sv2g0401.zip VL/I-486SV2GX4 Rev 2.0, 2.1, BIOS ver. 0401. Support Cyrix DX4 CPU. Support Cyrix M1SC/5x86 CPU. Support AMD DX4 CPU. sv2g0402.zip VL/I-486SV2GX4 Rev 2.0, 2.1, BIOS ver. 0402. Support AMD 5x86 CPU.