Step 1: On your Xbox One console

You'll first need to know which OS version you're currently running in order to download the correct system update.

To find your Xbox One consoles OS version:

• Press the Xbox button to return to Home.
  
• Press the Menu button and select Settings (or select Settings on the Home screen).
  
• Select System.
  
• Select Console info.
  
• Your OS version is the third row down. Please document this information so that you can select the correct download in the next step.

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Step 2: On your computer

• Plug your USB flash drive into a USB port on your computer.
  
• Format the USB as NTFS (USB must have at least 2 GB of space).
  
• You'll need to select the correct OSUDT file based on your current OS Version to be able to install properly. Select the OSUDT file based on your current OS Version that you documented in Step 1 to begin the download.

Console OS Version |File Version
6.2.9781.0(xb_rel_flash1307.130829-1800) | [ Register or Signin to view external links. ]

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6.2.10210.0(xb_rel_launch 131118-1159) |
6.2.10217.0 (xb_rel_launch.131205-2200) | [ Register or Signin to view external links. ]
6.2.10542 (xb_rel_1402.140213-0115) fre |

• Click Save to save the console update .zip file to your computer.
  
• Unzip the file. If youre using Windows XP, Windows Vista, Windows 7 or Windows 8, double-click the .zip file to unzip it.
  
• Copy the contents of the .zip file to the root directory of your flash drive.
  
• Unplug the USB flash drive from your computer.

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Step 3: On your Xbox One console

• Unplug the network cable if youre using a wired network connection.
  
• Power off your console, and then unplug the power cord to ensure that the console is completely powered off.
  
• Wait 30 seconds.
  
• Plug the power cord back in.
  
• Plug the flash drive into a USB port on your Xbox One console.
  
• Press and hold the BIND and EJECT buttons on the console, and then press the Xbox button on the console.
  
• Continue holding the BIND and EJECT buttons for 10-15 seconds.
  
• Listen for two power-up tones a couple of seconds apart.

Note If you don't hear two power-up tones after 10 seconds, it means this failed. Likewise, if you hear any power-down chirps, that also means this failed.

• You can release the BIND and EJECT buttons after the second power-up tone.
  
• When the console restarts, remove the USB drive.
  
• Once the console restarts, the update is complete and you should be returned to your experience.
  
• Note The console restart may take several minutes. If you were using a wired connection please plug your network cable back in to the console. If you have never connected your console to the internet, you will need to connect at least once during your system set-up process.

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About the buttons and beeps:

The BIND and EJECT button combination forces the console to look for the USB drive update, as the console will not look for a USB drive unless it needs it. This helps to decrease console start times for all startups when this step is not needed.

The first power-up tone will occur approximately 10 seconds after powering up. This indicates that a USB update has been detected. The second power-up tone indicates that the update file has been copied and mounted. This is important, as it confirms you have a compatible Xbox One system update based on your current build. This informs the system which build is currently installed on the console, and whether the update is compatible with that build.

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How to Format a Thumb drive to NTFS on Windows

• Plug at least 2 GB thumb stick into any PC that is running a version of Windows.
  
• Open File Explorer
  
• Right click the Removable Disc from the left side navigation.
  
• From the pop up menu select Format.
  
• On the Format Removable Disc pop-up menu they should see a field called File System
  
• If File System is not currently set for NTFS, select the drop-down menu and select NTFS
  
• Click Start to begin the formatting process.

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I take no credit for this guide I'm just posting it here for people who didn't know you could do this or don't have internet access. The official guide is here [ Register or Signin to view external links. ]