Develop Bugs

ROOT TO STOCK instructions request

Hey guys,
Curious if anyone will spend the time to create a detailed step by step guide for all the people out there who have rooted and flashed roms to understand how to go back to complete stock with the ability to take OTA updates again. I have seen many people ask for this on the forums and have yet to see the same type of guide as seen on other samsung galaxy note mobile device threads on XDA. If I had the understanding to do this I would, but I do not want to steer people wrong. Thanks for whoever takes the time to post this info.
Please include US stock firmware link or file to download for flashing through ODIN!

Dedline said:
Hey guys,
Curious if anyone will spend the time to create a detailed step by step guide for all the people out there who have rooted and flashed roms to understand how to go back to complete stock with the ability to take OTA updates again. I have seen many people ask for this on the forums and have yet to see the same type of guide as seen on other samsung galaxy note mobile device threads on XDA. If I had the understanding to do this I would, but I do not want to steer people wrong. Thanks for whoever takes the time to post this info.
Please include US stock firmware link or file to download for flashing through ODIN!
Click to expand...
Click to collapse
Try the instructions on the link below.
http://forum.xda-developers.com/showthread.php?t=2538464

vinayburman said:
Try the instructions on the link below.
http://forum.xda-developers.com/showthread.php?t=2538464
Click to expand...
Click to collapse
Decent instructions, I have done these things. The question I have not seen anyone answer is why on every samsung firmware site, there is no official United States firmware for this device to flash in ODIN. They are all other countries. I have flashed the UK one before and it did not boot up. Had to go back to root and a rom to get it working again. I just wanted to set this tablet back to stock for a service request then root it when I get it back.
Thanks for the help

Dedline said:
Decent instructions, I have done these things. The question I have not seen anyone answer is why on every samsung firmware site, there is no official United States firmware for this device to flash in ODIN. They are all other countries. I have flashed the UK one before and it did not boot up. Had to go back to root and a rom to get it working again. I just wanted to set this tablet back to stock for a service request then root it when I get it back.
Thanks for the help
Click to expand...
Click to collapse
Can anyone link or share a US sm-p600 wifi model official stock firmware? Plz

Dedline said:
Decent instructions, I have done these things. The question I have not seen anyone answer is why on every samsung firmware site, there is no official United States firmware for this device to flash in ODIN. They are all other countries. I have flashed the UK one before and it did not boot up. Had to go back to root and a rom to get it working again. I just wanted to set this tablet back to stock for a service request then root it when I get it back.
Thanks for the help
Click to expand...
Click to collapse
There is US firmware on every Samsung sites, just u dont know what country code to llok for and its XAR/Cellular South.
http://samsung-updates.com/region/?region=XAR

Dedline said:
Decent instructions, I have done these things. The question I have not seen anyone answer is why on every samsung firmware site, there is no official United States firmware for this device to flash in ODIN. They are all other countries. I have flashed the UK one before and it did not boot up. Had to go back to root and a rom to get it working again. I just wanted to set this tablet back to stock for a service request then root it when I get it back.
Thanks for the help
Click to expand...
Click to collapse
You can download from sammobile.com. Look for Cellular South - XAR under Product Code country.

dt33 said:
There is US firmware on every Samsung sites, just u dont know what country code to llok for and its XAR/Cellular South.
http://samsung-updates.com/region/?region=XAR
Click to expand...
Click to collapse
Thanks mate! It's funny how many other threads I found with people asking the same thing and no one ever clarified this. Thx again

I totally messed everything up (stuck with brick)

I am an idiot..
Long story short my LG-D852 RGS is showing as an LG-D857 in LG FlashTool and I am unable to flash the correct rom as I keep getting an error message:
"Download fail!! Device model is different"
I somehow flashed my D852 to a D857 while messing around, and now I can not find any way to recover to factory.
Anyone have any solutions that can rescue me from this bricked phone?! PLEASE

If you want some good help to recover your phone go to this thread and ask for help or ask even if it is possible since you flashed the wrong ROM.
http://forum.xda-developers.com/showthread.php?t=2785089
The maintainer of this thread is a really nice guy and has helped thousands of people with these sort of problems.
Hope this helps you somehow.

