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Downgrading LG G4 F500L from Nougat to LP or MM

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sushant_

Senior Member
Jun 26, 2016
463
740
25
New Delhi
I want to unlock my LG 500L(I guess everyone wants that right :p) which is updated to nougat.
I tried to downgrading using the F500l20u kdz from lg firmware using LGUP but it failed at 11%.
Replaced the .dll file , still no luck.
Tried to go back to LP using the tot but it failed giving the unknown command error.
So if anyone of you who want to support the unlocking of LG g4 F500L with nougat can give me suggestions on how to go back to MM in order to flash the USU.
Flashing back the Nougat kdz works fine though.
 
Last edited:

steadfasterX

Recognized Developer
Nov 13, 2013
5,866
15,142
127.0.0.1
OnePlus 7T Pro
I want to unlock my LG 500L(I guess everyone wants that right :p) which is updated to nougat.
I tried to downgrading using the F500l20u kdz from lg firmware using LGUP but it failed at 11%.
Replaced the .dll file , still no luck.
Tried to go back to LP using the tot but it failed giving the unknown command error.
So if anyone of you who want to support the unlocking of LG g4 F500L with nougat can give me suggestions on how to go back to MM in order to flash the USU.
Flashing back the Nougat kdz works fine though.

Pls provide the exact way:

You replaced the dll: which do you use? Share the link. How did you replaced it? Write the file path you used.
You tried to go back to LP: which one? Share the link.

If you used the right dll you need to flash a MM based ROM first afaik.

what lgup version do you use? Shown at the bottom when started. Should be 0.0.4.0

I would recommend to change the title to something better explaining what you need (downgrade a f500 from N to LP).



Sent from my LG-H815 using XDA Labs
 
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sushant_

Senior Member
Jun 26, 2016
463
740
25
New Delhi
I used the LPUp with dll version 0.4.0
I download the LP tot from this thread:
https://forum.xda-developers.com/g4/general/tot-lg-g4-korean-f500l-tot-flash-files-t3294417
I downloaded the kdz of LP and MM from here
https://lg-firmwares.com/lg-f500l-firmwares/
I followed the LP up refurbish option.
I tried the .dz file extraction and installation using the LPUP, still it gives the command unknown at 11%.
I used the latest .dll file from this thread:
https://forum.xda-developers.com/g4/help/lg-g4-lastest-version-lgup-dll-file-t3586220
 
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steadfasterX

Recognized Developer
Nov 13, 2013
5,866
15,142
127.0.0.1
OnePlus 7T Pro
You better had posted in help forum instead of here. Report your own thread (button beyond your post) and ask for thread move to help section... Just a suggestion..


Besides that:
Have you tried that https://forum.xda-developers.com/g4...rying-to-flash-kdz-lgup-t3666486/post73642302

Yea I know it's for the h815 but it's known that cross flashing between f500 and h815 is no problem an if that works well then you go UsU anyways ;)
Ah and yes you have to hexedit the kdz to make it flash on yours.



Sent from my LG-H815 using XDA Labs
 
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Root_newvie

Member
Jul 14, 2020
20
2
You better had posted in help forum instead of here. Report your own thread (button beyond your post) and ask for thread move to help section... Just a suggestion..


Besides that:
Have you tried that https://forum.xda-developers.com/g4...rying-to-flash-kdz-lgup-t3666486/post73642302

Yea I know it's for the h815 but it's known that cross flashing between f500 and h815 is no problem an if that works well then you go UsU anyways ;)
Ah and yes you have to hexedit the kdz to make it flash on yours.



Sent from my LG-H815 using XDA Labs
How can I hexedit the kdz file? I don't know exactly which part I should change.
 

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    I want to unlock my LG 500L(I guess everyone wants that right :p) which is updated to nougat.
    I tried to downgrading using the F500l20u kdz from lg firmware using LGUP but it failed at 11%.
    Replaced the .dll file , still no luck.
    Tried to go back to LP using the tot but it failed giving the unknown command error.
    So if anyone of you who want to support the unlocking of LG g4 F500L with nougat can give me suggestions on how to go back to MM in order to flash the USU.
    Flashing back the Nougat kdz works fine though.

    Pls provide the exact way:

    You replaced the dll: which do you use? Share the link. How did you replaced it? Write the file path you used.
    You tried to go back to LP: which one? Share the link.

    If you used the right dll you need to flash a MM based ROM first afaik.

    what lgup version do you use? Shown at the bottom when started. Should be 0.0.4.0

    I would recommend to change the title to something better explaining what you need (downgrade a f500 from N to LP).



    Sent from my LG-H815 using XDA Labs
    1
    I used the LPUp with dll version 0.4.0
    I download the LP tot from this thread:
    https://forum.xda-developers.com/g4/general/tot-lg-g4-korean-f500l-tot-flash-files-t3294417
    I downloaded the kdz of LP and MM from here
    https://lg-firmwares.com/lg-f500l-firmwares/
    I followed the LP up refurbish option.
    I tried the .dz file extraction and installation using the LPUP, still it gives the command unknown at 11%.
    I used the latest .dll file from this thread:
    https://forum.xda-developers.com/g4/help/lg-g4-lastest-version-lgup-dll-file-t3586220
    1
    You better had posted in help forum instead of here. Report your own thread (button beyond your post) and ask for thread move to help section... Just a suggestion..


    Besides that:
    Have you tried that https://forum.xda-developers.com/g4...rying-to-flash-kdz-lgup-t3666486/post73642302

    Yea I know it's for the h815 but it's known that cross flashing between f500 and h815 is no problem an if that works well then you go UsU anyways ;)
    Ah and yes you have to hexedit the kdz to make it flash on yours.



    Sent from my LG-H815 using XDA Labs