In case if you have flashed latest SuperMan-Rom V1.5.1 using TWRP 2.0.3-0, Then you may lost IMEI, baseband etc, You can’t even able to make or receive any calls. Baseband version is ‘Unknown’ and IMEI & IMEISV (slot 1 & slot2 ) are ‘Unknown’ too.
You have to remember that do not use the wrong Samsung ROM in case you have use the wrong country origin from here then you may lost your network permanently. I always suggest to make a FFS backup before placing any ROM into your Samsung device. You need to make EFS backup before rooting your device.
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my Samsung galaxy note 9 have IMEI & baseband ‘Unknown’ please help me. Urgent