In some cases the email inbox may not be appropriately displayed to you after the S710.10S.FF18. You may see see several rows of mail but no text displayed, along with expand/collapse arrow to the far right of each row; however, selecting the arrow to expand will still not display the message detail.
To fix this, launch Email and press Menu > Settings > Font Size. Change the Font Size to “Normal”. This will resolve the email display. After completing this step, the email font size may be adjusted back to the desired setting.