Hi! sorry for the bump, but great job on getting this working!!
A few questions though:
1) Does the Wireless work correctly?
2) Can it go into bridged mode?
3) Did you have to change the header on your firmware to use it?
The reason I ask #3 is because i tried this on my device, except it was a v5000, and it bricked it. Unfortunatly there is basically no documentation on this device, so i had quite a time figuring out how to un brick it...
Once i got it unbricked, i found out that the Boot loader (U-boot) checks the header of the firmware for Belkin's
"Magic Number" So far, i have seen no way to successfully trick the bootloader into thinking that the openwrt firmware is legit. All i can do is edit the header of a legit belkin firmware to reflash the router to its standard settings. Is there anything i can do to get OpenWRT on here?
If anyone can help that would be great. I'll post the things i learned to get it unbricked just in case someone else had the same problems i did.
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I read, on the few sites that had specs for this router, that the F5D9230-4 had no serial port available for launching the console. Lucky for me, there is infact a serial port on this router. Luckier still, it has the same pinout as the AR-525W, which is well documented. I also had the benefit of unbricking the AR525 at the same time 
Some things you need to know:
The Belkin F5D9230-4 (v5000) uses U-Boot bootloader instead of Redboot. I found U-boot far more confusing.
The correct settings for accessing the U-Boot through Putty are 57600, 8, N, 1, No Flow
When accessing U-boot, there is no break key (ctrl-c) like Redboot, but rather you must enter a menu choice within ~1 second of plugging in the router. You have to be very quick...
I think you can use pretty much any usb to serial adapter to hook this up to your computer, BUT you MUST have a Level Shifter. It wont work very well otherwise. you can do it without one, but when i did this, it ended up burning out my usb-serial adapter. Get a Level Shifter.
This router is reversed from most that ive seen in terms of tftp. once you log into u-boot, you have access to a tftp client, but you need to have a tftp server on your computer and the firmware file you wish to flash. you then can set the ip settings of the router in the tftp client (one of the menu choices- #2 i think) and access your computer.
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if anyone needs help unbricking their router, i will try to help you, but this was my first real venture into the unbricking world.
(Last edited by darthcircuit on 23 Mar 2010, 20:39)
