So basically I got my new laptop which is the Aspire E5-473. Now, my question would be, how would I update my BIOS? (I haven't updated it yet, i'm currently running the stock one.) Since I recently found out that there's currently a new BIOS update for the laptop model in the acer official website. And which one should I download and install?
To anyone who might ask why I'm planning to upgrade/update my BIOS, it seems like my battery's getting drained even if my laptop is turned off. (I had 30% last 4-5 days, when I opened up my laptop today, I only had 5% remaining) Thinking that updating my bios would be the fix for this.
I downloaded one and it just said to run the executable file but I'm afraid I might do it wrong and brick out my new laptop. Any help would be glady appreciated. Thank you! 
P.S : I made sure that this is the right model of my laptop, I also have searched my drivers using the serial number attached below my laptop.
