A Nintendo Switch secret has been removed. Datamining fans have discovered the hidden copy of Golf previously available on the system was removed with firmware update 4.0.0. “FLOG,” the code hidden in the firmware, has been removed and it is impossible to launch the game. (Thanks, SwitchBrew!)
Back in September 2017, it was discovered that people with a Nintendo Switch would be able to play a version of Golf, the NES game programmed by Satoru Iwata, under the right conditions. If the system date was set to July 11 and someone performed the hand gesture with the Joy-Cons that Iwata performed during each Nintendo Direct, the game would open up and allow people to play it in single or multiplayer with standard or motion controls.
As a reminder, this video from fire3element shows how the game was unlocked and played when the Nintendo Switch was running earlier firmware.
Golf was released on the NES in 1984 and was programmed by Satoru Iwata. Iwata passed away on July 11, 2015 and was the president and CEO of Nintendo.