This type of thing will absolutely, undoubtedly boomerang back to the imperial core. And when it does all the libbies who shrugged at the genocide and ignored our warnings that the violence will end up blowing back at them will just move the goalposts again. I hope other enemies of the state are observing all of this and triple-checking their supply chains.
It seems like this is the answer. The shipment that came in 5 months ago was contaminated with the explosive, which was detonated when the hack turned the temperature of the device up to the ignition point.