Fw5000.upd ((install)) -

: It is used for updating bookshelf speaker models such as the Sharp CP-SS30 Specialized Hardware

When you download a firmware revision for a 5000‑series controller, the package often extracts to one or more .upd files, with fw5000.upd being the main firmware image. fw5000.upd

While exact steps can vary by brand, the general process for applying this update is: : It is used for updating bookshelf speaker

Wait for the device to automatically restart or enter standby mode. fw5000.upd

You should open it with regular software. It is a binary firmware image meant to be consumed by the hardware. Attempting to open it in Notepad or a hex editor is harmless but pointless.