BIOS update issue

I really need to update my bios but my battery is dead ( only works when plugged to the wall) is there a way to do so on Toshiba satellite L40-B? Back story I bought my computer in 2014 with bios 1.0 and windows 8 when win10 arrive I did the update but since couple of years the update from...

So last night I received a notification for bios update from my Lenovo yoga 510 14IKB and I started the update. I left the laptop for a while since it went for a restart but when I checked after a while then I saw the power led on but no display. I let it be for a while thinking it's updating...