Hi Jake, 
 
	 
 
	I'm in the same situation, I cannot use the brightness control after install 10.12.6.
 
	DELL Latitude E7250 - 12,5" 1920 x 1080 - Intel HD 5500 - mac OS Sierra 10.12.6 - BIOS A19
 
	 
 
	Which Bootpack should I used  ?
 
	 
 
	E7450_HD5500_Only_A19_HS.zip
 
	E7250_A19_HS.zip
 
	 
 
	Many Thanks ~~~