One person who received it like that found out they got a factory unlocked bootloader by accident after the XDA devs got a look at a system dump. This was on an S3. And yes, it only appears sparingly, usually on a cold boot (battery pull/0% battery).
Samsung Galaxy S® 4 MJA Rooted with CF Auto-Root Tutorial
HTC EVO Design 4G™ v4.0.3 Bootloader Unlocked & Rooted with HTC SuperTool v3
If it ain't broke, use a sledge hammer.