I root my phone with help from this video clip in youtube (zedomax's Channel - YouTube)
but i have an issue right now and you may can help me...

I am trying to update the phone from android 2.3.3 to android 2.3.4 but it fails to do that with the normal way... (settings- about phone- software updates)
i download the update and i run it. when the phone restarts i get an attention icon (triangle) with an android figure... In order to get the phone working again i have to remove the battery...

Is this problem occurs because the phone is rooted?
what should i do?
Can anyone help me please??