

• As the device seems not to be fully supported by OpenWrt, you may want to take a look at the Freetz project, which adds extended features to the original AVM firmware.
• There is a free DSP Compiler available.
• A good reference for more information is also the inofficial AVM Wiki (german), specifically Fritz!Box 7170.

As of time of 22nd Nov 2010 developers say that:

• Wireless stability is supposedly almost done
• No dsl rewrite is needed (afaik)
• Usb client support is trivial to add
• Usb host support is in low demand

As of 20/12/2015 there doesn't seem to be any kind of support for this device.
There's no sign of life in the OpenWrt forum, nor any changeset specifically related to this device. --- tmomas 2015/12/20 00:41
Some old builds that work for me can be found here: http://schwart6.home.xs4all.nl/fritzbox_7170/. -- jschwart 2016/12/17
Latest work version is Backfire 10.3.1.

See also:

• http://www.linux-mips.org/wiki/AR7

1. → downloads
2. → Install OpenWrt

Only the squashfs version works. The jffs2 image won't boot.

Stock firmware source: AVM's sourcecode

The default flash layout of the AVM firmware is Hidden Root

Please check out the article flash.layout. It contains an example and a couple of explanations.

mtd0    0x90000000,0x90000000
mtd1    0x90010000,0x90780000
mtd2    0x90000000,0x90010000
mtd3    0x90780000,0x907C0000
mtd4    0x907C0000,0x90800000

Before changing anything you should backup flash content. mtd1-4 are the single partitions.

1. Configure your PC to the static IP-Address 192.168.178.5/24 and set the default route to 192.168.178.254
2. Remove the power plug of the router.
3. Open a terminal
4. type:

   $ ftp 192.168.178.1

5. Provide credentials, user: adam2, password: adam2

bin
debug
quote MEDIA FLSH
get mtd1
get mtd2
get mtd3
get mtd4
quit

Now you will find 4 files (mtd1-4) with the content of the flash as backup.

The fritz-flash script [DEAD LINK --- tmomas 2015/12/20 00:46] is one simple way to install Openwrt. This script is most likely similar (if not the same) to the one behind the dead link. The fritz-flash script has been further developed as part of the freetz project, but the latest version is untested with OpenWrt.

The steps to install OpenWrt are:

1. Configure your PC to the static IP-Address 192.168.178.5/24 and set the default route to 192.168.178.254
2. Remove the power plug of the router.
3. Open a terminal
4. with fritz-flash type:

   ./fritz-flash -f openwrt-EVA-2.6-squashfs.bin

5. without fritz-flash type:

   ftp 192.168.178.1
   bin
   passive
   quote MEDIA FLSH
   put openwrt-EVA-2.6-squashfs.bin mtd1
   quote REBOOT
   exit

6. Reinsert the power plug.

→ generic.sysupgrade

→ Basic configuration After flashing, proceed with this.
Set up your Internet connection, configure wireless, configure USB port, etc.

→ failsafe_and_factory_reset

→ hardware.button on howto use and configure the hardware button(s).

• Note: This will void your warranty
• To remove the cover, use a flat screwdriver, to remove the clasps from the notches on the bottom. No screws present to unscrew.

Main PCB

→ port.serial general information about the serial port, serial port cable, etc.

Do not connect USB UART (TTL) adapter like shown here (it will get broken) → see marked 4 dots in JTAG image.

How to connect to the Serial Port of this specific device:

Note: This requires an UART (TTL) cable.

7170                PC
GND  O-----------O  GND 
TxD  O-----\/----O  TxD
RxD  O-----/\----O  RxD
3V3  []         []  3V3

→ port.jtag general information about the JTAG port, JTAG cable, etc.

How to connect to the JTAG Port of this specific device:

 TRST  1   2 GND
 TDI    3   4 GND
 cTDO   5   6 GND
 TMS    7   8 GND
 TCK    9  10 GND
 RST   11  12 KEY
 DINT  13  14 3V3
  ?    15  16 cTRST
  ?    17  18 GND
 3V3   19  20 ?
  ?    21  22 GND
  ?    23  24 GND
  ?    25  26 GND
  ?    27  28 ?
  

Note: The c stands for coprocessor and is needed if a second device is in the JTAC chain, like is the case for the FB7170. So both the TRST and cTRST need to be connected to 3.3 volt via a 100 Ohm resistor.

The JTAG software that supports multiple JTAG devices in a chain can be found here: http://freetzlinux.svn.sourceforge.net/viewvc/freetzlinux/trunk/wrtjp/wrtjp.5.2/

For the 2000 2397 (Infineon) I only got the following output.

/fritzbox/jtag/wrtjp.5.2# ./wrt54g -probeonly

==================================================
WRT54G/GS/AVM/Speedport EJTAG Debrick Utility v5.2
==================================================

***-----------------------------------------------------------------***

Beginning detect scan leangth...
Switch on power!...
Chain lenght: 14 IR-Chain: 00000000000011 (00000003)
Probing bus ...
Beginning scan chain auto-detection
Device number: '1' Chip ID: 00000000111100000100000000000011 (00F04003)
 *** Unknown or NO Chip ID Detected ***
Done

Processing is stopped now, you must specify new commandline options now:
/skipdetect and /dv:XX with the device number of the CPU found.
/fritzbox/jtag/wrtjp.5.2#

→ generic.debrick