ls450 unlock problem

yesturday i try to unlock this model ls450

and got this error and now phone no imei no moden and power on and off

i try 9.43 and 9.47 and nothing

diferent pc and nothing


LG 2-3G Tool v9.43
supported models: 1553

Mode: Emergency
Model: LS676
Read info...
Laf Protocol: 01000004
Model name: LGLS450
Software verion: LS450ZVA
Android verion: 6.0.1
Target operator: SPR
Target country: US
Chipset: msm8909
IMEI: 356848075551269
Elapsed: 6 secs. --> (v9.43)

Phone mode is DOWNLOAD
Start new sprint unlock...
Laf Protocol: 01000004
Model name: LGLS450
Software verion: LS450ZVA
Android verion: 6.0.1
Target operator: SPR
Target country: US
Chipset: msm8909
IMEI: 356848075551269
Init EXT4 /system ...
Detecting sprint type ... using old write method...
test1
test2
test3
test4
test5
Laf cmd info: send LAF_CMD_IOCTL, retry #1
Laf cmd info: send LAF_CMD_IOCTL, retry #2
Laf cmd info: send LAF_CMD_IOCTL, retry #3
Laf cmd error: LAF_CMD_IOCTL could not write.
Elapsed: 248 secs. --> (v9.43)