WARNING: Do NOT install the Lumia cyan update if you use bitlocker

[khader_moham]

Warning– Do not Install the WP8.1 update if you use Bitlocker! | WMPoweruser



It appears some users got stuck on some bitlocker screen. The phone also refuses to boot.

The only option out is to reset your phone using the Nokia recovery tool

 

[Jazmac]

I don't use it but thanks for the heads up.