[LG K8 Questions & Answers] ~R1:
Sure! I have a Windows 10 64bits machine on my PC and as it gave me problems with SP Flash tool, I created a virtual machine in virtualbox with windows xp 32 bits to use it on it.

You do not have to put the phone in any state. Turn the device off and then when you connect it by usb to the PC, the "Mediatek Preloader VCOM" port is activated for a few seconds.

In my case I used the official version of SP Flash Tool version 5.1612 and you need to install the LG and Mediatek drivers for MT67XX.

Have you used SP Flash Tool before? You need a special Download Agent and I have created an Scatter File which I have not checked if it is well done.

The Download Agent that I used is named DA_SWSEC_CRYPTO20.bin - 4.417.052 bytes -> https://my.pcloud.com/publink/show?code=XZ1btT7ZvGc5GqNN6q7r2xE1kPYUVp7ckr8k

PD: The X240AR I'm not sure if it has an MT6737 or MT6735 or if they behave in a similar way.

It's a 16GB Internal Memory Model.

The Scatter File I create but don't full test (from full dump on X240AR):

Save as MT6737M_Android_scatter.txt

#########################################__WwR_MTK__########################################################
#
# General Setting
#
#########################################__WwR_MTK__########################################################
- general: MTK_PLATFORM_CFG
info:
- config_version: V1.1.2
platform: MT6737M
project: lv3
storage: EMMC
boot_channel: MSDC_0
block_size: 0x20000
############################################################################################################
#
# Layout Setting
#
############################################################################################################
- partition_index: SYS0
partition_name: preloader
file_name: preloader_lv3.bin
is_download: true
type: SV5_BL_BIN
linear_start_addr: 0x0
physical_start_addr: 0x0
partition_size: 0x40000
region: EMMC_BOOT1_BOOT2
storage: HW_STORAGE_EMMC
boundary_check: true
is_reserved: false
operation_type: BOOTLOADERS
is_upgradable: true
empty_boot_needed: false
reserve: 0x00

- partition_index: SYS1
partition_name: pgpt
file_name: NONE
is_download: false
type: NORMAL_ROM
linear_start_addr: 0x0
physical_start_addr: 0x0
partition_size: 0x80000
region: EMMC_USER
storage: HW_STORAGE_EMMC
boundary_check: true
is_reserved: false
operation_type: INVISIBLE
is_upgradable: false
empty_boot_needed: false
reserve: 0x00

- partition_index: SYS2
partition_name: proinfo
file_name: NONE
is_download: false
type: NORMAL_ROM
linear_start_addr: 0x80000
physical_start_addr: 0x80000
partition_size: 0x300000
region: EMMC_USER
storage: HW_STORAGE_EMMC
boundary_check: true
is_reserved: false
operation_type: PROTECTED
is_upgradable: false
empty_boot_needed: false
reserve: 0x00

- partition_index: SYS3
partition_name: nvram
file_name: NONE
is_download: false
type: NORMAL_ROM
linear_start_addr: 0x380000
physical_start_addr: 0x380000
partition_size: 0x500000
region: EMMC_USER
storage: HW_STORAGE_EMMC
boundary_check: true
is_reserved: false
operation_type: BINREGION
is_upgradable: false
empty_boot_needed: false
reserve: 0x00

- partition_index: SYS4
partition_name: protect1
file_name: NONE
is_download: false
type: EXT4_IMG
linear_start_addr: 0x880000
physical_start_addr: 0x880000
partition_size: 0xa00000
region: EMMC_USER
storage: HW_STORAGE_EMMC
boundary_check: true
is_reserved: false
operation_type: PROTECTED
is_upgradable: false
empty_boot_needed: false
reserve: 0x00

- partition_index: SYS5
partition_name: protect2
file_name: NONE
is_download: false
type: EXT4_IMG
linear_start_addr: 0x1280000
physical_start_addr: 0x1280000
partition_size: 0xa00000
region: EMMC_USER
storage: HW_STORAGE_EMMC
boundary_check: true
is_reserved: false
operation_type: PROTECTED
is_upgradable: false
empty_boot_needed: false
reserve: 0x00

- partition_index: SYS6
partition_name: lk
file_name: lk.bin
is_download: true
type: NORMAL_ROM
linear_start_addr: 0x1c80000
physical_start_addr: 0x1c80000
partition_size: 0x100000
region: EMMC_USER
storage: HW_STORAGE_EMMC
boundary_check: true
is_reserved: false
operation_type: UPDATE
is_upgradable: true
empty_boot_needed: true
reserve: 0x00

- partition_index: SYS7
partition_name: para
file_name: NONE
is_download: false
type: NORMAL_ROM
linear_start_addr: 0x1d80000
physical_start_addr: 0x1d80000
partition_size: 0x80000
region: EMMC_USER
storage: HW_STORAGE_EMMC
boundary_check: true
is_reserved: false
operation_type: INVISIBLE
is_upgradable: false
empty_boot_needed: false
reserve: 0x00

