do i still need to update bios of z87m?

[wow lugod]

if i use a non-k i5 4690 and pair it with asus z87m-plus, do still need to update first before putting the proc or just plug and play?

 

[anti-duck]

ASUS suggest BIOS version 1003 to use that CPU. Make sure you check the voltages in BIOS prior to booting into Windows though even if you do update the BIOS.

 

[wow lugod]

ASUS suggest BIOS version 1003 to use that CPU. Make sure you check the voltages in BIOS prior to booting into Windows though even if you do update the BIOS.

to update using usb, do i unplug the proc first?

 

[anti-duck]

You'll need to leave your current CPU on the board, update the BIOS, and then install the new CPU and remember to look at all the voltages, I've heard of some Z87 boards setting the core voltage ridiculously high for Haswell refresh chips.