Today i flashed my n900 to new firmware pr1.2 There are lot’s of improvement over it’s previous versions. I am going to show you a step forward way to flash your n900 to pr1.2 from your windows pc.
1.Go here: http://tablets-dev.nokia.com/nokia_N900.php
2.Input your IMEI no. that you can get from settings > about product.
3.Download the PR 1.2 version 10.2010.19-1 from the download list.
http://tablets-dev.nokia.com/nokia_N900.php?f=RX-51_2009SE_10.2010.19-1_PR_COMBINED_MR0_ARM.bin
4.Download flasher from here: http://tablets-dev.nokia.com/maemo-dev-env-downloads.php?f=maemo_flasher-3.5_2.5.2.2.exe
5. Install flasher in your pc.
6.Copy the downloaded pr1.2 image file to the flasher installed location. that would probably be at C:\Program Files\maemo\flasher-3.5 folder.
7.Open command prompt.
8.Change the directory to the flasher using the command cd C:\Program Files\maemo\flasher-3.5
9.Switch off your device and then press and hold the u key on the n900 keyboard and connect your usb cable to the pc and your n900. Your device should be now set to the flashing mode. A usb icon should appear on the upper right hand corner.
10. Run following command on the command prompt.
flasher-3.5.exe -F RX-51_2009SE_10.2010.19-1_PR_COMBINED_MR0_ARM.bin -f -R
This should execute a series of command and reboot your n900 to latest pr1.2 maemo successfully.
I SEE GOOD BATTERY IMPROVEMENTs IN THIS VERSION