Aurora R12, components replacement again?

Right now, I've found out my BIOS is not updating. I thought I was installing BIOS updates normally, but now I've realized It's not.

The current version of my BIOS is 1.1.1; I've tried to install versions 1.1.17 and 1.1.2 without success.

I'm worried and tired of this kind of hardware problem. I've found out online some guys are having the same issue, which was solved by replacing the whole motherboard. Months ago, I had some video issues, and DELL technicians couldn't solve the problem, and they replaced almost every part of my computer. They replace the motherboard, RAM modules, and GPU. My warranty runs out on November 29th, and nearly every problem I've had with my computer seems unsolvable unless I replace hardware components. That makes me not trust your products at all. I want my problem solved before my warranty runs out or a warranty extension.