F-12C

Please check "How to Update your Software" and then update to the latest software. We apologize for the inconvenience.

Start of update	Model	Method	Update available until	Other
September 22, 2011	F-12C	Software update	September 30, 2014	N/A

Approximately 10 minutes

This update fixes the following issues:

• When the power is turned on, the mobile phone (handset) may freeze and restart.
• After the screen display turns off, the screen may not light when the Home button is pressed.
• When a new page is displayed in the browser, an already open window may occasionally not function properly.

• In addition to solving the issue above, updates also includes other enhancements to make better use of your mobile phone.
• All issues to date will be fixed by performing the latest software update.

New software is automatically downloaded and overwrites the existing software at a preset time (default time is between 2 a.m. and 4 a.m.).
Updates can also be made as desired by performing the operation below and following the instructions on the screen.
In standby, display "MENU" and select "Settings" → "About phone" → "Software Update".
Please refer to the F-12C Quick Guide for Updating Software below or P. 126 to 129 of your User's Manual for details.

F-12C Quick Guide for Updating Software (PDF format: 204KB)

• Update the software at your own risk.
• Read the update procedure carefully before you perform the software update.
• The software can be updated while keeping the data intact but be sure to back up any important data beforehand just in case there is a problem. For details on how to perform a backup, see the user's manual.
• Please note that the previous version cannot be restored once the software update has been performed.
• The applications you have installed yourself may no longer be able to be used if you update the software.
• The software cannot be updated if there is insufficient memory (5 MB or less) on the device. Remove any unnecessary applications to increase the amount of free space and then update the software.
• Do not remove the battery pack while updating the software. The software may fail to update.
• Recharge the battery before updating the software.
• Software cannot be updated in the following cases:
  
  • During a call/outside the service area
  • During international roaming
  • In airplane mode
  • While connected to a Wi-Fi network
  • While updating the OS version
  • When the date and time are set incorrectly
  • When there is insufficient battery power for the software update
  • When there is insufficient free space for the software update
• Updating (downloading and rewriting) software may take time.
• Calls cannot be made while updating the software (Voice calls can be received during downloading. However, downloading is interrupted when a voice call is received).
• When the software is updated, SSL/TLS communications are used for the connection to the server (DOCOMO site).
• It is recommended to update software in a location with a strong signal (four bars for the antenna icon) while keeping the phone stationary.
  • If the signal strength becomes weak and downloading of the software is interrupted, try updating the software again in a location with a good signal.
• If the software has already been updated, 'No update is needed.' is displayed when a check for software updates is made.
• During international roaming or when outside the service area, "The update cannot be performed during roaming or when outside the service area." message will be displayed.
• When the battery power required to perform the software update is unavailable, "The update cannot be performed because the battery is insufficiently charged. Fully charge the battery and then try performing the update again." message will be displayed.
• Any SMS messages sent to you during the software update are stored at the SMS center.
  • SMS can be received while the software is being downloaded but starting the mail application will stop the download.
• When the software is updated, information unique to your F-12C (model, serial number, etc.) is automatically sent to the server (software update server administered by DOCOMO). DOCOMO does not use the sent information for any purpose other than the software update.
• If the software update fails, 'Rewrite failed' appears and all operations may not be available. If this happens, visit a repair counter designated by DOCOMO.
• When a PIN code is set, the PIN code entry screen appears during the restart after rewriting and you are required to enter your PIN code.
• While updating the software, do not activate other applications.