Please help,

SOmehow I bricked my N900. SO I tried to flash it and I followed the wiki step by step. Got all the way to the end and it quickly does something but nothing happens. Please help.

Basically I installed the wifi mobilehotspot app and then removed it. Also removed the custom kernel it creates. Once I did that I powered down the device and then the device would not start. It says Nokia screen and 4 dots and then it cuts off.

I then downloaded the firmware and flasher 3.5. Followed all the steps in the wiki. Everything happened as the wiki said but the ending is not complete for me. Wiki says after connecting USB to Nokia while pressing "U" then start the flasher. It does all that for me but nothing happens, no flickering on the N900 or anything. Wiki says it'll take 4-5 minutes. Is there any picture that shows what will take 4-5 minutes or are you suppose to just keep the N900 connected for 4-5 mins using a timer and then unplug.

Please help, thanks in advance.

Also when connected to the AC/DC power plug it constantly reboots from a completely black screen to the greyed screen with Nokia letters.