Want to update iPhone

[SpartanJohnson]

I have an iPhone that I unlocked forever ago, and was wondering if there is a way to update it to a latter firmware so I can use apps? It's also jailbroken, but I only really want it to stay unlocked. It's version 1.1.4 (4A102)

Is there a pretty safe way to update this? Or should I stay where I am?

[iphonepro101]

wow...it's old....
the latest jailbreakable version is 2.2.1.
download firmware 2.2.1 from internet, then use itunes to update it....then...jailbreak it.