A: No. The final digit "0" indicates a specific revision. V1 often contains microcode updates for newer CPUs. Flashing a V1 onto a V0 board may work, but USB ports or PCIe lanes may fail. Stick to the exact match.
There are three primary scenarios where you require this specific binary file: ya4a194v0 bios bin
BIOS sizes are usually powers of 2: 2 MB (16 Mbit), 4 MB (32 Mbit), 8 MB (64 Mbit), 16 MB (128 Mbit), 32 MB (256 Mbit). Use command (Linux/macOS/Windows WSL): 4 MB (32 Mbit)
Locate the 8-pin chip on your motherboard near the CMOS battery. It will have a logo: 8 MB (64 Mbit)