I also would like to know what the latest Nec 3520 Official firmware is.
rather than me look about all over the place on the forum as im busy at this time can i get a little help.
The latest non-rebadged firmware from NEC is still 1.04, but you can flash to 3520_104_8th.rar (09/02/05) that may be newer then the firmware that came from stock, you can use necflash and necdump to view what firmware you are actually using. A new official NEC firmware is announced for May...
its ok i just used DEE`s hacked firmware.