Quoted from PhantomO:
Update on my multi ball release from the left ramp lock during movie mode. This has also happened when not starting movie mode, and the lock release post's timing is erratic and nonconsistent. It stays down too long or pops up too fast and kicks the ball in the ass on its way out. The coil is running hot also. Anyway, I reloaded the new code, but the problem persisted. Then I loaded the old 12.12 code, and the post now acts normally. Josh has all the info and is on it.
I had some weird coil/power stuff after the update also.
Reload the newest code.
Revisit the related coil problem.
Adjust coil in the settings menu til it works better.
Reboot the game.
Check coil again.
If the setting still isn't right, or if it didnt hold:
Readjust the coil.
On my game the settings stabilised on the second adjustment after power cycling the game twice.
Kinda weird but finally stabilised.