Cx4.bin

Custom "Jailbreak" firmware for the Analogue Super NT - GitHub

: Required for users running "jailbroken" firmware who want to play these specific games via the SD card. It must typically be placed in a folder named /BIOS/ at the root of the SD card. cx4.bin

This means you have the wrong version of the file. The original CX4 chip had minor revisions; some arcade boards used a different math table. Delete your file and source one with the MD5 hash listed above. Custom "Jailbreak" firmware for the Analogue Super NT