MINIX NGC-1 BIOS v1.3 is available to download from below:
Download Link 1 [MINIX Forum Server]:
https://files.theminixforum.com/shared/bios/NGC-1-BIOS-V1.3_Win.zip
Download Link 1 [MINIX Forum Server]:
https://files.theminixforum.com/shared/bios/NGC-1-BIOS-V1.3_Win.zip