I can't update the Walkman player software

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The following conditions can prevent the Walkman from completing a software update:

• The Wi-Fi connection status is unstable: Update in a location with a good Wi-Fi connection.
   
• The battery level of the player is less than 60%: Update the Walkman while it is charging and has at least 60% battery charge. If the battery is too low, the power could be turned off during the update and, as a result, the player may not restart.

• The free space of the internal shared storage is less than 2GB: Before attempting to update the software, check the capacity of the internal shared storage.
  Swipe the Home screen upwards and select  (Settings) — storage. If the free space is less than 2GB, increase the free space by transferring data to a computer or other device.
   
• The player does not proceed from the system update screen: If the system update is set to [Do not allow] in the settings, it cannot be updated. Try the following workaround:
  1. Select  (Settings) — Apps & notifications — See all xx apps to show all installed apps.
  2. From the dotted  menu at the top right of the screen, select Show system — System Update — Permissions.
  3. Turn the Storage item to ON.