Certain software needs to be disabled during the Powerup sequence. Clearing memory is part of the Powerup sequence. There is a flag that is active during powerup that is used to disable software. Clearing memory involves a certain amount of initialization after the memory has been cleared. Some of that initialization code runs both during and after powerup and uses the powerup flag to disable portions of it.

The bug that is being fixed here is that the Memory Clear also cleared out the powerup flag, allowing software that was intended to be disabled, to run. In the specific instance that led to this discovery it caused the 0x8006095B task error. However, it is unpredictable what other sorts of errors this could or has been causing.