MCP-1A 3.11.0 could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The program is included in System Utilities.
The latest version of the program can be downloaded for PCs running Windows XP/Vista/7/8/10/11, 32-bit. The most popular versions among MCP-1A users are 3.1, 2.0 and 1.0. The default filename for the program's installer is Mcp_1a.exe. We recommend checking the downloaded files with any free antivirus. This free software is an intellectual property of KENWOOD Corporation.
From the developer:
You can use the MCP-1A to create data such as memory channels and menus on a PC by connecting the TH-K2/K4, TM-271/471/281/481 to the PC by using an optional Programming Cable PG-4Y / KPG-22U (for the TH-K2/K4) or KPG-46A / KPG-46U (for the TM-271/471/281/481). By utilizing this software, you can enjoy the versatility of the Kenwood transceivers through the memory channel management or edit functions.
You may want to check out more software, such as ThinkPad Mobility Center Customization, Creative Live! Cam Doodling or UPSILON, which might be similar to MCP-1A.