[Elecraft] Adding KPA100 to an old K2 (#2592)

[paul]

What firmware upgrades are needed to add a KPA100 to a K2 (#2592, Rev A)?  
Current firmware version is 2.01H  1.02 (as shown in the display on power 
up). 

I have purchased (in addition to the KPA100) to bring the K2 up to Rev 
B:

K2ATOBKT (K2 rev A to B upgrade parts)
BFOMDKT  (K2 BFO & PLL upgrade)
E850138  (K2 temperature compensated PLL upgrade)
XFILMDKIT (2nd filter upgrade for the K2)

The last one is not necessary, I know.  

Upon reading the KPA100 manual, it appears that I need to purchase new 
firmware (K2FWMCIO $44) to make the upgrade work.  It seems to me when 
the KPA100 first came out, this firmware was part of the kit.  What 
happened?

I have an KSB2 (ssb upgrade, Rev D board, 1.04 firmware).  Does this also 
need an upgrade?  (FWSSB, $29)

I noticed that there is firmware for the K2 tuner (KAT2, $29).  Is this 
necessary also?

Paul
AD5IW