I have a rooted SG4 i337 with Safestrap and 4.2.2. My original stock ROM works fine. My Shostock ROM is unable to read the micro SD, and it just lost its imei and ServiceBox. Safestrap can manage up to 5 ROMs, I am having a difficult time imagining how one device can manage up to 5 ROMs. If I could figure out how to manage just 3, I would be happy. Does anyone have any good resources to learn how to do this?