The update fixes a problem that stops Bit Locker encrypting drives because of service crashes in
The update only causes a problem with ASUS motherboards.
For this reason, it's worth checking whether you really need to update your BIOS.
Read the release notes of the latest version (and each version back to the one currently installed) to see whether it will add the features you need or fix a problem you're having.
But now that it's recommended, more users have downloaded the update, and more users have experienced problems with the update. Microsoft has also provided a solution, but you might not like it.
I checked in the sticky here, as well, and I didn't see a solution. I then stupidly found a USB thumb drive and thought it'd be brilliant to update my BIOS to its most recent 2013 update.
Identifying your BIOS version is easy: hold down the Windows key R to bring up the Run command prompt and type in msinfo32.
In the System Information window which appears, select System summary on the left and look for the entry BIOS Version/Date on the right.
Microsoft says, "After you install update 3133977 on a Windows 7 x64-based system that includes an ASUS-based main board, the system does not start, and it generates a Secure Boot error on the ASUS BIOS screen.
This problem occurs because ASUS allowed the main board to enable the Secure Boot process even though Windows 7 does not support this feature." The update wasn't causing many issues while it was optional.