[GUIDE] Unlock your LG V40 via 9008 mode (Every Variant except T-Mobile)

[AsItLies]

Oh my gosh, is there any way I can reverse back to that step? Sorry, I did not saw any information on how to back up those files on the 1st post until I came across another website.

Hmmm, no. Once you've overwritten a partition, if you didn't back it up, it's gone forever.

 

[El Quick]

Great Guide, I applied on a V405UA from Sprint and is OK.

Is there any way to carrier unlock this same model?

 

[newonsh]

Hi all. I'm hoping someone is still listening. I know it's an old thread but I'm a die hard V series fan. When i finally smashed the screen on my V30 i picked up a used V40 on ebay about a month ago. My v30 was the Canadian version which was pretty locked down. I've traditionally put custom ROMs on my phones so I was keen to get a US version of the V40 (it wasn't sold in Canada anyway). I have the Sprint V405UA.

Here's my issue. I went through this guide and everything worked fine until I entered Fastboot mode and tried "fastbook oem unlock". I had fastboot/adb installed system wide and a fastboot terminal shortcut on my desktop with OEM Unlock and USB debugging enabled. I entered the unlock command and it did nothing, just said "waiting for any device". After a couple mins I closed the terminal and opened it again and tried "fastboot devices", nothing, then "adb devices" and the phone rebooted to a secure startup screen asking for a PIN. I tried my usuals but they didn't work. I assume because it was a used phone and probably someone else's PIN. I hard reset with the buttons (volume +, power) and it booted up normally. I went though the process again, 9008, flash v35 eng over abl_a, Qfil confirmed "send image", but I simply cannot enter fastboot mode anymore. I tried holding volume -, power until the disconnect sound and letting go of power, I tried plugging in the cable while holding volume -. It always boots up normally. I've switched between USB 3 and USB 2 ports, nothing. The last thing I did was erase laf_a and laf_b and repeated flashing v35 eng and it still won't boot to fastboot, just boots into the OS normally. Oh and I'm on Android 9. The only difference is there is no Sprint load animation on power up or down anymore.

Am I missing something? I'd love to get Lineage or something on this as I've had lots of bugs with the bloated LG junk. But I'm at a loss right now. Thanks in advance for any advice.

 

[AsItLies]

Hi all. I'm hoping someone is still listening. I know it's an old thread but I'm a die hard V series fan. When i finally smashed the screen on my V30 i picked up a used V40 on ebay about a month ago. My v30 was the Canadian version which was pretty locked down. I've traditionally put custom ROMs on my phones so I was keen to get a US version of the V40 (it wasn't sold in Canada anyway). I have the Sprint V405UA.

Here's my issue. I went through this guide and everything worked fine until I entered Fastboot mode and tried "fastbook oem unlock". I had fastboot/adb installed system wide and a fastboot terminal shortcut on my desktop with OEM Unlock and USB debugging enabled. I entered the unlock command and it did nothing, just said "waiting for any device". After a couple mins I closed the terminal and opened it again and tried "fastboot devices", nothing, then "adb devices" and the phone rebooted to a secure startup screen asking for a PIN. I tried my usuals but they didn't work. I assume because it was a used phone and probably someone else's PIN. I hard reset with the buttons (volume +, power) and it booted up normally. I went though the process again, 9008, flash v35 eng over abl_a, Qfil confirmed "send image", but I simply cannot enter fastboot mode anymore. I tried holding volume -, power until the disconnect sound and letting go of power, I tried plugging in the cable while holding volume -. It always boots up normally. I've switched between USB 3 and USB 2 ports, nothing. The last thing I did was erase laf_a and laf_b and repeated flashing v35 eng and it still won't boot to fastboot, just boots into the OS normally. Oh and I'm on Android 9. The only difference is there is no Sprint load animation on power up or down anymore.

Am I missing something? I'd love to get Lineage or something on this as I've had lots of bugs with the bloated LG junk. But I'm at a loss right now. Thanks in advance for any advice.

Sounds like you've been able to get the phone into fastboot mode, and it said fastboot on the phone screen?

Assuming that's the case, then it's a windows problem. Look in device manager and you'll see an entry with an '!' mark next to it, it will usually say 'Android'. Right click it and load your LG usb driver for ADB for it and then it will recognize the device.

