When my dad updated the router. and now i cant use wifi on my ipod touch all it says is unable to join network can someone please help

Perhaps this will help: http://kb.zyxel.com/KB/system!index.action

Depending on the version of your router (you can determine the version from the Trendnet support web site), there may be a firmware update for your router that will resolve the issue that prevents your iPod Touch from connecting to it.
There has also been discussions that simply reseting the router by disconnecting the power cord for a minute or so can allow an iPod Touch to successfully associate with a flakey router.

First you'll need to turn on your Wi-Fi.

1. Choose (Settings) then (WiFi) then (turn WiFi on)
2. Set iPod touch to ask if you want to join a new network: Choose (WiFi) and turn (Ask to Join Networks) ON or OFF.

Then you'll need to join a WiFi network (your D-Link for instance)

1. Choose (Settings) then (WiFi) then wait until your D-Link shows up in the list of networks.
2. Select your network and if you have a password for your router make sure you type it. (networks that require a password have a lock icon next to it) then tap (join)

Once you join a WiFi network manually, iPod touch will automatically connect to it whenever the network is in range. If more than one previously used network is in range, iPod touch joins the one last used.

When iPod touch is connected to a WiFi network, the WiFi icon in the status bar at the top of the screen shows the connection strength. The more bars you see, the stronger the connection.

Good Luck

Your WiFi router may be configured to not allow your iPod Touch to connect to it. This is done by specifying a list of "MAC addresses" that can connect to the router.

You must have your wireless profile's name and passkey.  Try resetting your router, then make sure you create a new profile for your desktop and take note of the details (ie name, WEP/WPA Key)  Should work just fine if you follow the steps.

did you setup a wireless network ? if you didnt go to control panal and then wireless network setup icon and follow instructions (select automatically provide network key option) then follow instructions and finish. once you did that, search through wifi on youf phone it should find your WNetwork and then connect and enjoy. if you want to use internet and have an ADSL modem, make sure that the modem is connected to the internet RJ45 plug on your router. and from router to PC.

good luck, i hope this helps

how do i connect my ipod touch it says unable to join network

i had the same problem too with my'n. My issue was on of my setting's was set to block that wi-fi connection. Try switching your setting for finding internet connection from automatic to manual. that should do the trick!

ok do this if it is already showing your router up on your portable device but it has that security lock and you are unable to join or need a password which u dont know lol go to that network and on the top push forget this network. than go back and click on for other location. than for the name put in your router name usually 5 characters long make sure u use capitalization cuz its case sensitive. than select what kind of key u have it should say right on the side of your wireless router. than type the key in usually a wep key and u should be set to join it if it doesnt auto matically do soo