Hi there and welcome
Yes you do, to version 2.5.8
you can do this via the link below
you have the wireless version
Click on and download the file
Then connect the Kindle to the computer
And follow the instructions to update here
I can also do these steps for you, and have made a request via Additional Services. This is optional, and if you choose to do this, I can, with your permission, remote into your computer while you watch and do all these steps (and deal with any problems that arise during them) for you. Or if you do not choose to take this service, we can continue here. This is no problem at all. Just let me know please.
Else let me know how you go
ok... well its a shame you did that once receiving the complete and detailed answer, but of course, that is up to you.