droidbits said:
If you want some good help to recover your phone go to this thread and ask for help or ask even if it is possible since you flashed the wrong ROM.
http://forum.xda-developers.com/showthread.php?t=2785089
The maintainer of this thread is a really nice guy and has helped thousands of people with these sort of problems.
Hope this helps you somehow.
Click to expand...
Click to collapse
Only way you can fix it is probably kick it into Qualcomm USB Loader 9008 mode

itsbighead said:
Only way you can fix it is probably kick it into Qualcomm USB Loader 9008 mode
Click to expand...
Click to collapse
Yes I actually agree with that.
Here is the link to that thread which is actually closed but the OP of this thread here can have a good read and perhaps Google for the software to download.
http://forum.xda-developers.com/showthread.php?t=3072091

I actually fixed it using a modified .DLL file that bypassed the model mismatch so I used it with the stock bell 5.0.1 and LG flash tool and it finally worked

jetpackjeff said:
I actually fixed it using a modified .DLL file that bypassed the model mismatch so I used it with the stock bell 5.0.1 and LG flash tool and it finally worked
Click to expand...
Click to collapse
Very glad you got it sorted. Another success story!

I am confident this phone is basically unbrickable, much like other LG devices I've had in the past

Need help with bypassing bootloader unlock (EE) UK

Gone through the LG dev site, put in IMEI and Device ID, message pops up saying
the page at developer.lge.com says:
Unfortunately, your device (EE,UK) does not support unlocking the bootloader.
Is there a way around this, I would like to root my phone...and this whole "hold" over my android device isn't good at all.
EDIT, Sorry, i've got the LG G4 which is the phone in question, not the LG G3 as stated in my Sig.

CraigUK87 said:
Gone through the LG dev site, put in IMEI and Device ID, message pops up saying
the page at developer.lge.com says:
Unfortunately, your device (EE,UK) does not support unlocking the bootloader.
Is there a way around this, I would like to root my phone...and this whole "hold" over my android device isn't good at all.
EDIT, Sorry, i've got the LG G4 which is the phone in question, not the LG G3 as stated in my Sig.
Click to expand...
Click to collapse
I have the UK (EUR) version too from CPW on EE but was able to unlock. What's your software version under About Phone --> Software Info ?
Mine is V10c-EUR-XX

pcoulson said:
I have the UK (EUR) version too from CPW on EE but was able to unlock. What's your software version under About Phone --> Software Info ?
Mine is V10c-EUR-XX
Click to expand...
Click to collapse
Mine is V10B-234-30

It's official - there are a billion frickin versions of the LG G4 software out there and we don't stand a chance.
Sorry you can't unlock. Check the root thread for that.

pcoulson said:
It's official - there are a billion frickin versions of the LG G4 software out there and we don't stand a chance.
Sorry you can't unlock. Check the root thread for that.
Click to expand...
Click to collapse
Ouch... you serious?? nothing at all.. That's actually s**t.

Surely you'd be able to root using the method in the root thread? I'd hope so as I'm getting this phone on EE in a couple of weeks and was hoping it would be possible
Sent from my SM-N9005 using Tapatalk

CraigUK87 said:
Ouch... you serious?? nothing at all.. That's actually s**t.
Click to expand...
Click to collapse
sweeney_uk said:
Surely you'd be able to root using the method in the root thread? I'd hope so as I'm getting this phone on EE in a couple of weeks and was hoping it would be possible
Sent from my SM-N9005 using Tapatalk
Click to expand...
Click to collapse
Should be able to root using the method in the root thread with no issues.
As far as getting a G4 on EE, go via CarphoneWarehouse as you get a Euro unlocked device and not an EE branded device.

pcoulson said:
It's official - there are a billion frickin versions of the LG G4 software out there and we don't stand a chance.
Sorry you can't unlock. Check the root thread for that.
Click to expand...
Click to collapse
IIIIkoolaidIIII said:
Should be able to root using the method in the root thread with no issues.
As far as getting a G4 on EE, go via CarphoneWarehouse as you get a Euro unlocked device and not an EE branded device.
Click to expand...
Click to collapse
i think i got it a bit late... can't really take it back now and start again.
I've found a few rooting methods... but could someone point me in the right direction to the right thread, please =)

CraigUK87 said:
i think i got it a bit late... can't really take it back now and start again.
I've found a few rooting methods... but could someone point me in the right direction to the right thread, please =)
Click to expand...
Click to collapse
The low effort root method in G4 Original Android Development.
Do not try to absolve me by some quirk of quantum mechanics.

