Install Gargyole on a fonera (fon2100)

fon 2100
The La Fonera is a wireless router that runs a light version of Openwrt, and to make the most of it i am going to install Gargoyle firmware.

First off, do NOT connect the device to internet, since it will try to update its firmware and you can only hack version up to 0.7.1 r1.

Give it some juice by hooking up it to the 5v power adapter, and connect to the ”MyPlace” network, the key is the serial on the bottom sticker of the device.

If you dont find a MyPlace or it wont accept your key, you need to reset it to the original firmware by holding the reset button on the bottom 15-20 secs (not longer)

Open and check your version, it needs to be 0.7.1 r1 or below, if not; you would need to downgrade it.

Click the advanced link and login with admin / admin.

Download (right click and save as) sshenable.html to your computer, open it and press submit.

open a terminal (spotlight: terminal) and ssh to the device.

ssh -l root

password is admin.

rename sshd so it starts at boot.
mv /etc/init.d/dropbear /etc/init.d/S50dropbear

Download out.hex and openwrt-ar531x-2.4-vmlinux-CAMICIA.lzma to a folder (fonera).
Start another terminal and change directory to the folder
cd fonera

transfer out.hex and openwrt-ar531x-2.4-vmlinux-CAMICIA.lzma files to the /tmp on the device.

scp openwrt-ar531x-2.4-vmlinux-CAMICIA.lzma root@
scp out.hex root@

Now we patch the kernel

mtd -e vmlinux.bin.l7 write openwrt-ar531x-2.4-vmlinux-CAMICIA.lzma vmlinux.bin.l7

…and reboot


Once available, reconnect to MyPlace.

ssh in again:

ssh -l root

…and patch redboot conf.

mtd -e "RedBoot config" write out.hex "RedBoot config"

…and reboot!


Download fonflash from and the gargoyle version you would like to use, i have 1.3 and uptime of (may 12 2011) 37 days without a issue.
Unplug the power and make sure you have the ethernet cable hooked up.
Set firmware type to gargyole, and select both your downloaded Gargyole .squashfs and .lzma files.

Hit start in fonflash and wait a few seconds and then power up your fon router by plugging it in.
It will now flash your fon to gargyole and can take up to 30 mins, fonflash will tell you when it’s done.

Please leave a comment if you don’t get it to work!





6 svar till ”Install Gargyole on a fonera (fon2100)”

  1. Profilbild för zenny

    Thanks for the step-by-step guide. I found it as the best guide for fon hack! 🙂 But the last part is a bit confusing.

    1) I meant what is ’fonflash’? There is no such file as fonflash (, but of course two firmwares with lzma and and squashfs extensions ( and There I also did see a combined img ( Which one do you meant?

    2) ”Unplug the power and make sure you have the ethernet cable hooked up.
    Set firmware type to gargyole, and select both your downloaded Gargyole .squashfs and .lzma files.”

    Once the power is unplugged from fon, how can anything be done further? And where to hook the ethernet cable, to the computer or to the wlan?

    Your clarifications would be appreciated!

  2. Profilbild för zenny

    Okay, now I found the fonflash for linux 64 bit at and for 32 bit at

    Actually, first reboot hangs the terminal for a while. Pull the power plug out and then connect the fon with computer with a normal RJ45 cable and start the fonflash-gui utility by executing ./fon-flash-gui and select eth0 as the port and choose the rootfs and linux img file and finally flash the router. Takes a long time.

    Thanks again!

  3. Profilbild för Lunxer

    Did you get it to work?

    Was quite a while since i wrote this, so some things could have changed since i did this.
    Please comment again if you need some help and i’ll do my best to help you out 🙂

  4. Profilbild för Natim

    I am just doing it right now and all steps are perfectly working 🙂

    Also after the reboot, the FON ip seems to be and I can ping it but it is all about it.

    I cannot access nor the webpage nor ssh into it.
    I flashed it using:


    I reset it with the read button and I was able to run again ./fon-flash. Now trying version:


    If it stills doesn’t work I will try the 1.3 version as proposed here.

    1. Profilbild för Natim

      Oh I might have chosen the wrong architecture.
      Trying with Atheros 231X/5312 instead

  5. Profilbild för lausse

    Thanx for instructions. I didn’t get it to work. Everything worked fine til last reboot after patched redboot. Agree with Zenny that instructions where a bit blurry after that, but even Zennys clarifications weren’t enough for me. Didnt know exactly what two files two install – and tried different versions – but same result. FonFlash app fighter just accidentally quit or didn’t find the router… (no packet and no ARP) Im on 10.10.4 and Fon2100 obviously. Would be nice to recycle this old piece of electronic instead of buy instead of buying new repeater.

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