Pls help lg h931 dead after frp try

Platform: LG
Selected model: H931
Put the phone into Download Mode:
1. Power phone OFF;
2. Press and hold "Vol+" button and connect USB cable.
Searching for a phone. Please wait...
Found phone on COM3
Reading info...
Detected phone model: LG-H931
Mode: Emergency
Initializing..
SW version: LGH931AT-01-V20f-310-410-AUG-27-2018-ARB00+0
Android version: 8.0.0
Platform: msm8998
Reading partition...
Reading BOOT...
ID: 0005E0E100310000
Operation is not safe and exist risk to damage the device!
Do You want to continue?
Backup saved as LG_H931_24-09-2019_22-00-05.dump file
Rebooting to Qualcomm 9008 mode...
Searching for a phone. Please wait...
Connecting...
Reading info...
QC HW ID: 0005E0E100310000
QC CPU: Snapdragon 835 MSM8998
QC SW VER: 00000000
Searching loader...
Sending loaders...
Loader send successfuly.
Reconnecting...
Chip SN: FFFFFFFF
Checking request..
Reading partition...
Rebooting phone
Performed by 1.7.9.0 Software version.

now my pc don't dectect phone again

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