IIIIkoolaidIIII said:
Should be able to root using the method in the root thread with no issues.
As far as getting a G4 on EE, go via CarphoneWarehouse as you get a Euro unlocked device and not an EE branded device.
Click to expand...
Click to collapse
I would but I'm on a shared plan and CPW can't upgrade me so I'm stuck going to EE direct [emoji20]
Sent from my SM-N9005 using Tapatalk

sweeney_uk said:
I would but I'm on a shared plan and CPW can't upgrade me so I'm stuck going to EE direct [emoji20]
Sent from my SM-N9005 using Tapatalk
Click to expand...
Click to collapse
Dam that's a *****. I'm wondering if you could flash the KDZ of the EURO unlocked device and convert it from an EE device to an unlocked one. I know this used to be possible with Samsung device, this is my first LG (apart from a Nexus) so not fully up to speed on these things yet. May be worth investigating though.

IIIIkoolaidIIII said:
The low effort root method in G4 Original Android Development.
Do not try to absolve me by some quirk of quantum mechanics.
Click to expand...
Click to collapse
Ok found that,
right.... How on earth can I tell what version mine is?
does this low level root actually bypass the "not being able to unlock bootloader" ??
Sorry for all the questions, I have read up...just a bit cautious this time around.... never had this much trouble with rooting a device before.

CraigUK87 said:
Ok found that,
right.... How on earth can I tell what version mine is?
does this low level root actually bypass the "not being able to unlock bootloader" ??
Sorry for all the questions, I have read up...just a bit cautious this time around.... never had this much trouble with rooting a device before.
Click to expand...
Click to collapse
Yes it doesn't require the Bootloader being unlocked, tbh most questions you have will be answered in that forum, read through the first two posts. All images are there and how to find the right ones.

IIIIkoolaidIIII said:
Yes it doesn't require the Bootloader being unlocked, tbh most questions you have will be answered in that forum, read through the first two posts. All images are there and how to find the right ones.
Click to expand...
Click to collapse
Well, thank you my friend for the help...but as you can appreciate...it's an expensive phone, I'm safe guarding myself by asking people with more experience than myself. I'm sorry.

CraigUK87 said:
Well, thank you my friend for the help...but as you can appreciate...it's an expensive phone, I'm safe guarding myself by asking people with more experience than myself. I'm sorry.
Click to expand...
Click to collapse
If your worried about not picking the right version, then I would avoid proceeding with that method. As if it isn't one of the version in the OP, you need to change the commands too. Post a screenshot of your Software Info screen and I'll point you in the right direction.
But you need to read through both those posts before proceeding to understand what your doing.

IIIIkoolaidIIII said:
If your worried about not picking the right version, then I would avoid proceeding with that method. As if it isn't one of the version in the OP, you need to change the commands too. Post a screenshot of your Software Info screen and I'll point you in the right direction.
But you need to read through both those posts before proceeding to understand what your doing.
Click to expand...
Click to collapse
I've read through both posts a few times.. i have a feeling my version isn't there.

CraigUK87 said:
I've read through both posts a few times.. i have a feeling my version isn't there.
Click to expand...
Click to collapse
Can you post a screen of your hardware info to.

IIIIkoolaidIIII said:
Can you post a screen of your hardware info to.
Click to expand...
Click to collapse
Sure

CraigUK87 said:
I've read through both posts a few times.. i have a feeling my version isn't there.
Click to expand...
Click to collapse
As far as I can tell, you only have a carrier specific version of software and no actual hardware differences from H815 itself, which makes sense EE just using their own software (like the twats they are). This being the case you should be able to proceed with flashing the H815-10c image and gain root, this may also mean you can unlock the bootloader.
If the worst happens and you can't boot, you can just use a kdz image to revert to stock following the guide here:
http://forum.xda-developers.com/g4/general/guide-lg-g4-stock-firmware-to-stock-kdz-t3107848
You can gain a stock KDZ with this url, replace 'YOURIMEIHERE' with your imei number:
http://csmg.lgmobile.com:9002/csmg/b2c/client/auth_model_check2.jsp?esn=YOURIMEIHERE

