[GUIDE] LGUP for all (no root needed)

[Ainz_Ooal_Gown]

Greetings everyone, i go by the name Ainz Ooal Gown. Here i bring you the Official Guide on LGUP to fix a Brick of your device or to simply Cross flash/Upgrade your device from Windows.

First things first if you try this and end up with a brick or your device transforms and tries to take over the world; it's not my fault you messed up not me. So just read all of this thread not just the O.P to, and get out of a bind if you reply with "the thread is too long i wont read it please help" don't expect anything short of "there's a search bar use it"

Second things have changed cross flashing no longer unlocks your Sim capabilities, you must contact your Carrier to have your Sim unlocked. The only other thing you can do is buy the US Unlocked model and root that one.

Third and i can't believe i must add this those of you who have a T-Mobile V40 if you flash a T-Mobile KDZ you'll be fine....if you flash any other KDZ enjoy and expensive Paper weight.

Download These FIles: DLL LGUP UI_Config

No root:

Step 1. Install the provided LGUP.msi (you should now have C:\Program Files (x86)\LG Electronics\LGUP)
Step 2. Install the provided DLL (you should now have C:\Program Files (x86)\LG Electronics\LGUP\model\Common)
Step 3. Extract the LGUP_UI_Config_m250n_[cxz].zip file anywhere on your computer, then copy or move the file to the common folder (the same one the DLL installs too)
Step 4. Enter download mode and flash any KDZ that is compatible with your device with the Refurbish or Upgrade options.

With root:

If you're rooted and BL unlocked, ALWAYS use Partition DL unless you want to go completely unrooted/bootloader relocked.
Download the previous files and LGUPCompatableLAF
Make sure your using fastboot with USB 2.0, it may work with 3.0 but it's better to use 2.0
Step 1. Extract the LGUPCompatibleLAF.rar file anywhere on your computer.
Step 2. Put your phone in fastboot mode. If on Oreo, just power off and hold vol down while plugged in, if on PIE Power off press vol up, while plugged in.
Step 3. In Windows 10 right click the start button and choose either "Command Prompt" or "Command Prompt(Admin)"
Step 4. In the command prompt type cd followed by where you extracted the rar for me it's "cd C:\Users\juanj\Downloads\Flash\LGUPCompatableLAF" ( Windows 7 and older simply when in the extracted folder Hold Shift on your keyboard and right click and choose "open a command prompt here" ).
Step 5. We need to get into the V35 Engineering bootloader, run this command: fastboot.exe set_active b and press enter. (If your on Oreo and have V35 bootloader in Slot_a skip this step.)
Step 6. Reboot, and it should boot straight into the v35 eng if you were already on PIE.
Step 7. Run this command to flash the LGUP Compatible LAF: fastboot.exe flash laf_a laf.img press enter.
Step 8. Now, we need to get back to our A slot, run: fastboot.exe set_active a (again Skip if your already on Oreo with V35Bootloader in Slot_a).
Step 9. Reboot by pressing and holding vol down and power while your device is plugged in (let go of the power button and volume down button and now press and hold vol up before the LG Logo shows up). You should be in download mode and LGUP will work.
Step 10. follow the non root part but use Partition DL, Select all and uncheck abl_a and laf_a to keep the bootloader unlocked in Slot_a then abl_b and laf_b to keep V35 Fastboot access in Slot_b.

Thanks to: @CXZa @maxmotos @Xsavi

 

[taronhov]

"UI_Config.lgl" file for V40

Hello All,

Please find attached an archive containing the "UI_Config.lgl" file for V40 retrieved and modified based on instructions from @CXZa ( @CXZa, thanks a lot for the great job done!).
Instructions:
***
1. Copy the "UI_Config.lgl" file into "*\LGUP\Common" folder
2. Change the file's properties and make it "Read-only" (should already be there)
3. Ignore the "can't open new file" warning by LGUP 1.16
***

Hope this help!