Be aware though, there are no custom roms you can put on and still have functioning VOlte and VOwifi. LG uses a proprietary IMS stack, thus when you lose stock, you lose the ability for VOlte also.

cheers

 

[Jitteryheart87]

@con_ritmo wrote

Hello!

I just purchased a v40 and would like to unlock the bootloader/twrp/magisk it.
My v40 is att v405ua30c on android 10. So i figure it's 10c?

I noticed that you mentioned in the v40 unlock thread that you need a specific bootloader for android 10...and provided a link to download 10e injected with twrp.

Where would I be able to find a 10c bootloader injected with twrp?

Thank you for any help you can provide!

Regards

So, the naming conventions LG uses can be a bit confusing, but android 8 was v405ua10x, and android 9 is v405ua20x and android 10 is v405ua30x. The 'x' signifies updates, which are usually just security patches.

your v40 is att v405ua, the 30c indicates the OS version. That's the boot partition with twrp that you want, the one for att 30c.

this is the link to that one, att 30c.

cheersdo you have that one for the verizon phone??

 

[Jitteryheart87]

@con_ritmo wrote

Hello!

I just purchased a v40 and would like to unlock the bootloader/twrp/magisk it.
My v40 is att v405ua30c on android 10. So i figure it's 10c?

I noticed that you mentioned in the v40 unlock thread that you need a specific bootloader for android 10...and provided a link to download 10e injected with twrp.

Where would I be able to find a 10c bootloader injected with twrp?

Thank you for any help you can provide!

Regards

So, the naming conventions LG uses can be a bit confusing, but android 8 was v405ua10x, and android 9 is v405ua20x and android 10 is v405ua30x. The 'x' signifies updates, which are usually just security patches.

your v40 is att v405ua, the 30c indicates the OS version. That's the boot partition with twrp that you want, the one for att 30c.

this is the link to that one, att 30c.

cheers

mine is the verizon one, My v40 is
V405UA30c_00_VZW_US_OP_0814.kdz
v405ua30c on android 10 but i dont have OEM unlock anywhere in the developer options?? how do i fix this? anyone?

 

[AsItLies]

mine is the verizon one, My v40 is
V405UA30c_00_VZW_US_OP_0814.kdz
v405ua30c on android 10 but i dont have OEM unlock anywhere in the developer options?? how do i fix this? anyone?

It says how to in the very first post. Look for where it talks about FRP.

 

[Jitteryheart87]

It says how to in the very first post. Look for where it talks about FRP.

ok so i unlocked the bootloader but now even though im on android 10 its a bit weird because some of my apps like netflix are not compatible and im unable to download?
also how do i twrp/magisk this thing now? sorry im really new to this its my first time so i apolegize if im a bit slow here

 

[teeboz]

Since unlocking and rooting i am unable to get into fastboot mode. When i use abd command it reboots normal.

 

[AsItLies]

Since unlocking and rooting i am unable to get into fastboot mode. When i use abd command it reboots normal.

So it may be the directions don't necessarily make it clear, but, there are 2 ways you can get fastboot on the v40, which doesn't normally come with it. One is to use the engineering abl, which you did, when unlocking the BL.

But, that engineering abl is for Oreo, or rather, it's Oreo based, so it won't boot the device (most times) unless you're running Oreo. That's why the directions tell you to flash back your original abl, so the device can boot. Now do you see why you no longer have fastboot? You removed the engineering abl, obviously.

The second way to get (a watered down version of) fastboot is to erase the laf partition. What the rom does, when you try to go to LGUP (which is the laf partition), because there's nothing there, it will go to a watered down version of fastboot. It's kind of worthless though, as most rom variants only give you a version that can't flash a partition, certainly can't lock / unlock the BL, etc.

There are numerous ways to 'work around' this issue, the directions only mention the erase laf. But if you put your original abl back, which you should do so it can boot, that's why you don't have fastboot any longer.

 

[teeboz]

So it may be the directions don't necessarily make it clear, but, there are 2 ways you can get fastboot on the v40, which doesn't normally come with it. One is to use the engineering abl, which you did, when unlocking the BL.

But, that engineering abl is for Oreo, or rather, it's Oreo based, so it won't boot the device (most times) unless you're running Oreo. That's why the directions tell you to flash back your original abl, so the device can boot. Now do you see why you no longer have fastboot? You removed the engineering abl, obviously.

