not sure if this is where this really belongs since st is cdma and gsm or if you even know you posted this in the iphonecdmatool's support forum,but the answer is the only tool that can flash the 4s,5 and all other cdma idevices is the soon coming release from iphonecdmatool.com,the gsm st service would require an unlock and proper apn/carrier bundle to work on those sim card based networks.
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