[Elecraft] K3 sending ? instead of FA/FB when pressing REV

[Pierfrancesco Caci]

Hello,
when the radio is in AI2 or AI3 mode, pressing REV on the front panel
gets ? ? instead of FA and FB. Releasing REV reports the correct values
of FA and FB. Transcript from k3util command tester:

ai;AI3;?;?;FR0;FT0;FA00050082590;FB00050230130;FR0;FT0;
------^REV pressed
------------------^REV released

K3 software as follows:

DTBL0014.HEX
haux0271.hex
hdsp0271.hex
hfpf0114.hex
hmcu0425.hex
tboot8.hex

Also, what would be the difference between AI2 and AI3?

Pf

-- 
Pierfrancesco Caci, ik5pvx