On TV Show "Arrow", season 3 episode 18, we were introduced to a new villain Jake Simmons (Deathbolt). After his capture, they did a cross-over scene with "The Flash" with Ray and Cisco talking over the fact that Jake Simmons wasn't in Central city on the night the particle accelerator exploded, which made it unknown as to how he became a meta-human. But this was never mentioned after.
His second appearance was on "The Flash", season 1, episode 22, where he was killed by Captain Cold, like discarded.
So, what exactly happened? Did they discarded his story? How did he become a meta-human? Any cross-references with comics?