Applicable Models

IMPORTANT: This file is only for use with the models identified. Not all models are sold in all countries.

This information is for the following models:

  • KDL-40EX640
  • KDL-46EX640
  • KDL-55EX640

About this download

Benefits and improvements

Sony has designed the BRAVIA® Televisions software update process to be customer friendly. This software update (version v1.245) provides improved performance and stability of the Internet features.'

System Requirements

Operating Systems

  • System Software

File Info

File Name

  • sony_tvupdate_2012_1245_ucf_auth.zip

File Version

  • v1.245

File Size

  • 106.15 MB

Release Date

  • 01-23-2013

Before You Start


Important Notes

  • WARNING!! After performing this update, it is not possible to return to or install a previous version of the system software. By downloading and installing this update, you acknowledge that you understand this update cannot be reversed.
  • WARNING!! Please follow the upgrade instructions carefully. Failure to follow the instructions may interrupt the upgrade process and may cause the TV to be unresponsive or require repair.
  • WARNING!! Do not power off the TV or disconnect it from the AC power source during the upgrade process. Loss of power during the installation of the firmware upgrade may cause the TV to be unresponsive or require repair.
  • All user settings are retained during the firmware update.
  • It is normal for the TV set to restart during the update process. The TV set may take longer than usual to restart as it is installing the new firmware.
  • To download the update, a USB storage device, such as a Sony® Micro Vault® device, or something similar, is required to perform the update. Sony is aware that not all USB storage devices are compatible with our TVs. If you are using a USB device for playback of photos, music, or videos on your TV, the same USB device type should work for the update. If the software update is not successful after following the instructions, you may need to format your device to the FAT32 file system, or use a different device. View formatting instructions and the list of recommended USB storage devices.
  • It is highly recommended that you print out these instructions for use as a reference during the installation process.

Download & Install


How to Check if You Need the Update

Please follow the steps below to check your television's software version to determine if it needs this software update:

  1. Power on the TV.
  2. On the TV remote control, press the "HOME" button to open the TV Home Menu.
  3. On the remote control, use the arrows Arrows to select the Settings icon Settings, and then press the EXECUTE Button EXECUTE Button.
  4. Use the arrows to highlight the Setup icon Product Support Icon, and then press the EXECUTE Button EXECUTE Button.
  5. Use the arrows to highlight "Product Support", and then press the EXECUTE Button EXECUTE Button.
  6. Use the arrows to highlight "Contact Sony", and then press the EXECUTE Button EXECUTE Button.
  7. Check the Software Version displayed on the Contact Sony screen. If your software version is v1.245 or higher, your TV does not need this update.

    Information Screen

Download and Transfer the Update File to Your USB Storage Device

  1. Download the sony_tvupdate_2012_1245_ucf_auth.zip file to a temporary or download directory (please note this directory for reference) on your computer.
  2. Go to the directory where the file was downloaded and verify that the size of the sony_tvupdate_2012_1245_ucf_auth.zip file is 111,302,414 bytes.
    1. Right-click the sony_tvupdate_2012_1245_ucf_auth.zip file, and click "Properties".
    2. On the "sony_tvupdate_2012_1245_ucf_auth.zip Properties" screen, verify that the "Size:" listed is "106 MB (111,302,414 bytes)".
      Note: The "Size on disk:" listed may be different. That is normal.
    3. If the file size is different than the "111,302,414 bytes", please download the sony_tvupdate_2012_1245_ucf_auth.zip file again.
  3. Extract the update file from the sony_tvupdate_2012_1245_ucf_auth.zip file.
    • For Microsoft® Windows Vista® or Windows® 7 operating system:
      1. Go to the directory where the file was downloaded and right-click the sony_tvupdate_2012_1245_ucf_auth.zip file, and then click "Extract All.
      2. At the "Extract Compressed (Zipped) Folders" window, click "Extract"
      3. A new folder will be created called "sony_dtv026000066006_00000301"
    • For Windows XP operating system:
      1. Go to the directory where the file was downloaded and right-click the sony_tvupdate_2012_1245_ucf_auth.zip file, and then click "Extract All.
      2. At the "Extraction Wizard" dialog box, click "Next".
      3. Click "Next".
      4. Click "Finish".
      5. A new folder will be created called "sony_dtv026000066006_00000301"
    • For Mac OS® X operating system:
      1. Go to the location where the file was downloaded and double-click the sony_tvupdate_2012_1245_ucf_auth.zip file.
      2. A new folder will be created called "sony_dtv026000066006_00000301"
  4. Connect a compatible USB storage device to your computer. View formatting instructions and the list of compatible USB storage devices.
  5. Transfer the update folder to the USB storage device:
    • For Windows operating system: Go to the directory where the folder was created, right-click the sony_dtv026000066006_00000301 folder and, from the menu, click "Send To...", and then click the drive (EX: Removable Disk E:) that represents your USB device. The update folder will be copied onto your USB device.
    • For Mac OS X operating system: Drag and drop the sony_dtv026000066006_00000301 folder to the root folder of the USB device.
    Note: The update will not be performed if the file is not copied to the root directory of the USB device or if the name of the file is modified.
  6. Remove the USB device from your computer.
  7. Please continue to the next section.

