g920p reboot only in recovery mode after flash MM 6.0.1 sammobile

hey , i recently try to update my gs6 with custom rom ( i bought it with custom rom) in settings show g920f but in download mode show g920p , so i flashed with stock rom 6.0.1 release yesterday , i found it in sammobile.com , i flashed with odin , now i stiil have recovery mode with this meesage : dm-verity verification failed/need to check drk first

please tell me any solution for this ?

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