Steps to flash LG stock Firmware (All models)
Steps to flash LG stock Firmware (All models)
Hello everyone! Welcome back. Today, I’m going to discuss on the different steps to be followed to successfully flash stock firmware/ROM in LG smartphones/tablets. Android, being an open source provides the user to have a complete control on almost everything. We can root our device by flashing Custom ROMs and that lets us have some enhanced features on our smartphones.
But having Custom ROMs in our phones or the process of doing that is not easy as we say. One wrong step, and there you will be with your device bricked. In such cases, you should go for flashing stock firmware.
If you are having an LG phone or tablet, you can use the LG Flash Tool to install the official firmwares with .KDZ or .TOT extension to restore your device to stock. In case you’ve been experiencing some serious issue on your LG phone, or you just want to downgrade or upgrade device firmware, the LG Flash Tool is a must-have utility. Now, let’s discuss on the detailed steps to be followed to flash LG stock firmware.
Take a complete back up of data from your device as the flashing always wipes out the complete data from your phone memory.
Charge your Phone at least up to 70-75 %.
Before you connect your device to your PC by USB cable, You should make sure that any Antivirus in your PC is switched off.
Download LG flash tool and install it on your computer, also download and install LG USB driver.
- Select Type – 3GQCPT or CDMA you don’t want to get worry about selecting this option or that as Flashtool is modified only for devices with SIM.
- PhoneMode = DIAG
- Reset time = 33000
- Browse KDZ file (Rom) and Select it. (Locate to “LG flash tool 2014 Folder” There is the copied one)
Download KDZ firmwareon your LG device. Warning: KDZ firmware are different for different LG devices and model as well. A wrong KDZ firmware can brick your device.
connect your LG phone to your computer after turning it off. (usually, by pressing both the volume buttons). After connecting, it must show Download mode with the firmware update screen.
Select the type as CDMA, and then select the downloaded KDZ firmware file and hit CSE flash.
Normal Flash – “Normal Flash” If you want to install Stock Rom then you should select “Normal flash” another thing I want say, in this, you will not lost any data from applications and Internal memory and Memory chip.
CSE Flash – If you want to flash Custom Rom (Custom Rom is not official one. more details about custom Rom.) then, select “CSE Flash” as wel as in this, you will lose all your data from applications and Internal memory. CSE make a clean installation. you can flash Stock Rom with CSE too.
Ignore the message written on the next window and just hit the start button.
On the prompted window, Select your region, language accordingly and select clear phone registry and click OK.
It will take some time to complete. Once done, it should reboot automatically. Wait for some time for the process to complete.
I Can’t Boot to Download Mode on
- Power button
- Select Turn off the phone.
- press the volume up button on your LG
- During you are holding the volume up key, plug in your phone’s USB Data cable.
- Keep pressing the Volume up Key until the download mode appear.
Stuck on LG Model logo/keep restarting
“I can go to S/w Upgrade mode but i can’t go to Recovery mood”. If you face this kind of problem then install Stock Rom again. If you have any other problem please comment.
unresponsive to touch or power button controls
now my screen would become consistently unresponsive to touch or power button controls. I do Factory reset also, but problem persist. If you face this kind of problem,
please Try to Factory reset. If not works, then Try to CSE flash. Not the normal Flash. If not works download another Stock Rom because that Rom may be damaged.
Connection to server failed. Try again in a moment
Now it says ” Connection to server failed. Try again in a moment” And my phone sucked in Download mode.
Don’t press Ok and please wait because still copying in the background window and on phone screen as wel. however if not works then, Press power button and hold it till u get lg logo. any other problem? please comment
Problem with communication between cell phone and Pc
- Try another USB port.
- Install LG Drivers
- Try another USB cable.
lg flash tool required info cannot be found
Then Try to CSE flash. If not works,That’s mean, The Rom which you choose is not match with your phone try to find another one.
lg flash tool upgrade stopped due to an error
- Try another USB cable , Port and Drivers.
- Try to CSE flash.
- Download all Fresh Files again
lg flash tool 2014 has stopped working
- Download the wx.rar file
- extract it using above extracting software.
- Go to C:ProgramDataLGMOBILEAXPhone
- Now Paste wx.dll file in the phone folder
- Now try install again.
How to install Marshmallow, Lollipop
Yes you can. but you Have to Find the Stock or Custom Rom first then use above guide.
revert back to the previous version of Android
When you Flash new Custom Rom, If it is still testing one then you will definitely get errors.. Like GPS Camera fail, WIFI fail, NFC fails.. So, in this situation, You have to get previous version of android OS. you can use this post to go Back to kikat or Lollipop. go above one of Link and find previous version of android.
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2 thoughts on “Steps to flash LG stock Firmware (All models)”
i have LG v10 H900 but it has a korean board F600s now any flashtool wont let me flash my phone since the rom and boards are different. i can’t access recovery or hardware reset screen but i can go to download mode only. My ROM is H900 5.1.1 lollipop. and i am trying to flash H90021w_00_0921 and also i tried F600S30d_00_0510_2 they both give me required info not found error.
What can I do when this comes out?
error conection to server falied try again in a moment