Why is my volvo shifting so hard?

What is your question?

I have a 2000 v70xc and usually when i'm downshifting from third or up shifting to 4th it will rev up to about 6,000 rpm's and then will shift very hard. I've seen the B4 servo update but i didnt know if that would solve my problem completley, or if i need to update the electronics?

How long has your 2000 Volvo V70 had this problem?

about a month