Suspend bitlocker before updating bios
You will be asked to enter the recovery key every time you restart your computer unless you suspend and resume Bit Locker.
In order to avoid having to get into this dilemma, you can suspend Bit Locker before you run the BIOS update utility for you computer.
If Bit Locker was not suspended, the computer will not accept your Bit Locker key the next time your computer boots and the only way you can start your computer is with a recovery key.You might pause the Bitlocker encryption process, in order to speed up the performance or while performing other tasks, so that encryption can run later or you need more than the 6 GB worth of free space to continue deploying the system.When you run “manage-bde -pause c:” you are pausing the drive encryption of C:, but not the Bitlocker protectors on the system.This cmdlet supports the common parameters: -Debug, -Error Action, -Error Variable, -Information Action, -Information Variable, -Out Variable, -Out Buffer, -Pipeline Variable, -Verbose, -Warning Action, and -Warning Variable. You can specify the number of times that a computer restarts before the Bit Locker suspension ends by using the Reboot Count parameter, or you can use the Resume-Bit Locker cmdlet to manually resume protection.