LG K40 Factory Reset, Hard Reset, Soft Reset, Network Settings – lmx420

There are 4 ways to reset an LG K40. Based on the severity of the problem we have to make use of the reset function. The 4 kinds of reset are Soft Reset, Factory Reset, Hard Reset & Network Settings Reset. They all are quite useful in troubleshooting.

Soft Reset & Network Settings Reset does not affect the data stored in the internal memory or SD card. However, the internal memory including apps & games, etc. are wiped during a factory reset / hard reset.

Let’s check them out in great detail with the help of the below screenshots & video –

1. LG K40 Soft Reset / Force Restart – lmx420

  • First Method

 

lg k40 soft reset

A soft reset is nothing but a normal restart. If your K40 is acting abnormally your first troubleshooting step should be a Soft Reset.

To perform a Soft Reset, long-press the power button as shown above.

 

 

how to soft reset lg k40

 

You’ll see various options on the screen. Select “Power off and restart”.

Now tap “RESTART” and wait for the phone to boot again.

 

  • Second Method

LG K40 Force Restart

Read moreLG K40 Factory Reset, Hard Reset, Soft Reset, Network Settings – lmx420

LG K40 Recovery Mode, Download Mode & Safe Mode – Tutorial

After Soft Reset, the most useful forms of troubleshooting on LG K40 are Safe Mode, Recovery Mode & the Download Mode. Soft Reset is nothing but a normal restart. It’s a quick fix and works most of the time.

However, for bigger issues as soft brick, overheating, app crash or being locked out due to a forgotten pattern or pin, we need to use the advanced modes of troubleshooting which are safe mode, recovery mode & the download mode.

Let’s deal with them one by one.

1. LG K40 Recovery Mode

The recovery mode is useful when you’re locked out due to a forgotten pin, pattern or password. You should use recovery mode to Hard Reset your K40 only in case you’re unable to reset the phone using the “Settings” app.

lg k40 factory data reset

Within the Phone Settings, we can do a Factory Data Reset by going to “Settings” < “Restart & Reset (General Tab)” < “Factory data reset”.

If locked out, then follow the below procedure to boot your K40 into Recovery Mode –

 

lg k40 recovery mode

Read moreLG K40 Recovery Mode, Download Mode & Safe Mode – Tutorial

LG K40 MetroPCS Firmware Download & Update -LMX420MM Stock ROM

The need to flash a stock firmware arises when either you’ve bricked your phone or unable to do OTA (Over the air) System update.

In some cases, the phone bricks when the firmware update process gets stuck in the midway. If your LG K40 is stuck on the firmware update screen then you’re at the right place.

To flash stock firmware /ROM on LG K40 we need to download a few files –

1. LG Mobile USB Driver v4.4.2 setup file – Download and install this file on your PC

DOWNLOAD

2. LGUP Dual Mode.zip  – Download & Extract this file on your computer

DOWNLOAD

3. LG K40 MetroPCS Stock Firmware ROM X420MM10g.zip – Download and extract this file on your computer

DOWNLOAD

LG K40 Stock Firmware / ROM Download & Software Update – MetroPCS LM-X420MM

Let’s divide the whole process into 4 steps for the ease of understanding –

STEP 1: Installing the USB Driver and booting the phone into Download Mode

 

LG K40 MetroPCS firmware download

 

Read moreLG K40 MetroPCS Firmware Download & Update -LMX420MM Stock ROM