Please help me

[Sahilattri001]

Hi i have recently installed custom rom in my device......but when i going to rollback to flash stock rom with odin tool it fails....i tried to flash with lastest firmware but it shows sw rev check fail ( bootloader ) device 7. binary 6...... please help me

[rap1021]

you're flashing older binary version 6.
your device has 7.
which device do you have

[Sahilattri001]

Samsung m20....but is doesn't have binary version 7

[rap1021]

Go to settings, about phone, software information and tell me whats written under service provider software version