- partition_index: SYS8
partition_name: boot
file_name: boot.img
is_download: true
type: NORMAL_ROM
linear_start_addr: 0x1e00000
physical_start_addr: 0x1e00000
partition_size: 0x1000000
region: EMMC_USER
storage: HW_STORAGE_EMMC
boundary_check: true
is_reserved: false
operation_type: UPDATE
is_upgradable: true
empty_boot_needed: false
reserve: 0x00

- partition_index: SYS9
partition_name: recovery
file_name: recovery.img
is_download: true
type: NORMAL_ROM
linear_start_addr: 0x2e00000
physical_start_addr: 0x2e00000
partition_size: 0x1000000
region: EMMC_USER
storage: HW_STORAGE_EMMC
boundary_check: true
is_reserved: false
operation_type: UPDATE
is_upgradable: true
empty_boot_needed: false
reserve: 0x00

- partition_index: SYS10
partition_name: logo
file_name: logo.bin
is_download: true
type: NORMAL_ROM
linear_start_addr: 0x3e00000
physical_start_addr: 0x3e00000
partition_size: 0x800000
region: EMMC_USER
storage: HW_STORAGE_EMMC
boundary_check: true
is_reserved: false
operation_type: UPDATE
is_upgradable: false
empty_boot_needed: true
reserve: 0x00

- partition_index: SYS11
partition_name: FLEX
file_name: flex.img
is_download: true
type: EXT4_IMG
linear_start_addr: 0x4600000
physical_start_addr: 0x4600000
partition_size: 0x20000000
region: EMMC_USER
storage: HW_STORAGE_EMMC
boundary_check: true
is_reserved: false
operation_type: UPDATE
is_upgradable: true
empty_boot_needed: false
reserve: 0x00

- partition_index: SYS12
partition_name: expdb
file_name: NONE
is_download: false
type: NORMAL_ROM
linear_start_addr: 0x24600000
physical_start_addr: 0x24600000
partition_size: 0xa00000
region: EMMC_USER
storage: HW_STORAGE_EMMC
boundary_check: true
is_reserved: false
operation_type: INVISIBLE
is_upgradable: false
empty_boot_needed: false
reserve: 0x00

- partition_index: SYS13
partition_name: seccfg
file_name: NONE
is_download: false
type: NORMAL_ROM
linear_start_addr: 0x25000000
physical_start_addr: 0x25000000
partition_size: 0x80000
region: EMMC_USER
storage: HW_STORAGE_EMMC
boundary_check: true
is_reserved: false
operation_type: INVISIBLE
is_upgradable: false
empty_boot_needed: false
reserve: 0x00

- partition_index: SYS14
partition_name: oemkeystore
file_name: NONE
is_download: false
type: NORMAL_ROM
linear_start_addr: 0x25080000
physical_start_addr: 0x25080000
partition_size: 0x200000
region: EMMC_USER
storage: HW_STORAGE_EMMC
boundary_check: true
is_reserved: false
operation_type: INVISIBLE
is_upgradable: false
empty_boot_needed: false
reserve: 0x00

- partition_index: SYS15
partition_name: secro
file_name: secro.img
is_download: true
type: NORMAL_ROM
linear_start_addr: 0x25280000
physical_start_addr: 0x25280000
partition_size: 0x600000
region: EMMC_USER
storage: HW_STORAGE_EMMC
boundary_check: true
is_reserved: false
operation_type: UPDATE
is_upgradable: false
empty_boot_needed: false
reserve: 0x00

- partition_index: SYS16
partition_name: keystore
file_name: NONE
is_download: false
type: NORMAL_ROM
linear_start_addr: 0x25880000
physical_start_addr: 0x25880000
partition_size: 0x800000
region: EMMC_USER
storage: HW_STORAGE_EMMC
boundary_check: true
is_reserved: false
operation_type: INVISIBLE
is_upgradable: false
empty_boot_needed: false
reserve: 0x00

- partition_index: SYS17
partition_name: tee1
file_name: trustzone1.bin
is_download: true
type: NORMAL_ROM
linear_start_addr: 0x26080000
physical_start_addr: 0x26080000
partition_size: 0x500000
region: EMMC_USER
storage: HW_STORAGE_EMMC
boundary_check: true
is_reserved: false
operation_type: UPDATE
is_upgradable: true
empty_boot_needed: true
reserve: 0x00

- partition_index: SYS18
partition_name: tee2
file_name: trustzone2.bin
is_download: true
type: NORMAL_ROM
linear_start_addr: 0x26580000
physical_start_addr: 0x26580000
partition_size: 0x500000
region: EMMC_USER
storage: HW_STORAGE_EMMC
boundary_check: true
is_reserved: false
operation_type: UPDATE
is_upgradable: true
empty_boot_needed: false
reserve: 0x00

