locator soesnt work if you used nate true's jailbraik for 1.1.3
i have a 1.1.3 jailbroken iphone that i upgraded from 1.1.2 otb
i found out that when you use nate's upgrade, it doesnt upgrade the bootloader, it only upgrades the firmware, that is why the google maps locator doesnt work, try to use locateme or navizon they work prety well locateme works better, but you have to add a source
so if you want locator to work, you will have to give up the jailbreak
the choice is yours, if you didnt use the jailbreak, then you might not be in your providers network, you could be using a 3rd party tower that is registered with your provider
good luck