4-Play (1.51)     –  Firmware flashed at production.
4-Play (1.56.1)  –  Latest firmware version available for 1.x


4-Play Final (2.0) –  Newer firmware supporting advanced features (use the API tool for version info and programming). The API tool can be updated via source forge or downloaded here. At this time the API tool is only available on the windows platform.


4-Play (2.0) now available on the Nintendo Switch. 2.0 Features via the API need to be programmed with the normal 2.0 firmware but the saved programming will remain once the Switch firmware is loaded (such as mapping).  4-play mode supports 4 separate players if each port is flashed.

3.0 – Coming Soon!


WinUSB does not support control transfers correctly. Firmware 2.0 will not work with WinUSB. HidUSB is the default windows driver and the suggested driver for 2.0. Use this tool to check if you have WinUSB installed.

When flashing a new version of 2.0 you must first remove your existing drivers. This tool can help with the removal.

 The Flashtool may require C++ Run-times. The Flashtool is only required for 1.x, 2.0 is updateable within the API Tool. The API Tool does require Direct X Run-Times.
For Windows 7 use these run-times.
For Windows 10 use these run-times.

NOTICE:  Bliss-Box cannot support or endorse any unofficial firmware. If you are running a custom or modified unofficial firmware it could void your warranty. If an RMA is submitted and an unofficial firmware is loaded onto the device, Bliss-Box reserves the right to apply a fee upon returning the unit to you. The Flash Tool is an unmodified version of the original V_USB HIDBootFlash. This tool is used to flash devices using firmware 1.x. NOTE: do to the GLP license I left this unmodified. So make sure to update the Product ID to the image shown below.


The API Tool is a tool to demonstrate and use the Bliss-Box 4-Play to its full potential. The tool is released open source for any to use and modify but may not be sold for commercial use. 

The API has many features for use with the 4-Play adapter.  From programming preferred settings to pulling info about the adapter to interfacing with controller peripherals.

This tool only supports 2.0 firmware and will guide you in updating your existing 1.x device to 2.0 as well as programming the ports with individual player IDs.