Hi,
According to Acer, the BIOS you updated probably already came with the updated keys.
What might be happening is that the keys haven't been applied; you would have to reset the keys in the BIOS or select them manually.
Follow the procedure to check if you have the... keys
If possible, take a screenshot of the result.
While this is not a Microsoft website, it is the official site of [AN16-41/ Acer].
Thanks