SIM Card Not Supported error fix for SAM unlock:Caution: you need to know what carrier your iPhone 4/4S is locked to, you'll need that for later use. You also need SAM to be installed on your device. Here's the instruction. Step One: Check if you have correct version of SAM installed on your iPhone.
- First option how to do that: Go to Settings->SAM->Utilites find “Revert Lockdown to stock” and tap it. If you see stockification success message, everything's correct. In case if you have the error message - reinstall SAM from the original source.
- You can also go to Cydia and check the package version. If it's 0.1.14-1 or above - you're ok.
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