My phone doing same thing insert sim card, took it to sprint a tech pull up a hidden menu and said my phone thought it was a international version and changed some setting he did not give me the code to do that,still having problem.
I have installed the recovery menu about 4-5 times,the problem I have my Lg Optimus S will not update PRL nor Data Services or Firmware,I get a error
(The Client failed to authenticate the DM Server (48) .Please try again later )