I think that your battery is out of power. Try to charge your battery some other device, or got another piece of battery to flash.

Same problem here. Nokia Software updater stalled with 1 second remaining for over an hour. I unplugged the cable and the Software Updater crashed. I reconnected and started the updater, but there was no option to recover. Now the Nokia logo appears with no back lighting and it vibrates when pressing U while plugging in the cable, but there is no USB icon in the corner and it chain cycles through the Nokia logo every 45 seconds or so, vibrating each time. Flasher just waits no matter what USB port combinations I try..

I like I have a brick

I've got exactly the same problem here and I am now quite stuck

Looping like that is usually a sign of a low battery. Try leaving it to charge or charging the battery externally.

For those who had the update stall out at 1sec forever and then got the faint nokia logo in an infinite loop: I was in the same situation this morning, then replaced the battery with a fully charged one and viola! I was able to hold down "u", get the usb logo, and use the maemo flasher to reflash the system (with PR1.1-USA) as detailed in various other threads. 5mins later my phone was up and running. I would highly recommend a 2nd battery and battery charger. They are fairly cheap (<$40) online. Not only did it rescue me in this situation, but with my heavy N900 usage, it's helpful to be able to do a mid-afternoon battery swap and immediately be back to full charge.

I suspect the root issue was that while waiting hours for the stalled update, it drained the battery far enough that it was no longer possible to initiate a flash. It appears that those who stalled at 1sec and then ignored the instructions to not remove the phone or power it down during the update fared better because the phone was able to restart while still having enough juice to complete a flash. YMMV.

exact same thing happened to me. it got stuck at 1 second left and then crashed and it doesn't turn on anymore. i can see the nokia logo without the backlight like the others had mentioned.

Have you all tried reflashing? As I suggested in page 1?

here is what i did to charge my battery since the power adaptor was not doing anything, charged it for about an hour, put the battery back in hold "U" and now you will see the USB logo and then proceed flashing the phone use the Flasher

can you give some more details about which wires to connect where?

I have the same problem but i have two n900 i replaced the battery for other and cant flash it does anyone know why? im sad and the battery was fully charged

I install ubuntu with windows i installed because the people say me that linux are better to flash these phone and now i put the comand and the terminal say the file does no exist or wrong directorie whats wrong? im bad or can anyone send me a complete tutorial on how to flash it with ubuntu