CP3 Keypad 4.19 or 4.20? #Keypad

Christopher M

Hello Everyone.
I acquired a nice used Mach 1 w CP3 and Keypad.  The keypad has Beta 4.20 installed on it.  Should I change it to 4.19.5 or is Beta 4.20 better?  Looking through the notes, it looks like Beta 4.20 is an upgraded 4.17 from 2012, but 4.19.5 is actually more recent at 2021 (based on date from here:  https://www.astro-physics.info/index.htm?tech_support/tech_support)  and 4.19.5 appears to have other feature upgrades like resume from more park positions.  The CP3 I upgraded to V2 chip for APCC if that makes any difference, and my keypad s/n is greater than 1565GTO.
Thank you and Merry Christmas, Happy Hanukkah, Happy Solstice and Happy New Year!