In the earlier days of Android, rooting was a one-click process without the need for a computer. Until Android lollipop, I rooted my LG phones in a single click using the king root app. I was able to root the phone even with a locked bootloader. I rooted my LG Tribute 2 in the same manner.
Later on, the root worked only on those devices with an unlockable bootloader. I rooted my LG K20 Plus after unlocking the bootloader.
In this rooting process, we need to –
- enable USB debugging
- boot into fastboot mode for bootloader unlocking
- install TWRP
- flash a Magisk or SuperSU root file via TWRP
Let’s try to follow the same procedure for LG K51 –
How to Root LG K51 LMK500 Boost Mobile, MetroPCS, T-Mobile
There are 2 kinds of rooting apps at present. Magisk is a systemless root. It can be enabled/disabled as per the requirement. Supersu by Chainfire is an age-old but popular rooting app.
To root our K51, let’s enable USB Debugging as follows –
To enable USB debugging, we need to go to the Developer Options page.
Let’s open Settings > System > Developer Options.
We need to toggle on “USB Debugging”.
I’ve accepted the “Allow USB debugging” request by hitting “OK”.
Now, we are ready to connect our phone to the computer for USB debugging.
The LGE Mobile ADB Interface driver is installed on my PC.
In the next step, I’m going to launch the “Minimal ADB & Fastboot” tool. Using this tool we can write the ADB command to enter fastboot mode.
We need to check whether the device is ready for USB debugging or not.
The command line adb devices shows our connected phone LMK500 but as unauthorized.
We need to authorize the connected computer by accepting the “Allow USB debugging” request received on the phone.
Now, the device LMK500 is ready for USB debugging.
LG K51 Bootloader Unlock
The ADB command to boot into the fastboot mode is adb reboot bootloader
Let’s try to enter this command line and tap enter on the computer keyboard.
This command simply reboots the phone. I tried this several times but to no avail.
I made a video on this as well. You can check the below video –
On LG K51, we don’t have access to the fastboot mode.
Without entering the fastboot mode, we cannot write adb command for bootloader unlocking.
The above screen belongs to LG K30 Fastboot mode.
The bootloader unlock command is fastboot oem unlock / fastboot oem device-id
We don’t have access to this fastboot mode on K51.
As of now, there is no way to unlock the LG K51 bootloader. We cannot root our device without unlocking the bootloader.
LG K51 TWRP – Custom Recovery
The above TWRP screen shows up after flashing the recovery.img file. The custom recovery can be flashed by writing the adb command fastboot flash recovery recovery.img
As we failed to unlock the K51 bootloader, there is no way to flash the TWRP custom recovery file.
The magisk or supersu root file can be flashed only after installing TWRP on LG K51.
LG K51 Custom ROM – LineagOS
A custom ROM such as Lineage OS comes in the form of a flashable zip file. A custom ROM can only be flashed via custom recovery such as TWRP.
As we failed to flash TWRP on LG K51, there is no way to install the LineageOS custom ROM on K51, as of now.
Let’s hope someday LG makes the K51 bootloader unlockable. Only after unlocking the bootloader, we will able to root our device.
If someone claims he can root your LG K51, he is fooling you. There is no way to root the K51 at present.
For any queries or feedback, please leave a comment below. Thanks for reading.