diagnostic led code can often be misleading. In general bios can be upgraded with small version gaps but not downgraded.  It is risky to update bios version over a large gap.  Not good idea to update from A00 to A07 in one leap.  Not good either to go back from A07 to A00. If bios is corrupted and motherboard bricked, can try replace CMOs chip. But 380 motherboard itself costs $10-15. why bother repairing when replacing the board is cheap.
Hello everybody. I know it's weird to ask a question about 380 in 2021. But I did an upgrade and it worked well as a PC for simple tasks.My system has a Quad 600 video card. Quadro B9400 processor. and 2 * 2 RAM. It worked well. But. I decided to experiment with installing different BIOS versions. So when I came to Bios A00 my PC won't start. He makes a beep and 1.3. green indicator light. And now I cannot cancel it. I can not start the system to install another BIOS (which has worked in the past).Please advise what I can do and what the problem might be.
The problem with the BIOS and the launch of the system.