IIIIkoolaidIIII said:
As far as I can tell, you only have a carrier specific version of software and no actual hardware differences from H815 itself, which makes sense EE just using their own software (like the twats they are). This being the case you should be able to proceed with flashing the H815-10c image and gain root, this may also mean you can unlock the bootloader.
If the worst happens and you can't boot, you can just use a kdz image to revert to stock following the guide here:
http://forum.xda-developers.com/g4/general/guide-lg-g4-stock-firmware-to-stock-kdz-t3107848
You can gain a stock KDZ with this url, replace 'YOURIMEIHERE' with your imei number:
http://csmg.lgmobile.com:9002/csmg/b2c/client/auth_model_check2.jsp?esn=YOURIMEIHERE
Click to expand...
Click to collapse
Well, thank you very much, sir. I really appreciate the help =) Shall try it out now... as for the bootloader...
LG specifically said on the dev site that my bootloader (EE)UK can't be unlocked,
I input my IMEI and Device-ID.. However, I expect you know way more than myself, So.. i'll stay in hope that you, sir..are right =)

Please help stuck at at&t boot logo. v495

Hello all. Please help me. I have a v495 with root replaced by su. all was fine till I was getting ready to install the TWRP recovery. I did not even install it but I did install flashify and twrp manager approving root access but never installed/flashed the revovery img. After installing twrp manager it asked for me to select a device but did not see the v495,496 or 498 so I just exited. I restarted the device and it just sat at the at&t boot logo. again I did not install anything other than flashify and twrp manager. Anyway I panicked and searched online to reset the device thinking I could just start over. I found the directions (hold power and vol down. release power hold vol up down and power). I was able to do factory reset but now its still stuck at the a&t logo and it won't shut off.
Is there anything else I can do?

It is against XDA forum rules to post the same question in multiple threads. Please don't do this in the future. I answered you in the other (first) thread you posted about this problem.

Hi, Sorry for the duplicate post I was not aware.. I thought we just couldn't create new threads with same topic.
Anyway thanks but the waiting did not help. I installed LG Bridge and trying to do software update but I keep getting LGE MTP driver failed install errors.. Holding the up and power buttons allowed me to shut the device off and enter charge only state. Wish there was a way to reload the stock rom but I have not found any software or roms as of yet.

SOL
unfortunately for any ATT customer it is the hardest to get any firmware for any of their devices. I dont know why they feel the need to make it proprietary. I had run into the same problem and I am not getting anywhere with it. There is chinese website that says it has the stock kdz file for it but you need 5 coins or some type of BS to even look at it.

Well this socks...
I guess my car tab project will have to wait till we get some dev support. Im surprised there are so few of us seeing how these things were practically being given away at one point.

Bryan858 said:
I guess my car tab project will have to wait till we get some dev support. Im surprised there are so few of us seeing how these things were practically being given away at one point.
Click to expand...
Click to collapse
Sorry I don't have any other ideas. I feel your pain. It's a similar situation with my VK810 but at least there has been some development and TWRP was updated thankfully, plus Verizon releases the firmware.

atxdave said:
unfortunately for any ATT customer it is the hardest to get any firmware for any of their devices. I dont know why they feel the need to make it proprietary. I had run into the same problem and I am not getting anywhere with it. There is chinese website that says it has the stock kdz file for it but you need 5 coins or some type of BS to even look at it.
Click to expand...
Click to collapse
Please could you link to the Chinese site for some of us who have no alternatives? If the site does really have the firmware I don't mind paying to get it, but be certain I will re-upload and link here. Thanks.

ezeuba said:
Please could you link to the Chinese site for some of us who have no alternatives? If the site does really have the firmware I don't mind paying to get it, but be certain I will re-upload and link here. Thanks.
Click to expand...
Click to collapse
Probably the same as for my device. http://www.lgbbs.com:41/thread-838-1-1.html. Not willing to pay for it since I don't need it, but if you need it bad enough I think it equates to 10 U.S. dollars last I checked. Note that the one I linked to is supposed to be the one for my device, the VK810.

roirraW "edor" ehT said:
Probably the same as for my device. http://www.lgbbs.com:41/thread-838-1-1.html. Not willing to pay for it since I don't need it, but if you need it bad enough I think it equates to 10 U.S. dollars last I checked. Note that the one I linked to is supposed to be the one for my device, the VK810.
Click to expand...
Click to collapse
Thanks for the link, but I didn't find my model's firmware there - V495 AT&T... I would willingly pay to download this firmware so I can fix my issue. I rooted mine, didn't like the Kingroot su manager and changed it to SuperSU with Supersume and the tab didn't boot again. It just hangs at the LG logo, or if I leave it for long it will show the AT&T logo and that's all. I wish I never messed with it. Just brand new off ebay.

