V2 Plus Can I Update My TI-84 Plus V2.40 To V4.43?

Can I update my TI-84 plus v2.40 to v4.43? - v2 plus

My calculator is a TI-84 Plus v2.40, so you can never connect to my project together, because I can not find software v2.40. Only to find, some v2.43

HELP!