1. rmk127's Avatar
    ok i have a black iPhone 16gb

    i installed 3.0 firmware
    jb with redsn0w, everything went perfect
    unlock by adding source in cydia, repo666.ultrasn0w.com with 3G turned off
    and installed ultrasn0w

    inserted my SIM card and everything worked great..

    for 2 hours

    after that, my signal bars became unstable

    i also had fake signal, which means that i have bars
    but i cant make call, nor send or receive text messages
    but i STILL have signal bars on the top

    so now, its just one of those on and off phones
    i put my SIM in my motorola phone and i great great signal and never lose a bar

    but as soon as it enters the Jailbroken and Unlocked iPhone,
    my signal becomes unstable
    i get everything from full signal to no bars to no service to no sim installed

    so i was wondering if anyone can post steps to
    -downgrade to 2.2
    -downgrade to 2.28 baseband
    2009-07-09 01:54 AM
  2. iPhoenix3g's Avatar
    Are you on t-mobile UK or US?
    2009-07-09 08:56 PM
  3. rmk127's Avatar
    2009-07-10 06:54 AM