Hard downshift 2nd to 1st when stopping

[sv1cec]

What the title says, when I am stopping, as the car speed approaches zero, some times it downshifts hard to the 1st gear, unless I am braking a lot. I like to gently cruise to a stop and slightly releasing my brakes just as the car comes to a halt, but if I do it that the car jerks forward.

I read somewhere that perhaps the gearbox software needs to be upgraded. Is that true?

Thanks for your help.

2005 X5 diesel 3.0lt.