Hi about BIOS update advice : if it works don't fix it.
To find out what bios version you have:
1- when the computer boots, if you get a mobo splash screen press on tab or esc and you should see the BIOS version on the top of black screen somewhere.
2- boot in BIOS, their should be the info somewhere
3- download speccy and in the mobo section you should find it.
Most of the time you have to update bios if you get problems with cpu / memory and/or GPU.
If everything seems to work fine DO NOT UPDATE IT. So many time I have done it and a fail will cost you.