The second way to get (a watered down version of) fastboot is to erase the laf partition. What the rom does, when you try to go to LGUP (which is the laf partition), because there's nothing there, it will go to a watered down version of fastboot. It's kind of worthless though, as most rom variants only give you a version that can't flash a partition, certainly can't lock / unlock the BL, etc.

There are numerous ways to 'work around' this issue, the directions only mention the erase laf. But if you put your original abl back, which you should do so it can boot, that's why you don't have fastboot any longer.

thank you for this explanation. i no longer see abl_a in qfil but do have a backup of it.

 

[RedBux]

Dear Mr. Xsavi

I am using Lenovo Z6 Pro with 8GB Ram + 128 ROM + SD 855 which I bought in early 2019 being using ROW 11.0.405. This ROW Roms' which has NO Further development. Which was stop years ago.

Since this model having 3rd party developments recently (about two weeks) I requested Lenovo for bootloader unlock key @ https://www.zui.com/iunlock.

Till this date NO respond at all. I wrote to lenovo customer service pertaining the above issue still NO respond at all.

I wrote this "cos I would like you Mr. Xsavi ( or friend of yours ) whom having knowledge to produce somthing that enable me to Unlock my Bootloader

Thanking you in advance
Thanks
Regards

 

[AsItLies]

Dear Mr. Xsavi

I am using Lenovo Z6 Pro with 8GB Ram + 128 ROM + SD 855 which I bought in early 2019 being using ROW 11.0.405. This ROW Roms' which has NO Further development. Which was stop years ago.

Since this model having 3rd party developments recently (about two weeks) I requested Lenovo for bootloader unlock key @ https://www.zui.com/iunlock.

Till this date NO respond at all. I wrote to lenovo customer service pertaining the above issue still NO respond at all.

I wrote this "cos I would like you Mr. Xsavi ( or friend of yours ) whom having knowledge to produce somthing that enable me to Unlock my Bootloader

Thanking you in advance
Thanks
Regards

The reasons this guide works, to unlock the bootloader, are because of the availability of two specific files for this device:

1) The Engineering ABL specifically for this device. It doesn't work on other devices.
2) The programmers firehose, again, specifically for this device. It is a signed file, specific, so that qfil has access to the device.

Does your phone have these specific files for your device? No? Then there is no amount of writing a guide for you, because the guide won't work.

It's not a matter of simply 'writing a guide', you have to have the files.

You would be much better off finding the forums for your device, look for threads about how to get the BL unlock code, it may be they've just stopped making it available? I've no idea.

But Xsavi can't help you,, no one here can help you.

 

[saiankun]

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot flash frp path/to/frp
error: cannot load 'path/to/frp': No such file or directory

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot flash abl_a path/to/ablpiestock.img
error: cannot load 'path/to/ablpiestock.img': No such file or directory
help

 

[AsItLies]

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot flash frp path/to/frp
error: cannot load 'path/to/frp': No such file or directory

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot flash abl_a path/to/ablpiestock.img
error: cannot load 'path/to/ablpiestock.img': No such file or directory
help

When the guide says 'path/to/ablpiestock.img' it's a generic path, not the actual path you type in.

what you type in would be **your** path, on your computer, to where you put your abl backup.

 

[saiankun]

thanks already unlocked now you can tell me a rom and the tutorial v405ua verizom variant.

 

[soupgoblin]

old thread, I know, but if anyone could help me it'd be much appreciated. the Programmer Path is greyed out for me. I've tried restarting the phone and installing three different versions of QPST, none of them work. I have the driver installed. please help so I can get this phone rooted!

edit: for some reason, it requires a contents.xml file. I created a blank contents.xml file and it opened up the Programmer Path. does anyone know where I can get that?

 

[saiankun]

old thread, I know, but if anyone could help me it'd be much appreciated. the Programmer Path is greyed out for me. I've tried restarting the phone and installing three different versions of QPST, none of them work. I have the driver installed. please help so I can get this phone rooted!

edit: for some reason, it requires a contents.xml file. I created a blank contents.xml file and it opened up the Programmer Path. does anyone know where I can get that?

Select Flat build