 

[Ainz_Ooal_Gown]

Hello All,

Please find attached an archive containing the "UI_Config.lgl" file for V40 retrieved and modified based on instructions from @CXZa ( @CXZa, thanks a lot for the great job done!).
Instructions:
***
1. Copy the "UI_Config.lgl" file into "*\LGUP\Common" folder
2. Change the file's properties and make it "Read-only" (should already be there)
3. Ignore the "can't open new file" warning by LGUP 1.16
***

Hope this help!

I will add this bit to the OP.....

 

[T3R4BYTE]

Works perfectly!

 

[Ainz_Ooal_Gown]

Works perfectly!

Just so others know were you rooted before this?

 

[T3R4BYTE]

Just so others know were you rooted before this?

yes, bl unlocked also :good:

 

[Alibaba0101]

Thanks for posting this. Can we use this to flash any v405 rom (except tmobile) to any lg v405 v40 phone without 9008 mode?

Can we not flash twrp to recovery for the lg v40 as opposed to using the laf partition? I got a copy of twrp.img from vlad for the v40 which looks like was created by Precious Princewill. I haven't tried it yet. Frankly want to make sure there is a working lg up in case i lose recovery. Also not sure how twrp works with PIE. Does it allow you to flash to both slot a or slot b?

 

[neocyke]

Posts like this sometimes makes me wish I didn't get bl unlocked and root.. So much simpler. With lack of anything really interesting to test and play with like crossflashing on the V30 for example, I can't find the motivation to actually do any of this..

 

[Ainz_Ooal_Gown]

Posts like this sometimes makes me wish I didn't get bl unlocked and root.. So much simpler. With lack of anything really interesting to test and play with like crossflashing on the V30 for example, I can't find the motivation to actually do any of this..

if you have TWRP installed i'm currently uploading a Backup with No data of a GSI i have working on the V40

 

[Ainz_Ooal_Gown]

Thanks for posting this. Can we use this to flash any v405 rom (except tmobile) to any lg v405 v40 phone without 9008 mode?

Can we not flash twrp to recovery for the lg v40 as opposed to using the laf partition? I got a copy of twrp.img from vlad for the v40 which looks like was created by Precious Princewill. I haven't tried it yet. Frankly want to make sure there is a working lg up in case i lose recovery. Also not sure how twrp works with PIE. Does it allow you to flash to both slot a or slot b?

TWRP lets you Flash on the current active Slot, But the current Lineage OS we're working on flashes to the non active Slot for some reason.

 

[Alibaba0101]

TWRP lets you Flash on the current active Slot, But the current Lineage OS we're working on flashes to the non active Slot for some reason.

ThanksQ
Does the current twrp allow backup and restore of the active slot? And how can i tell which is the active slot? Is there a different recovery for each slot? I haven't even looked at what the partition scheme looks like with pie yet.

 

[Ainz_Ooal_Gown]

ThanksQ
Does the current twrp allow backup and restore of the active slot? And how can i tell which is the active slot? Is there a different recovery for each slot? I haven't even looked at what the partition scheme looks like with pie yet.

yes you can have the older TWRP 3.3.0-0 in one slot and the newer TWRP 3.3.1-0 in the other but you can check your active slot in the reboot section of TWRP

 

[neocyke]

if you have TWRP installed i'm currently uploading a Backup with No data of a GSI i have working on the V40

You know what, I never actually checked whether mine came with TWRP or not (again lack of stuff to flash). Prolly worth a look see.
GSI huh. Would be great if it'd work properly. My local carrier uses bands that US phones don't enable / use which is why all my LG phones run Korean fw. Those are the only ones that play nice, otherwise it's wifi-only-land fer me.

This is one peculiar thing I've noticed with LG phones so far. Even if the phone hw itself supports every single band under the sun (like me old V30), running certain regional fw disables some of them. Specific to the V30 : Logic dictates that you can go into service mode and enable those and alls good yeah? But no, not with LG. You do that, it then locks you onto those bands never auto-switching anymore. Which sucks when you swap sims or roam on other networks. Like.. dude.. WTH??

