J737T1 Won't boot up even with full flash or combo

after backing up the cert, I tried to reset EFS and something went wrong. I assume DRK went bad. Now, the phone does not boot up all the way even with full 4 files flash and it wont boot up either with combination. :confused:

Any guidance will be much appreciated!



Checking Card Ok.
Verify Card verify ok...
Card OsVer 0004
GCPro SN:= [GC35FXXXXX]
GCPRO Activation := CARD IS ACTIVE

...Port list start...

...Port list end...

...Port list start...
SAMSUNG Mobile USB Modem #2 (COM4)

...Port list end...
Using Version...1.0.0.0064
Selected Port SAMSUNG Mobile USB Modem #2 COM4
Selected Model GT-I5508
Selected Task SAMSUNG ExynosEFS RESET

Searching phone...
Device Found..
MODEL=SM-J737T1;UN=CBJ00FE96464CC5;CAPA=32;VENDOR=SAMSUNG;F WVER=3;PRODUCT=BJTD4R;SALES=TMK;VER=J737T1UVS4ASB2 ;DID=0456cd0a0d34;
Init ok..
Device := SM-J737T1:USA:MTR:0:J737T1UVS4ASB2
Samsung Exynos EFS Reset Success..
Fail-Flash..
Possible New BootLoader Try Downgrade and retry...
Finish...

!!! Success !!!!
Restart Phone if not auto...
Total Time Take...00:01:13