if you interest to upgrade OS System just click on Quick Setup and click on Upgrade if your OS is Old then You Use you download Os and Past in File Manager and
Winbox is a small utility that allows the administration of Mikrotik RouterOS using a fast and simple GUI. It is a native Win32 binary but can be run on Linux and macOS (OSX) using Wine. All Winbox interface functions are as close as possible to Console functions, that is why there are no Winbox sections in the manual.
Download Winbox 32bit 64 bit for All Window Operating System
Click On Download Button to Download Latest version Win Box3.21 Version