The low compression may be due to fuel wash on the cylinder walls.( over cranking with no spark but injectors still firing fuel) Easy way to check this is oil seems.thinner than usuall or smelling like fuel.

Quick way to fix this problem is disconect injectors Remove spark plugs and add a teaspoon of oil in each cylinder this should seal the rings again. Put plugs back in and crank engine.

Most importantly find out why you have no spark if
you dont