ezeuba said:
Thanks for the link, but I didn't find my model's firmware there - V495 AT&T... I would willingly pay to download this firmware so I can fix my issue. I rooted mine, didn't like the Kingroot su manager and changed it to SuperSU with Supersume and the tab didn't boot again. It just hangs at the LG logo, or if I leave it for long it will show the AT&T logo and that's all. I wish I never messed with it. Just brand new off ebay.
Click to expand...
Click to collapse
Kick me if this is too obvious, but have you tried Googling:
Code:
V495 TOT
or
Code:
V495 KDZ
?
Although I might be wrong, but I think I heard that Sprint and AT&T don't provide KDZs for LG devices.
Is it still under LG's warranty? Do you have the IMEI/serial number for it that you can try to RMA it through LG? I got excellent warranty service for my model when I needed it. Don't tell them what you tried doing to it, though.

It gets worse... From really bad to terribly worse... I searched and searched and searched for the V495 KDZ to no avail, but I saw for V490 and V496. I downloaded both. I tried with V490 and it flashed and booted but touchscreen was not responsive. I guess due to not being for the exact same version. I tried the V496 which is the same model but the T-Mobile variant. The flashing went well until around 85% when the screen went blank and although the flashing completed, the screen never came up again, yet it makes a sound when connected to the laptop. So I went into Device Manager on my laptop to see how things were, and what it was seeing it as was HSUSB DQLoader 9008 or something like that. A hard brick!!! All because I tried to root this device... Some things are better left without messing around with them... However, if there's any help I would appreciate it very much; this is a new tab, still with the cover screen unremoved...

ezeuba said:
It gets worse... From really bad to terribly worse... I searched and searched and searched for the V495 KDZ to no avail, but I saw for V490 and V496. I downloaded both. I tried with V490 and it flashed and booted but touchscreen was not responsive. I guess due to not being for the exact same version. I tried the V496 which is the same model but the T-Mobile variant. The flashing went well until around 85% when the screen went blank and although the flashing completed, the screen never came up again, yet it makes a sound when connected to the laptop. So I went into Device Manager on my laptop to see how things were, and what it was seeing it as was HSUSB DQLoader 9008 or something like that. A hard brick!!! All because I tried to root this device... Some things are better left without messing around with them... However, if there's any help I would appreciate it very much; this is a new tab, still with the cover screen unremoved...
Click to expand...
Click to collapse
I'm really sorry to hear about that. That sucks. Unfortunately, recovering from QHBUSB BULK 9008 mode requires a TOT file, although I've wondered if it might also work with a KDZ, but in your case you can't find either so there's really no hope.
Are you going to see if it's under warranty with LG and try to RMA it?
I guess you know this now, but never, ever flash something that's made for a different model/variant, although in your case it didn't really hurt to try since either way you were bricked.
---------- Post added at 08:01 AM ---------- Previous post was at 07:54 AM ----------
@ezeuba, I did a variation of one of the previous searches I suggested. I Googled for:
Code:
at&t v495 tot
The second and third links look promising.

roirraW "edor" ehT said:
I'm really sorry to hear about that. That sucks. Unfortunately, recovering from QHBUSB BULK 9008 mode requires a TOT file, although I've wondered if it might also work with a KDZ, but in your case you can't find either so there's really no hope.
Are you going to see if it's under warranty with LG and try to RMA it?
I guess you know this now, but never, ever flash something that's made for a different model/variant, although in your case it didn't really hurt to try since either way you were bricked.
---------- Post added at 08:01 AM ---------- Previous post was at 07:54 AM ----------
@ezeuba, I did a variation of one of the previous searches I suggested. I Googled for:
Code:
at&t v495 tot
The second and third links look promising.
Click to expand...
Click to collapse
If only I could read Chinese... Google Translate doesn't work for that site... I wouldn't mind paying to download the file, if I could see how...

ezeuba said:
If only I could read Chinese... Google Translate doesn't work for that site... I wouldn't mind paying to download the file, if I could see how...
Click to expand...
Click to collapse
Although the "Translate this page" link next to each search result didn't work, it still translated fine for me after loading both pages the normal way.

