VIA ApolloKT266/266A chipset (8366/KT266A+8233, Socket A) ATX Award BIOS V0122IAG.BIN BIOS for (8366/KT266A+8233) *** PCB Revision (100Y1998) .2MBit Flash .Aug/2001 built core .Initial Mass Production Release (14/Aug/2001) .2MBit Flash .Aug/2001 built core .Corrected CMOS "temperature reading" deviation issue (21/Aug/2001) .2MBit Flash .October/2001 built core .Added support on AMD "Athlon XP" CPU (Oct/2001) .2Mbit Flash .January/2002 built core .Added support on showing the name "Athlon XP 2000+" CPU (Jan/2002) V0125IAG.BIN BIOS for (8366/KT266A+8233) *** PCB Revision (010Y1998) / (000Y742A) .2MBit Flash .October/2001 built .Initial mass production Release for these newer PCB Revision .Support on AMD "Athlon XP" CPU (Oct/2001) .2MBit Flash .Jan/2002 built .Added support on showing the name "Athlon XP 2000+" CPU (Jan/2002) Important : ========== Please identify the exact PCB Revision before trying the BIOS change, because the BIOS for different PCB Revisions are NOT interchangeable !