LG H815 Error Screen lock reset

LG 2-3G Tool v9.48
supported models: 1555

Mode: Emergency
Model: H815
Read info...
Laf Protocol: 01000004
Model name: LG-H815
Software verion: H81520l
Android verion: 6.0
Target operator: GLOBAL
Target country: COM
Chipset: msm8992
IMEI: XXXXXXXXXXXXXXX
Elapsed: 4 secs. --> (v9.48)

Phone mode is DOWNLOAD
Start reset screen locks...
Laf Protocol: 01000004
Model name: LG-H815
Software verion: H81520l
Android verion: 6.0
Target operator: GLOBAL
Target country: COM
Chipset: msm8992
IMEI: 357916070165614
Init EXT4 ...
Truncate file 0... done
Truncate file 1... not found
Truncate file 2... not found
Truncate file 3... done
Truncate file 4... done
Truncate file 5... done
Save EXT4...
Laf cmd info: send LAF_CMD_WRITE, retry #1
Laf cmd info: send LAF_CMD_WRITE, retry #2
Laf cmd info: send LAF_CMD_WRITE, retry #3
Laf cmd error: LAF_CMD_WRITE could not write.
Error reset locks
Elapsed: 616 secs. --> (v9.48)

Now phone starts only in Download mode...