If only there was a way to 'make' a tot file from another V495 tab's files... I got the second one now and have no intention of messing with it again. I only wonder if it were possible to 'create' a tot file one can use in unbricking the bricked one... Just a thought...

ezeuba said:
If only there was a way to 'make' a tot file from another V495 tab's files... I got the second one now and have no intention of messing with it again. I only wonder if it were possible to 'create' a tot file one can use in unbricking the bricked one... Just a thought...
Click to expand...
Click to collapse
I've wondered about the same - possibility to create KDZs and TOTs out of partition image files. After all, there are tools to extract both, so although possibly more difficult, theoretically it should be possible to create both. I have no knowledge that would help look into the possibility, however.
Did you pursue any further getting to that page? I can still get to it fine.

roirraW "edor" ehT said:
I've wondered about the same - possibility to create KDZs and TOTs out of partition image files. After all, there are tools to extract both, so although possibly more difficult, theoretically it should be possible to create both. I have no knowledge that would help look into the possibility, however.
Did you pursue any further getting to that page? I can still get to it fine.
Click to expand...
Click to collapse
Yea, I could get to that page but still cannot make out how to pay to download the KDZ. It would be great if any mandarin speakers could help us out...

ezeuba said:
Yea, I could get to that page but still cannot make out how to pay to download the KDZ. It would be great if any mandarin speakers could help us out...
Click to expand...
Click to collapse
Did you get it to translate by choosing to translate *after* loading the webpage? You should first register on the site in the upper right corner.
You probably have to buy credits using PayPal, then use those credits to buy the link to the TOT, lower on the page.

I need some help downgrading/rooting my LG G4.

Hello amigos, just to clarify i'm new to XDA so lets get to it then shall we!
So I bought this LG G4 from a guy on eBay, and it basically just arrived today. So the weird thing about the device is, It has a Anti-Rollback Version 4. Ive personally never seen this especially in the UK. Isn't it just the US that's supposed to be effected by these issues???
Is there any way of getting around this or what ever?
Its on Android 6.0 and its the H815 variant, I've tried booting into the boot-loader and that doesn't work (Yes I've used ADB but that didn't work either I also used recovery which for some reason I can access but not the boot-loader ) This is the main issue. There is also something else that doesn't make any sense. The device has an update from LG, It downloads perfectly fine but when it goes to flash the update it just doesn't flash. It comes up with an error. That's all it says in the recovery, error. Yeah that's about it really. The phone works perfectly fine on 6.0 but I just wanted to see if one of the greight minds here could assist me with this issue or just upfront call me stupid for wasting my money on an old phone :laugh:.

Which H815 variant is it?
EU, USA, TR, Int'l?

LPCG7 said:
Which H815 variant is it?
EU, USA, TR, Int'l?
Click to expand...
Click to collapse
It looks to be the EU version to me. I cant be too sure though. Its running on the OPEN EU firmware though. (H81520D)

go to:
settings > about phone > hardware info

LPCG7 said:
go to:
settings > about phone > hardware info
Click to expand...
Click to collapse
Yes the model number is LG-H815. It doesn't say if its EU or INT or what ever.
Is this unusual?

Sileo2056 said:
Yes the model number is LG-H815. It doesn't say if its EU or INT or what ever.
Is this unusual?
Click to expand...
Click to collapse
That's on the page below. There it gives you software version....

mcduffie2010 said:
That's on the page below. There it gives you software version....
Click to expand...
Click to collapse
H81520D is the software version

you need to unlock the bootloader before accessing it first.
this is the only official way for so.
http://developer.lge.com/resource/mobile/RetrieveBootloader.dev
If I may ask to better assist you, what do you plan on doing exactly?

LPCG7 said:
you need to unlock the bootloader before accessing it first.
this is the only official way for so.
http://developer.lge.com/resource/mobile/RetrieveBootloader.dev
If I may ask to better assist you, what do you plan on doing exactly?
Click to expand...
Click to collapse
Firstly I plan on rooting and adding TWRP as I did on my old G3. I tried to use LG's method but it did not allow me to fastboot. When I used ADB it just well, restarted the phone. I used the command adb restart bootloader as it states on the unlocking site. I used administrative permissions. Whats unsual is, I can use adb restart recovery perfectly fine to get to the stock recovery.

The confusing thing for me is, the device has the antirollback version 4
Its the EU version of the H815. It makes no sense!!!!
I'm trying to figure out what could have caused this to happen mainly... The only version with antirollback version 4 is the LS991 ZVF... How is this even been done to this thing!? Its running on the H81520D firmware which 0 of them have the antirollback version 4 that i'm aware of. The bootloader is mysteriously inaccessible by anything I do! This is really bugging me now. Could this be a franken device?

Before proceeding further, check whether your device has SN 404 or other. It is found by removing your battery or checking on the box labels.

