I am having problem formating my N900.

I had an update terminated when my N900 was on. I terminated the update by switching off the N900.

On restarting the N900, it keeps telling me "installing software update please do not interrupt... 5%"

I leave the N900 to complete the installation, however it never gets completed.

Now i want to format and revert to factory settings and it wont work with the u button pressed down. It still shows "installing software update please do not interrupt... 5%".

And with that, my laptop cannot recognize the usb port i have the N900 connected to.

Please u have got any solution to this problem kindly let me know how i can get over this problem.