Update Verification (optional)

Updating the Software

The software update takes up to three minutes to complete. During the update process, the screen on your BRAVIA television will display progress information, or may be blank. This is normal. Please do not remove the USB storage device until the update is complete.

WARNING! Do not power off the TV or disconnect it from the AC power source during the upgrade process. Loss of power during the installation of the firmware upgrade may cause the TV to be unusable and require repair.

WARNING! Do not press any button, except as instructed, until the update is complete. Doing so may damage your TV and make it unusable and require service.

Make sure no other USB devices are connected to the TV before starting the firmware update.

  1. Power on the TV.
  2. Insert the USB storage device containing the update file into USB port located on the side panel of the TV.
    Note: The USB storage device can only be inserted into the USB port slot one way.
    TV USB Ports
  3. On the TV remote control, press the "HOME" button to open the TV Home Menu.
  4. On the remote control, use the arrows Arrows to select the Settings icon Settings, and then press the EXECUTE Button EXECUTE Button.
  5. Use the arrows to highlight the Setup icon Product Support Icon, and then press the EXECUTE Button EXECUTE Button.
  6. Use the arrows to highlight "Software Update", and then press the EXECUTE Button EXECUTE Button.
  7. Use the arrows to highlight "USB", and then press the EXECUTE Button EXECUTE Button.
  8. A series of different messages will appear on the TV set. Please follow the on screen instructions.
  9. During the update the PIC OFF/TIMER indicator slowly blinks amber and the STANDBY indicator is red. After several minutes, the "System update complete" message displays and the TV will automatically turn on to complete the update.
    TV Indicator Lights
  10. CAUTION: During the firmware installation process, do not remove the USB device, turn off the TV, or disconnect the TV from the power supply.

  11. After the firmware update is finished and the TV powers on, it is safe to remove the USB device from the TV.
  12. You may delete the update file from the USB device, or reformat the USB device.

    The update process is now complete.


  13. Note: If either message "An error occurred during the software update" or "Software cannot be updated using this USB device" is displayed on the TV screen, please proceed to the following procedure for a possible solution:
    1. Verify your USB device is in good working order and perform the "Download and Transfer" process again.
    2. Press the "POWER" button on the TV to power off the TV.
    3. Press the "POWER" button on the TV again to power on the TV.
    4. Perform the "Updating the Software" process again.
      Note: If the message "No newer version of the TV software was found" is displayed on the TV screen, your TV already has the newer firmware installed.

Please follow the steps below to verify that the software was successfully updated:

  1. Power on the TV.
  2. On the TV remote control, press the "HOME" button to open the TV Home Menu.
  3. On the remote control, use the arrows Arrows to select the Settings icon Settings, and then press the EXECUTE Button EXECUTE Button.
  4. Use the arrows to highlight the Setup icon Product Support Icon, and then press the EXECUTE Button EXECUTE Button.
  5. Use the arrows to highlight "Product Support", and then press the EXECUTE Button EXECUTE Button.
  6. Use the arrows to highlight "Contact Sony", and then press the EXECUTE Button EXECUTE Button.
  7. Check the Software Version displayed on the Contact Sony screen. If your software version is v1.245 or higher, your TV does not need this update.

    Information Screen