Can 2nd bios be switched while running 1st bios?

[LOST TALE]

So in case I screw up on of the bios on the dual bios card, is it possible to recover the failsafe by fixing 1 bios or it's a 1 shot fuse?

[Helpful Tech Witch]

The 2 bioses are seperate.

You can switch to the other bios if you mess one up, then you can boot,  flip the switch to the bad bios, and use your fLash tool to flash a good bios to the corrupted bios.

[Oshino Shinobu]

You can boot into one BIOS, then once it's loaded you can switch to the other and flash the other one.

 

It's important to note that the BIOS is loaded from and then not touched once it's read from. So if you boot into one BIOS, then switch, you're still running on the first BIOS which was loaded into memory but if you flash the BIOS from there, it will write to whichever is selected by the switch. 

[LOST TALE]

2 hours ago, Oshino Shinobu said:

You can boot into one BIOS, then once it's loaded you can switch to the other and flash the other one.

 

It's important to note that the BIOS is loaded from and then not touched once it's read from. So if you boot into one BIOS, then switch, you're still running on the first BIOS which was loaded into memory but if you flash the BIOS from there, it will write to whichever is selected by the switch. 

I can switch bios while it's running?

[Oshino Shinobu]

5 minutes ago, LOST TALE said:

I can switch bios while it's running?

Yep. The switch determines which BIOS is loaded. Once it's loaded into memory, the system no longer needs to read from the BIOS chip so you can switch it to a different BIOS and flash it. It's designed this way so even if you brick one BIOS, you can load up the other one, then once it's running in memory, you can switch the switch to the other BIOS and flash it from within the working BIOS that's running in memory.