Manpads shotdown AH-64D in Iraq

In 2006, an AH-64D or A is equipped with ALQ-144A (V) 3 or ALQ-144A (V) 5 is Manpad (many sources say that the Sa-7) shot down by rebels, so AH-64D truth was Sa-7B (by globalsecurity.org, it was upgraded in the mid-70s to jam against the classic IR) or Sa-16 (by armyrecognition.com, it is resistant specifically the ALQ-144 series jamming emitters)

http://usatoday30.usatoday.com/news/world/iraq/2006-05-15-iraq_x.htm

http://www.globalsecurity.org/military/world/russia/sa-7.htm
http://www.armyrecognition.com/russia_russian_army_light_heavy_weapons_uk/sa-16_gimlet_9k310_igla-1_man-portable_missile_technical_data_sheet_specifications_pictures.html

what mechanism ALQ-144 to use against IR seeker?

I think Sa-7B aka Strela-2M is only a rumor, Sa-7B absolutely no chance that it could pass without being fooled by the ALQ-144 IR counter, I think Sa-16/18 is likely because they are designed to attack all-aspect