Same man!!! I got an ideapad flex 5 and when I try to install the bios update, i get the same error message. I also had to make multiple calls to lenovo just to find out they dont know how to fix it. so fu***** annoying!!!!!! Some pls help us!!!
EDIT: After trying a third laptop of the same type it finally worked. Idk i guess third time is a charm lol. if u got this laptop from costco, check if they have anymore and do what i did and check if u get that same error message. problem is that i did this yesterday and it seems that costco stopped getting more of these laptops and i had to drive like an hour to a costco which still had some left in stock. if youre out of luck with getting another laptop from costco perhaps just factory reset the laptop and first thing try to install the update before you do anything else.
I guess third time is a charm man. Go figure!