HOTSPOT SYSTEM FIRMWARE
-----------------

  This firmware is based on the final release of the whiterussian branch / CoovaAP.

   There's two types of files, the "trx" files and the "bin"
   files; the bin files simply repackage the trx in the vendor's
   default firmware format and are only used when the trx file
   can't be used directly.

   hotspotsystem_image.trx
     This is a generic firmware for any broadcom cpu supported
     by the whiterussian release. This is the firmware in raw
     format, exactly as it will be written to the flash.

     Not all devices will let you use this raw format, some
     will require extra information provided by the bin files
     below.

     This file can be used for the following:
       - Upgrading any existing OpenWrt install (mtd util)
       - Asus WL500g
       - Asus WL500gx
       - Buffalo Airstation WBR2-G54S
       - ...

     Check your router here: http://oldwiki.openwrt.org/CompleteTableOfHardware.html (Status = Supported)

   hotspotsystem_image-wrt54g.bin
   hotspotsystem_image-wrt54gs.bin
   hotspotsystem_image-wrt54gsv4.bin
   hotspotsystem_image-wrtsl54gs.bin
     This is the exact same as the trx file above, with one
     exception -- a small header has been added to the start
     of the file, marking it as a valid upgrade for Linksys
     models. Supported models:
      hotspotsystem_image-wrt54g.bin
       - WRT54G (v1.0, v1.1, v2.0, v2.2, v3.0, v4.0)
       - WRT54GL
      hotspotsystem_image-wrt54gs.bin
       - WRT54GS (v1.0, v1.1, v2.0, v3.0)
      hotspotsystem_image-wrt54gsv4.bin
       - WRT54GS (v4.0)
      hotspotsystem_image-wrtsl54gs.bin
       - Linksys WRTSL54GS 

 Upgrading from a previous OpenWrt install
  Backup /etc changes and package list:
    Before you upgrade, please consider making a backup of your /etc 
    directory and then write down the list of packages installed.

    As of RC4, reflashing with OpenWrt -WILL RESET THE FILESYSTEM-.
    All the changes you've made to the configuration files and all
    the packages you've been installed will be purged and replaced
    with the new firmware.

    NVRAM is NOT modified by a reflash. Any NVRAM values will remain
    intact after reflashing.
  
  Backing up the old OpenWrt as a firmware image:
    To backup an existing openwrt install, use the command:

      dd if=/dev/mtdblock/1 of=/tmp/firmware.trx

    This will produce a pseudo-trx file containing the firmware (trx)
    followed by a dump of the JFFS2 filesystem -- basically everything
    except the bootloader and NVRAM. Copy this to a safe place and
    only restore it to a device with the same size flash chip.

  Upgrading / Restoring:
    To reflash from within openwrt you will need to use a trx file:

      mtd -r write firmware.trx linux

    The "-r" will force an automatic reboot after the reflashing. You
    can also add a "-e linux" to erase the previous firmware, but this
    is rarely needed.