To update a befw11s4_v4 to firmware 1.52.06:
Get tftp.exe from:
Get the firmware from:
Rename the firmware filename to "code.bin"
A note on tftp & the befw11s4_v4: Do not try to start the tftp pgm at the same time as the befw11s4_v4 is powered up (as with a wrt54g). It seems the befw11s4_v4 will (only) respond to a tftp firmware download anytime _after_ it has been powered up. Therefore I suggest disconnecting the befw11s4_v4 from all lan & wan connections, other than the computer doing the firmware update.
Power up the befw11s4_v4 & check you can "talk" to it. Reset the befw11s4_v4 to factory defaults via the HTML interface. You should now be connected to the befw11s4_v4 at 192.168.1.1, login "admin" & password "admin". The router is now ready to accept the tftp firmware update.
From your computer dbl-click or run tftp.exe.
Enter the following:
Server: 192.168.1.1 Password: admin File: [enter the location of the "code.bin" file you just renamed]
It didn't take long to flash the upgrade, 15 sec. as I remember. The tftp pgm will respond with a upgrade complete.
Wait a minute or so then try going to 192.168.1.1. It should show "Firmware Version: 1.52.06" :)
I did a hard reset after flashing the new firmware (hold the reset button depressed for 30 seconds).
I have 15+ hours on the 1.52.06 code & it is running OK.
NOTE: This code has no "release notes"! There is _NO_ support for this firmware. I have attempted to describe how I got my befw11s4_v4 to run 1.52.06 firmware. Your results may be different.
It may fix some problems that I & others were having with the 1.52.02 firmware. My befw11s4_v4, running 1.52.02, would lock up or "freeze" at anywhere from 5 minutes to 12 hours from power on. It is not doing that now.