Sprint crossflash to US unlocked pie

[EddiePR]

I did the crossflash of my lg v40 to the US unlocked pie V405UA20a very very simply without unlocking bootloader, root or some other step. Everything works great, my imei was not deleted, nor my serial number. just flash the kdz by installing lgup and ... can i help you to do the crossflash
Everything works perfect but there is no option for Wi-Fi calls? someone knows?

 

[conmonks]

Hello

I did the crossflash of my lg v40 to the US unlocked pie V405UA20a very very simply without unlocking bootloader, root or some other step. Everything works great, my imei was not deleted, nor my serial number. just flash the kdz by installing lgup and ... can i help you to do the crossflash
Everything works perfect but there is no option for Wi-Fi calls? someone knows?

So could you explain how you did the crossflash with the bootloader not being unlocked. I have LGUP installed and the US unlocked KDZ file. It failed for me.

Which guide did you use or if you care to explain the steps here. Thanks!

EDIT: Figured it out.

New question, are you able to put TWRP on your phone with current methods out there? if so, how?

 

[jimmyStoo]

Will OTA still work?

 

[EddiePR]

So could you explain how you did the crossflash with the bootloader not being unlocked. I have LGUP installed and the US unlocked KDZ file. It failed for me.

Which guide did you use or if you care to explain the steps here. Thanks!

EDIT: Figured it out.

New question, are you able to put TWRP on your phone with current methods out there? if so, how?

I have not tried TWRP. just the crossflash

 

[EddiePR]

Will OTA still work?

I can't confirm if the OTA works since there is no new version yet

 

[0x0null]

I can't confirm if the OTA works since there is no new version yet

Your device was unlocked before you Crossflashed?

 

[EddiePR]

Your device was unlocked before you Crossflashed?

no. flashing the US unlocked rom no sim unlocks. but it no longer shows the uicc unlock option in settings.

 

[sammibulin]

So could you explain how you did the crossflash with the bootloader not being unlocked. I have LGUP installed and the US unlocked KDZ file. It failed for me.

Which guide did you use or if you care to explain the steps here. Thanks!

EDIT: Figured it out.

New question, are you able to put TWRP on your phone with current methods out there? if so, how?

Do you mind sharing how you figured it out? I've tried doing this with my Sprint unlocked device but I have had no success so far. Device isn't recognized despite downloading LG Mobile Drivers.

 

[EddiePR]

Do you mind sharing how you figured it out? I've tried doing this with my Sprint unlocked device but I have had no success so far. Device isn't recognized despite downloading LG Mobile Drivers.

Yes. I'm not very good in English and I do not know how to create a guide here in XDA. But give me a chance and I'll try

 

[EddiePR]

[Guide]

I am not responsible if something goes wrong.
everything works perfect with total comptability, but I can't confirm if fastboot can be accessed after crossflash. Also, there is no option of wifi calling or calling plus, I cannot confirm OTA, because I installed android pie and it is the latest version for US unlocked. ***Maybe if you install the latest android 8 oreo before ,then you can test if ota works***
Downloads:
files: https://drive.google.com/open?id=1b-ZK3pN2ph7JvG6n4sDyXHxGLT53IfvE
firmware: https://lg-firmwares.com/lg-lmv405qa-firmwares/#tab=firmwares
*rename the firmware file to pie.kdz and put in desktop*

install lg usb drivers (be sure your device can adb. enable usb debugging, open command and put adb devices. check notification on the device and hit always. also Switch between all USB connection modes from the mobile so that Windows installs all the drivers
install lg up
Put LGUP_command.dll it into the folder: C:\Program Files (x86)\LG Electronics\LGUP\model\common ( if there is no common folder, create one and put the file there )
now...
put device in download mode
power off device
connect usb cable to pc, but not the phone
Hold and keep phone volume up
Plug your USB Cable to your phone while holding volume up, already in download mode, release volume up button
now go to device manager an check in ports/lge the value number for example com3, save it
Then go back to C:\Program Files (x86)\LG Electronics\LGUP
Hold the shift key and right click on a free space.
Choose to open a command prompt or PowerShell in Windows 10
After oppening it, type cmd and hit enter.
now you need to put this

lgup_cmd.exe com3 “C:\Program Files (x86)\LG Electronics\LGUP\model\common\LGUP_Common.dll” “C:\Users\your desktop username\Desktop\pie.kdz

and hit enter, but need to change the com number value. for example mine was com3. if yours is com2, com5 or another just change the number.
and that is. if you do it right then it will start flashing and you will see the progress on the mobile and the powershell

 

[oscarillo]

I have an Lg V40 sprint unlocked, would I lose the unlock if I try this?

 

[EddiePR]

I have an Lg V40 sprint unlocked, would I lose the unlock if I try this?

Certainly not, but I can't confirm it

 

[oscarillo]

Certainly not, but I can't confirm it

It did work!
Still unlocked
Thanks

 

[EddiePR]

It did work!
Still unlocked
Thanks

Very nice

 

[EddiePR]

Will OTA still work?

I did cross flash to verizon frirmware and the OTA works. So, i hope US unlocked too

 

[gtuxyco]

i have a us cellular variant, can I convert to the us unlock with this trick?

 

[EddiePR]

i have a us cellular variant, can I convert to the us unlock with this trick?

I don't know, but I'm almost sure you can

 

[brigantti]

I did the crossflash of my lg v40 to the US unlocked pie V405UA20a very very simply without unlocking bootloader, root or some other step. Everything works great, my imei was not deleted, nor my serial number. just flash the kdz by installing lgup and ... can i help you to do the crossflash
Everything works perfect but there is no option for Wi-Fi calls? someone knows?

This crossflah works for the att variant too?

 

[samuel6827]

Would this factory reset data ?

 

[EddiePR]

This crossflah works for the att variant too?

Not sure