Question [Q] Swap Sd Crads in Android 4.2.2 {Samsung ROM's}

I have Samsung Galaxy ACE 3 Duos {GT-S7272} and I try to swap my sd card by modifying the ""Vold.fstb"" file but it leads my phone to BootLoop so if any one knows how to swap sdcard in Android 4.2.2 {Samsung Rom's} please tell me how to ........