Thanks dude but I found a simple way. For those who encountered the same problem please follow the step as below :
Windows XP
Close iTunes and disconnect the iPhone, iPad, or iPod touch.
Choose Start > Control Panel.
Inside the Control Panel, open Administrative Tools.
Open Services.
Select Apple Mobile Device and click Stop the service as shown below:

After the service has stopped, click Start the service.
After the Apple Mobile Device service has started again, open iTunes and connect the device.


Windows Vista or Windows 7
Close iTunes and disconnect the iPhone, iPad, or iPod touch.
Click the Windows Start button .
In the Start Search field type Services.
In the Programs section of the search results, Click "Services".
Select Apple Mobile Device and click Stop the service as shown below:

After the service has stopped, click Start the service.
After the Apple Mobile Device service has started again, open iTunes and connect the device.

wow, nice info!thanks for sharing mate....

No worries, sharing is caring heheh

ok one noob question here, is it ok to update to the latest version of itune?..err..i guess it's 10.4 now..i am currently with a jailbroken iOS 4.3.3 and my itune version is 10.3..

its ok mate.nothing to worry about the itunes update.

just download the latest itunes version..
but bare in mind not to hit the 'update' button of firmware in itunes coz u're using a jb set..

Nothing to worry about

I have updated mine also no problem

Hi guys i just bought my iphone 4 and how can I use existing apple ID in the app store without it asking me for credit card which I don't have... THANKS LOTS

You can just skip that steps,if not mistaken ..

yup.. just skip it

For existing apple ID user, you may select 'none' in credit card section so in future it won't ask you for credit card number.

For newly register apple ID user who don't have/don't wish to insert credit card number during registration, simply select any free apps in AppStore and install it

have a look on this mate..
a guide from apple

Erm... i don't have the option "none" for the existing 1... but if i create a new apple Id in my iphone the "none" appeared... what kind of bug is this? using my existing still don't give me the "none" option

I wanna use my existing 1... don't want to complicate much by using another email...

actually i tried that before i post this.. it works but i want it to work with my main existing 1 no solution on the apple web watsoever

This post has been edited by projectnew: Aug 13 2011, 03:31 PM

ur previous registered apple id.. Got attach credit card another..?

just try to buy a free app. u'll reach a screen where it asks for ur payment details. but this time u'll see the 'none' option, so pick that one

im not sure if this works on itunes iOS. it should work on itunes desktop

i try this before and it works...TS should try it..

No boss, I never had a credit card so why would I want to put any credit card number =/

I'll try it...

Okies..

that being said, go get a credit/debit card. IMHO the good stuff are those 99c ones

last time still need to use the US a/c, now no need?

you can also enter ur debit card number which is accepted by Apple