I'm using telnet
mybook firmware is 2.0.1+

TIA

I would do the ssh version prior to doing the telnet.
http://"ip-my WD world"/auth/firmware_upgrade.pl?fwserver=www.geekoh.com/mybook/ssh1

But your issue is that your mybook is not netwoked properly.

Goto the web interface's general setup tab
click configure the network settings
go through the wizzard as manual.
Hard code your network address and mask (ex 192.168.1.36/24) which means its subnet is 255.255.255.0 (note if you use my example your ip will be 192.168.1.36, please keep it with the similar ip convention as your router and local network)
Proceed to Gateway Page
From here set your gateway address (ie addres of your router) (eg, 192.168.1.1)
Set your dns servers (either use your dns server ip that you like or isp requests) (I prefer to use the dns alias my router has built in [many routers do]) To do the dns of your router, put your router's ip (eg, 192.168.1.1)

Make sure a NTP server is set so it can keep track of proper time, it is a dumb system without much to keep a proper tick.
(north-america.pool.ntp.org)

And click apply/finish.

It will say you need to reboot your computer, however you should not have to.

Just browse to the new ip in your browser, it may take a min or so to come back up (if your mybook does not restart, manually do it [led button, dont pull the power])

Now it should be able to do the find new firmware with the geekoh server.

Your mybook needs a valid inet connection setup to the update script to enable ssh or telnet.

If you still have issues after setting up networking, pm me and post in this thread, and I will explain how to make your local computer a server that can provide the firmware image locally] I also need to know what OS you use (ie. Linux [Ubuntu, Fedora, Mandriva,etc], Windows [XP,Vista,Me, 98, 3.x], Mac OSX) so I can give you customized instructions.

It essentially is an http server with a few files on it for the basics… The geekoh server does some checking using php but it is not required to do so. I just have it do the checks to provide directions if they try to visit it outside of the firmware upgrade interface.

http://"ip-my WD world"/auth/firmware_upgrade.pl?fwserver=www.geekoh.com/mybook/telnet

WD web Interface tell : "There is no new firmware available"

with "cmd" in windows. I do: telnet "ip- my WD world". I try too with putty. but It's not good.

I think have not been enable. Have you a solution?

I may update the script to just do the mod instead of download a temp telnetd.