Really need help jailbreaking iphone, PLEASE! Cant find firmware!
Ok, I have an iphone 3g 8gb that I bought off ebay as an "unlocked" phone. I went to T-Mobile and bought a sim card on a prepaid plan. When I turn on the iphone it just says "connect to itunes" and "emergency calls only". I have been trying for days now to get this thing jailbroken so i can use it but the biggest problem im having is finding my current firmware and all that. The phone is locked so i cant go to settings and whatever else to find it. Ive tried dialing that *#3001#12345*# or whatever it is and it does nothing. Some people have said to just update firmware connect to itunes hold shift and click restore from "right pane?". When i connect mine to itunes it says "insert a valid sim to unlock this iphone" and thats the ONLY option i get. I cant use itunes to update it and i cant even use redsn0w because i have no clue what firmware version its currently using. PLEASE HELP!!!
ALSO would like to add: Ive downloaded redsn0w 0.9.2 as well as 0.9.6re8 and tried the jailbreak but I keep running into the same problem. When i select the firmware for the 3.0 ipsw it recognizes it and i click "Install Cydia" and it goes al the way to where it says "Downloading Jailbreak Data" and has the spinning (loading) icon. The phone finally turns off and right back on and i see the apple logo and then its right back to the connect to itunes/emergency calls only screen. So jailbreaking using redsn0w and the 3.0 firmware fail time and time again and any other firmware i download and use redsn0w on redsn0w says "unable to recognize specified ipsw".
Also would like to add ive tried running the Tiny Umbrella.exe and i get error message "No JVM could be found on your system. Please define 4exe_java_home to point to an installed 32 bit JDK or JRE or download a JRE from www.java.com"
I am running windows vista ultimate if that helps.
Thanks in advance for any help or advice!