[Elecraft] firmware update?

[ON4WIX]

Hi all,

I'm new to this list and looking into building my own K2.
This evening I was browsing the European distributor's online shop as I was getting ready to order the parts I thought were necessary.
One of the options offered on the page is the firmware update, valued at 45,00 EUR.
Is this only necessary for older K2 models or is it necessary to order this upgrade even with a brand new kit?

Thanks for shedding a light on this subject. I can't wait to start building this baby...

73 from Belgium
Glenn ON4WIX