Xiaomi Mi A1 Simcards and Network issue after flashing stock Rom.

[heinz9]

Please help me with the simcards and network issues after I flashing April Stock rom on my MI A1, at first the issue is imei 0, then i manage to restore the imei with Qcn restore, but slot 1 simcard keep blinking on and off when i put simcard in it, and slot 2 sim card seems fine, but I need to change the prefered network type to 3g first until the small 3g logo appear above signal bar,then change it to 4g. When reboot the signal totally lost, and it say no service, unless I go to 3g 1st. I've tried flashing another stock rom but it doesn't work, ive tried clear modemst1 and 2 and fsg, but it dont change anything. Anyone please help me.