G960U T-Mobile It Was Google Locked, After Flash Combination File Now Phone is Dead.

hi i have this s9 g960u from tmobile google locked i tried to by pass it by flashing combination file. but after the flash was done phone is dead will not reboot will not go in download mode or recovery mode please i need help explanation what happened. i would appreciate anyone help when is plugged to computer it detected as Qualcomm hs-usb QDloader 9008
Operation: Flash
Selected model: SM-G960U
Software version: 34.11

File analysis... OK
Total file size: 0xA5DE672B (2653 Mb)
Searching USB Flash interface... COM4 detected
Setup connection... OK
Getting device info... OK
Set PIT file... OK
Reading PIT from phone... OK
Sending abl.elf... OK
Sending xbl.elf... OK
Sending xbl_config.elf... OK
Sending tz.mbn... OK
Sending hyp.mbn... OK
Sending devcfg.mbn... OK
Sending pmic.elf... OK
Sending aop.mbn... OK
Sending cmnlib.mbn... OK
Sending cmnlib64.mbn... OK
Sending keymaster64.mbn... OK
Sending qupv3fw.elf... OK
Sending sec.dat... OK
Sending apdp.mbn... OK
Sending msadp.mbn... OK
Sending bksecapp.mbn... OK
Sending storsec.mbn... OK
Sending vaultkeeper.mbn... OK
Sending engmode.mbn... OK
Sending NON-HLOS.bin... OK
Sending boot.img... OK
Sending recovery.img... OK
Sending vendor.img.ext4... OK
Sending system.img.ext4... OK
Sending persist.img.ext4... OK
Sending dqmdbg.img.ext4... OK
Sending carrier.img.ext4... OK
Sending modem.bin... OK
Sending dspso.bin... OK
Sending cache.img.ext4... OK
Sending odm.img.ext4... OK
Sending userdata.img.ext4...