LPCG7 said:
Before proceeding further, check whether your device has SN 404 or other. It is found by removing your battery or checking on the box labels.
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Nope it's sn 606....

Sileo2056 said:
Firstly I plan on rooting and adding TWRP as I did on my old G3. I tried to use LG's method but it did not allow me to fastboot. When I used ADB it just well, restarted the phone. I used the command adb restart bootloader as it states on the unlocking site. I used administrative permissions. Whats unsual is, I can use adb restart recovery perfectly fine to get to the stock recovery.
Click to expand...
Click to collapse
To begin with, I rooted mine by downgrading to LP stock rom as rooting MM is not quite easy using this link : https://forum.xda-developers.com/g4/help/how-downgrade-g4-h815-t3264864
Then I had FIsH twrp installed cause I couldn't unlock my BL using : https://forum.xda-developers.com/g4/development/locked-twrpinfish-locked-g4-devices-t3573048
>>ITS RISKY<<
Sileo2056 said:
The confusing thing for me is, the device has the antirollback version 4?
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Click to collapse
Secondly, yours has ARB v4. So there are some hardwork involved in finding a kdz that won't brick your G4 on flashing. As you say it is very much confusing. So do proceed ahead only after properly checking your informations and cross examining carefully.

LPCG7 said:
To begin with, I rooted mine by downgrading to LP stock rom as rooting MM is not quite easy using this link : https://forum.xda-developers.com/g4/help/how-downgrade-g4-h815-t3264864
Then I had FIsH twrp installed cause I couldn't unlock my BL using : https://forum.xda-developers.com/g4/development/locked-twrpinfish-locked-g4-devices-t3573048
>>ITS RISKY<<
Secondly, yours has ARB v4. So there are some hardwork involved in finding a kdz that won't brick your G4 on flashing. As you say it is very much confusing. So do proceed ahead only after properly checking your informations and cross examining carefully.
Click to expand...
Click to collapse
Many people are saying the H81520P KDZ file will work for me, apparently once I install it onto the device downgrading is pretty simple.
As for FIsH, eh... I cant figure it out at all. I was so confused by looking at the page for it, I was like eh...
EDIT: Every time I try to upload the KDZ to the device I get this. https://www.leonf.elhs.co/images/LGUP_05-01-18_11-50AM.png

Sileo2056 said:
Many people are saying the H81520P KDZ file will work for me, apparently once I install it onto the device downgrading is pretty simple.
As for FIsH, eh... I cant figure it out at all. I was so confused by looking at the page for it, I was like eh...
EDIT: Every time I try to upload the KDZ to the device I get this. https://www.leonf.elhs.co/images/LGUP_05-01-18_11-50AM.png
Click to expand...
Click to collapse
Installing FIsH is confusing at first...ask me more about it but with proper reading and carefully executing the steps you should be doing great:good:
This common error may be fixed by updating your LGUP DLL file. follow the first steps on https://forum.xda-developers.com/g4/help/lgup-install-kdz-mm-lp-t3249803

LPCG7 said:
Installing FIsH is confusing at first...ask me more about it but with proper reading and carefully executing the steps you should be doing great:good:
This common error may be fixed by updating your LGUP DLL file. follow the first steps on https://forum.xda-developers.com/g4/help/lgup-install-kdz-mm-lp-t3249803
Click to expand...
Click to collapse
Hurah, we are getting somewhere. Im now getting flashing fail and its not restating the device with that DLL!

Sileo2056 said:
Hurah, we are getting somewhere. Im now getting flashing fail and its not restating the device with that DLL!
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Click to collapse
You followed the steps as said to the letter?

LPCG7 said:
Installing FIsH is confusing at first...ask me more about it but with proper reading and carefully executing the steps you should be doing great:good:
This common error may be fixed by updating your LGUP DLL file. follow the first steps on https://forum.xda-developers.com/g4/help/lgup-install-kdz-mm-lp-t3249803
Click to expand...
Click to collapse
Yes i'm following the instructions to the letter. with LGUP. Still getting the error though.

is your phone restarting?

LPCG7 said:
is your phone restarting?
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Click to collapse
What happens is, follow the instructions on that LGUP thread that you sent me, I put the kdz in and restart lgup and then its on refurbish. I click start and the antirollback error appears on any KDZ I use apart from the H81520p_00_0314 which kicks out a Flash Fail error. Oh and thanks for helping me with this!