 

[suderujn]

Successfully crossflashed at&t 8.1 into Korean 9.0. Thanks!

 

[Inerent]

Successfully crossflashed at&t 8.1 into Korean 9.0. Thanks!

Hello, did you do refurbished?

 

[suderujn]

Hello, did you do refurbished?

yep

 

[Alibaba0101]

You know what, I never actually checked whether mine came with TWRP or not (again lack of stuff to flash). Prolly worth a look see.
GSI huh. Would be great if it'd work properly. My local carrier uses bands that US phones don't enable / use which is why all my LG phones run Korean fw. Those are the only ones that play nice, otherwise it's wifi-only-land fer me.

This is one peculiar thing I've noticed with LG phones so far. Even if the phone hw itself supports every single band under the sun (like me old V30), running certain regional fw disables some of them. Specific to the V30 : Logic dictates that you can go into service mode and enable those and alls good yeah? But no, not with LG. You do that, it then locks you onto those bands never auto-switching anymore. Which sucks when you swap sims or roam on other networks. Like.. dude.. WTH??

This has been true of almost every manufacturer now. There are no truly unlocked world phones, at least not in the US. Each firmware is locked to the bands for that carrier with little to no ability to cross flash the radios or enable bands. I have at&t in the USA and they have some sort of deal with most carriers that don't allow their firmware to be posted and their phones are all bootloader locked. You can cross flash them and get the bootloader unlocked, but you will always lose a few bands.

The LG v40 US unlocked firmware appears to have more bands than most (v405qa) which is what i cross flashed to my lg v40. It supports:
LTE Bands: 1/2/3/4/5/7/8/12/13/14/17/20/25/26/28/29/30/38/39/40/41/46/66/71;
WCDMA Bands 1/2/4/5/8;
GSM 850/900/1800/1900 MHz; 800 MHz
CDMA; 1.9 GHz CDMA PCS; Secondary 800 MHz CDMA
https://www.lg.com/us/cell-phones/lg-V405QA7-unlocked-v40

Although after cross flashing this rom, my phone firmware still show v405ua model#. So I'm not sure that it fully has worked or if the v405qa is just a varation of the v405ua rom.

 

[Ainz_Ooal_Gown]

This has been true of almost every manufacturer now. There are no truly unlocked world phones, at least not in the US. Each firmware is locked to the bands for that carrier with little to no ability to cross flash the radios or enable bands. I have at&t in the USA and they have some sort of deal with most carriers that don't allow their firmware to be posted and their phones are all bootloader locked. You can cross flash them and get the bootloader unlocked, but you will always lose a few bands.

The LG v40 US unlocked firmware appears to have more bands than most (v405qa) which is what i cross flashed to my lg v40. It supports:
LTE Bands: 1/2/3/4/5/7/8/12/13/14/17/20/25/26/28/29/30/38/39/40/41/46/66/71;
WCDMA Bands 1/2/4/5/8;
GSM 850/900/1800/1900 MHz; 800 MHz
CDMA; 1.9 GHz CDMA PCS; Secondary 800 MHz CDMA
https://www.lg.com/us/cell-phones/lg-V405QA7-unlocked-v40

Although after cross flashing this rom, my phone firmware still show v405ua model#. So I'm not sure that it fully has worked or if the v405qa is just a varation of the v405ua rom.

It will always show your base model

 

[Alibaba0101]

It will always show your base model

Is this different than the v30 then? After cross flashing us998 on my sprint v30, it now shows us998 as the model#.

 

[Ainz_Ooal_Gown]

Is this different than the v30 then? After cross flashing us998 on my sprint v30, it now shows us998 as the model#.

Sorry serial number should always be the same but flashing US Unlocked KDZ which is a V405QA doesn't change the Sprint V405UA to a QA....i forget if it was different on the V30 or not