How to force update Nokia Lumia 800 to latest firmware 12070

As announced, latest firmware update for Nokia Lumia 800 is now available for download in India and Singapore. If  you don’t live in these regions, don’t worry their is an option to force the update to your Lumia 800. I’m not able to confirm this trick, but a few have reported that it works well.

Updating  Instructions:

You will need these software:

The Procedure:
  1. Make sure Zune is installed and working correctly with your phone. You must have it set so that it’s the primary sync relationship, if the sync relationship is set to guest mode the update will not work.
  2. Double click on the WP7 update tool, inside you’ll find two versions, x64 is for 64bit versions of windows, X86 is for 32bit versions of windows. To check which version you have click your windows start button, right click the  ”computer” button, select “properties” and you’ll find the information in there.  Now you know your version open the correct folder and you’ll find a file called “Setup-UpdateWP-Xxx.exe”, run this file and it will install itself. You’ll see it start to install then disappear, that is normal.
  3. Extract the contents of the file to an empty folder on your PC, you’ll see two folders and a batch file “Wp7 Update Cab Sender”.
  4. Copy the software update .cab file you downloaded to the same folder as the batch file, this is important. Do not extract the contents of the .cab file.
  5. Connect your phone to the PC, allow it to sync with Zune as normal, then close Zune leaving the phone connected.
  6. Run the “Wp7 Update Cab Sender” batch file and you’ll see a DOS style text window asking you to select a letter. To start the procedure press the letter “S”. Do not close the text window, as it shows you the progress of the procedure or any warnings. Do not disconnect your phone until it is up and running again.
  7. Sit back and watch as the progress is updated in that window, first the phone will reboot then it will display an updating screen. After a while a white bar will start to move across the screen showing the progress, when it’s finished the phone will reboot. From sending the cab file to the phone to the procedure completing it takes around 10 minutes. When the phone reboots it will tell you that the update completed successfully, now enjoy your freshly updated phone!

You should find that your phone updated without any loss of data at all and that it is still the correct regional version. I do not believe that this procedure voids the warranty, but I cannot guarantee that. No carrier branded is added or removed by using this update

Read More  over :- XDA Forums

Changelog for Nokia Lumia 800  (1600.2487.8107.12070):

The new Lumia 800 update brings the following enhancements:

  • Enhanced battery standby and talk time performance
  • Battery capacity icon instead of question mark on top right of screen
  • Improved bass in audio performance
  • Soft-key illumination at all brightness levels
  • Fixes for device performance issues including self-reboots, freezes and call-ending

Read More Here : –

Disclaimer: Following this procedure is entirely at your own risk, SymbianTweet will not be responsible for any damage.

[Via, Source]

  1. Ozan Sambur

    Like it! It did work very well. I do now recognized that my battery improved dramatically. It is now discharging round about 70 mAh, before the update it was by 135 mAh. Nokia also fixed the backlight bug of the hardware button’s. The buttons are now always turned on. They did also improved the already amazing speed of the UI. It feel now much better fluent. Well done Nokia! 😉

  2. Techin5

    Works perfectly, thanks for the guide!

  3. AmoX

    I colud not choose a letter, it only downloaded a Log, so I had to edit the *.bat file (3rd line…instead of “GOTO Menu”; “GOTO Sandcab”), save, execute and worked!!!! Thx alot 🙂

  4. segana

    This worked a treat on my Orange UK Lumia 800. Only just applied the update, so don’t know what effect it’ll have on my battery, however my recent bug-bear of late has been fixed as I can now see my soft-keys again!!!! YAY!!!! 🙂

  5. Torstein Brauter

    Workes like a charm. Thanks for the howto. 

  6. Mark Walton

    Excellent, very simply procedure and works perfectly. Just updated Orange/Tmobile variant and battery idle is much much lower.

  7. Thmas Bergant

    Worked for me without any problems… 

  8. Vikram Murkute

    didnt work for me, after the back up while the updating the installation post restart, an error occurred saying: No application files found. Tried it twice. To no avail..

  9. Not Working

    Got an error message. Couldn’t complete the update because of some missing packets on my phone. Installing update IU error

  10. Mario

    ‘CHOICE’ is not recognized as an internal or external command,

    operable program or batch file.

    This is what i get after pressing “S” ???