Hi, I've tried many apps to make photos with long exposure time, from fv-5 to freedcam and hedgecam, but in every camera exposure time always stops at 2 seconds. I've read that it's a software problem because MIUI version of A2 lite camera can go ...
Of course, as mentioned already; using Camera2 API / HAL3 and the MIUI Camera's Manual mode is the better option.
You can otherwise get it working in FreeDCam, albeit with Camera1 API:
Turn off / remove Camera2 API and reboot
Launch FreeDCam and...