Yes, the BIOS chip is removable. Check ASUS eStore or Ebay. They usually already come with the latest BIOS revision so there's no need to flash anything.
Hello I will try to help.
At first sorry for my bad english.
I have very similar problem like you.
What I do - flash new bios - ok.
Copy new bios from 1 to 2 - both bios dead and "00". ON/OFF loop.
What I try to repair - blond flash using USB method, clearing bioses, try to use bios2, bios1, truning off power totally and other methods.
Send mobo to RMA - I get new mobo.
Flash new bios and do the same - copy 1 to 2 - mobo dead - "00".
Both of them again "00" and ON/OFF loop.
Now I have 3rd mobo.........when new bios arrive I only flash bios1 and not touching copying or not touching bios2.....................
There is one more you can do - I contacted asus service in my country and tell them about this. They say I can send only bios chip/chips to their service and they will check them and flash.
When I contacted Asus support they just told me i would have to RMA the board, I asked if they could replace the BIOS chip alone and they said no. I'll try again and ask if i can send them my chip to test, see what they say?
any one happen to know where you can get the chips?