Should i put check on boot flash

Dear supporter i have just flashed NOKIA X RM-980 ,,,successfully,,,but one thing i just wanna to know that IS IT NECESSARY TO PUT CHECK ON BOOT FLASH ? i didint put on this check ,,,but for my knowledge i just wanna to knbow about it ,,,,,if anybody does know its utility ,,,,plz tell me ,,,will be apretiated ,,,

Waiting for kind replies,,,