Download of FonFlash 1.0 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. This free software for Mac OS X is an intellectual property of Eric Bishop. The most popular version of the software is 1.0. Fon-flash-osx.tar.gz is the common file name to indicate this application's installer. This program's bundle is identified as com.gargoyle-router.gargoyleflash. The application belongs to System Tools.
From the developer:
Fon Flash is a program based on AP51 flash, for flashing La Fonera and Atheros chipset compatible devices. The application has been tested, and works with the original 2100/2200 devices, as well as the newer Fon+ and Fon2.0 models.
A great feature of this app over AP51 flash, is that it can flash several different types of firmware.
You may want to check out more Mac applications, such as Portable Nvu, SpaceReporter or GPUInfoMenu, which might be similar to FonFlash.