No, the leds never worked, neither before I uploaded the firmware nor before I uploaded the proper file. When I plug it in, sometimes the SMD leds briefly flash, but they don’t stay on.
I looked around online and made sure that i was uploading that proper file like you said, but it seems like the main problem is that the program cannot detect the keyboard. Whenever I press any of the connect buttons while the keyboard is plugged in, nothing is detected.
But then the in switch leds don’t work either. I have no idea, but none of the leds on the keyboard are working.