Issue: Some units after unlocking receive the message "Network Code Entered Successfully" but the Network is still locked.Â
Solution: Follow the instructions below to reinstall the OS and re-attempt unlocking after the install.
Download BB Link below
Follow instructions below
Warning: The following procedure will delete all data and applications on the BlackBerry device. If possible, back up the data prior to performing the procedure. For information on how to back up data from the BlackBerry 10 smartphone or BlackBerry PlayBook tablet, see KB33526.
Before proceeding, download and install (or update to) the latest version of BlackBerry Link found at www.blackberry.com/blackberrylink.
To reload the BlackBerry 10 OS or BlackBerry PlayBook OS, complete the following steps:
BlackBerry Link version 184.108.40.206 (Windows):
Open BlackBerry Link.
Ensure the computer is connected to the Internet.
Power off the BlackBerry 10 smartphone or BlackBerry PlayBook tablet.
Connect the device to the computer via the USB cable.
Under the Devices heading, click the device name when it is displayed.
Click Preferences at the top-right.
Under the General heading, click Reload Device Software.
Click the Reload button.