03-17-15 06:15 PM
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  1. ksennette's Avatar
    ksennette
    I just got a BB Z3. I updated to 10.3.1.2558 and I got the (Sim card from unknown source error). I did a security wipe and still got the error. I checked all the forums and Google and no luck so I decided to downgrade. I downgraded to 10.2.1.2941. The error message is gone and now my AT&T network is working again.
    03-17-15 01:06 AM
  2. jaydee5799's Avatar
    jaydee5799
    Q&A Team
    Ambassador
    Good to know because I have seen others with this error. Must be something about the Z3
    03-17-15 06:15 PM
« My BlackBerry Z3 is forever offline, I changed the sim card but nothing is helping. What else could the problem be? | How do I upgrade to OS 10.3.1 on my BB Z3? »

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