- partition_index: SYS19
partition_name: frp
file_name: NONE
is_download: false
type: NORMAL_ROM
linear_start_addr: 0x26a80000
physical_start_addr: 0x26a80000
partition_size: 0x100000
region: EMMC_USER
storage: HW_STORAGE_EMMC
boundary_check: true
is_reserved: false
operation_type: INVISIBLE
is_upgradable: false
empty_boot_needed: false
reserve: 0x00

- partition_index: SYS20
partition_name: nvdata
file_name: NONE
is_download: false
type: EXT4_IMG
linear_start_addr: 0x26b80000
physical_start_addr: 0x26b80000
partition_size: 0x2000000
region: EMMC_USER
storage: HW_STORAGE_EMMC
boundary_check: true
is_reserved: false
operation_type: INVISIBLE
is_upgradable: false
empty_boot_needed: false
reserve: 0x00

- partition_index: SYS21
partition_name: metadata
file_name: NONE
is_download: false
type: NORMAL_ROM
linear_start_addr: 0x28b80000
physical_start_addr: 0x28b80000
partition_size: 0x2000000
region: EMMC_USER
storage: HW_STORAGE_EMMC
boundary_check: true
is_reserved: false
operation_type: INVISIBLE
is_upgradable: false
empty_boot_needed: false
reserve: 0x00

- partition_index: SYS22
partition_name: misc2
file_name: NONE
is_download: false
type: NORMAL_ROM
linear_start_addr: 0x2ab80000
physical_start_addr: 0x2ab80000
partition_size: 0x100000
region: EMMC_USER
storage: HW_STORAGE_EMMC
boundary_check: true
is_reserved: false
operation_type: PROTECTED
is_upgradable: false
empty_boot_needed: false
reserve: 0x00

- partition_index: SYS23
partition_name: lk2
file_name: lk.bin
is_download: true
type: NORMAL_ROM
linear_start_addr: 0x2ac80000
physical_start_addr: 0x2ac80000
partition_size: 0x100000
region: EMMC_USER
storage: HW_STORAGE_EMMC
boundary_check: true
is_reserved: false
operation_type: UPDATE
is_upgradable: true
empty_boot_needed: true
reserve: 0x00

- partition_index: SYS24
partition_name: mpt
file_name: mpt.img
is_download: true
type: EXT4_IMG
linear_start_addr: 0x2ad80000
physical_start_addr: 0x2ad80000
partition_size: 0xa80000
region: EMMC_USER
storage: HW_STORAGE_EMMC
boundary_check: true
is_reserved: false
operation_type: UPDATE
is_upgradable: true
empty_boot_needed: false
reserve: 0x00

- partition_index: SYS25
partition_name: system
file_name: system.img
is_download: true
type: EXT4_IMG
linear_start_addr: 0x2b800000
physical_start_addr: 0x2b800000
partition_size: 0xc0000000
region: EMMC_USER
storage: HW_STORAGE_EMMC
boundary_check: true
is_reserved: false
operation_type: UPDATE
is_upgradable: true
empty_boot_needed: false
reserve: 0x00

- partition_index: SYS26
partition_name: cache
file_name: cache.img
is_download: true
type: EXT4_IMG
linear_start_addr: 0xeb800000
physical_start_addr: 0xeb800000
partition_size: 0x20000000
region: EMMC_USER
storage: HW_STORAGE_EMMC
boundary_check: true
is_reserved: false
operation_type: UPDATE
is_upgradable: false
empty_boot_needed: false
reserve: 0x00

- partition_index: SYS27
partition_name: userdata
file_name: userdata.img
is_download: true
type: EXT4_IMG
linear_start_addr: 0x10b800000
physical_start_addr: 0x10b800000
partition_size: 0x29eb80000
region: EMMC_USER
storage: HW_STORAGE_EMMC
boundary_check: true
is_reserved: false
operation_type: UPDATE
is_upgradable: false
empty_boot_needed: false
reserve: 0x00

- partition_index: SYS28
partition_name: flashinfo
file_name: NONE
is_download: false
type: NORMAL_ROM
linear_start_addr: 0xFFFF0084
physical_start_addr: 0xFFFF0084
partition_size: 0x1000000
region: EMMC_USER
storage: HW_STORAGE_EMMC
boundary_check: false
is_reserved: true
operation_type: RESERVED
is_upgradable: false
empty_boot_needed: false
reserve: 0x00

- partition_index: SYS29
partition_name: sgpt
file_name: NONE
is_download: false
type: NORMAL_ROM
linear_start_addr: 0xFFFF0004
physical_start_addr: 0xFFFF0004
partition_size: 0x80000
region: EMMC_USER
storage: HW_STORAGE_EMMC
boundary_check: false
is_reserved: true
operation_type: RESERVED
is_upgradable: false
empty_boot_needed: false
reserve: 0x00

The apparently full lenght of firmware in X240AR - 16GB model buying it in "Claro Argentina" operator is: 0x3AB400000

Your X240F of what country is from?

Be careful, Do not flash Preloader unless you know what are you doing because if it is a corrupt or bad Preloader you could break forever the device. Just untick it when you flash new rom unless you know what you are doing.