Hi Rajat,
Run the command
E:\usr\sap\OHM\SYS\exe\uc\NTAMD64\sapcpe.EXE
pf=\\OHM1\sapmnt\OHM\SYS\profile\OHM_DVEBMGS02_OHM1
manually and paste the log SAPup_trobleshooting.log and sapcpe.out
Also check the below sapnote
1828915 - Upgrade stops in MOD_INSTNR_PRE phase
With Regards
Ashutosh Chaturvedi