bootloader lg h440n

[columbo]

How to unlock bootloader and root LG H440n!?
LG H440N (Spirit LTE) at USB [FASTBOOT] {Get Device Info}
FastBoot Port not Found: 0
Thx!

[Sha]

Can Use RAW Flash Read/Write for this:
Backup Interesting partitions, at first (In Raw mode, not TOT):
LG H410 (Wine Smart II) at USB (COM142) [LG FLASH 5] {Read Flash}
DL MODE : 2
DL REQM : 5
DL MODEL: LG-H410
DL SWVER: H41010e
LF MODEL: LG-H410
LF SERNO: LGH410876b411c
LF SWVER: LGH410AT-00-V10j-GLOBAL-COM-FEB-03-2016+0
LF MINOS: MiniOS 3.0
LF OSVER: 5.1.1
LF DVPID: CD24S151114001002
LF SOCTY: msm8909
LF CABLE: USER
Partitions to Read: 2 (33.554.432 Bytes)
Flash Read Start: 0x0004C000 Count: 0x00008000 (Blocks) boot
Flash Read Done in: 00:01.531, 0x00008000 Blocks (16.777.216 Bytes)
Saved as: H410_ST_0004C000_SZ_00008000_PT_boot [2017_11_20_10_02_49].bin
Flash Read Start: 0x00054000 Count: 0x00008000 (Blocks) recovery
Flash Read Done in: 00:01.406, 0x00008000 Blocks (16.777.216 Bytes)
Saved as: H410_ST_00054000_SZ_00008000_PT_recovery [2017_11_20_10_02_49].bin
Path: D:\LG_FILES\H410\READ\
Done in: 00:27.344
RESTART : 2

Saved as: H410_ST_0004C000_SZ_00008000_PT_boot [2017_11_20_10_02_49].bin

ST_xxxxxxxx = Start Address of Partition in Sectors, mandatory, must match with GPT
SZ_xxxxxxxx = Partition Size in Sectors, mandatory, must match with GPT and File size must be same or smaller)
PT_realpartition = Partition Name, mandatory, must match with GPT
[My Comment]

Now Rename your insecure Kernel (boot) which you wish to flash to:
H410_ST_0004C000_SZ_00008000_PT_boot [Insecure].bin
(Here must match ST, SZ and PT parts of name)

Select this File with [Add File] button and Flash it:
File: H410_ST_0004C000_SZ_00008000_PT_boot [Insecure].bin
Partitions (Chunks) to Flash: 1 (16 MB)
LG H410 (Wine Smart II) at USB (COM142) [LG FLASH 5] {Write Flash}
DL MODE : 2
DL REQM : 5
DL MODEL: LG-H410
DL SWVER: H41010e
LF MODEL: LG-H410
LF SERNO: LGH410876b411c
LF SWVER: LGH410AT-00-V10j-GLOBAL-COM-FEB-03-2016+0
LF MINOS: MiniOS 3.0
LF OSVER: 5.1.1
LF DVPID: CD24S151114001002
LF SOCTY: msm8909
LF CABLE: USER
Writing Partition: boot
Flash Write Done in: 00:01.219

In this way can Read/Modify/Write any partition
and not need to Unlock bootloader

for Root need boot or recovery
depends how you want to root

During Read, you backup your partitions and have real Start, Size and Name