For the 08G-P4-6286-KR - EVGA GeForce GTX 1080 FTW ACX 3.0 do you download both primary and secondary if you have a single 1080? 

Kaluu
For the 08G-P4-6286-KR - EVGA GeForce GTX 1080 FTW ACX 3.0 do you download both primary and secondary if you have a single 1080? 

Yes the gpu has two bios chips. You have to switch to the bios you want to flash before starting the flashing process. I have the same card.

My 1080 FTW was getting really hot when playing Battlefield 1 so I installed the new bios hoping to bring temps down.  But I have been seeing some weird behavior from my PC since I updated the Bios.
 
 At first when I updated the BIOS it finished ok but then my PC didnt want to restart.    And when I tried to load up into the new BIOS I got a totally black screen.   I had to go into safe mode with then redo the bios flash to get the bios on the master to work.
 
 But now every time I restart my PC the screen goes black when I usually get a screen for my motherboard.  And when I try to shut my PC down it wont go off.  Everything seems to turn off but my GPU stays lit up and my case fans.  Its like the PC wont turn off because the GPU is trying to stay on.

wedusk101

Kaluu
For the 08G-P4-6286-KR - EVGA GeForce GTX 1080 FTW ACX 3.0 do you download both primary and secondary if you have a single 1080? 

Yes the gpu has two bios chips. You have to switch to the bios you want to flash before starting the flashing process. I have the same card.

I only updated the primary, and restarted. Whoops Does it make a big difference? And what Flash are u talking about

Kaluu

wedusk101

Kaluu
For the 08G-P4-6286-KR - EVGA GeForce GTX 1080 FTW ACX 3.0 do you download both primary and secondary if you have a single 1080? 

Yes the gpu has two bios chips. You have to switch to the bios you want to flash before starting the flashing process. I have the same card.

I only updated the primary, and restarted. Whoops Does it make a big difference? And what Flash are u talking about

As far as has been said so far you don't need to flash the secondary if you don't ever intend to use it. But yes if you want to use the secondary you need to switch to the second bios and flash in the secondary.

Just flashed the new 1070 FTW BIOS. Find below the comparison in terms of Fan speed...
 
Original BIOS Master (86.04.1E.00.70)
GPU °C    /    Fan%  /  Fan RPM
62    /    0    /    0
63    /    Fans begin to rotate
67    /    18     /   480
68    /    22     /   600
70    /    28     /   750
71    /    33     /   900
72    /    38     /   1020

72°C max temp


New BIOS Master (86.04.50.00.72)
GPU °C   /     Lüfter %  / Lüfter RPM
33    /    0     /    0
64    /    30    /    950
66    /    34    /    1080    
68    /    39    /    1260    
69    /    42    /    1370
70    /    46    /    1500

70°C max temp

Flashed successfully.
 

 
Aggressive preset changed:

Quiet one:

sorry for the newbie question but what is that dual bios?
what should i install? i have the 1080 FTW 08G-P4-6286-KR

It should be how you go about it, but I don't get why the slave-BIOS-version showing up when in master-BIOS.
I did expect to see version change in nvidia control panel according to BIOS-switch-position. Maybe I'm misunderstanding something.
I went and run the master-BIOS update again - and use that for now. I like how the fans are not spinning in simple PC usage scenarios, and starts up when pushing the thing in games. Should the card crash/burn/die on me - RMA it ASAP!

Dual bios means you have 2 BIOSes on the card and a switch to change which one will be the used one. 1070 FTW has dual BIOS (nu all cards have this feature)