Public pressure. Well maybe; but I kind of doubt it.
The original soft start LM465s didn't flash correctly as they always tried to ramp up and down. With the security House Code. All Lights On, All Units Off. I have a later date code LM465 and all of a sudden. They start to ramp but then revert to flashing with the continuous code string.
I believe only X10 may know when the firmware in them changed. There was no public announcement like "Flashing Problem Fixed"!
Some older SH10A Small Powerhorns also have some problems. So it is just not the older PH508s.