yashsingh1/xdaforums huggingface dataset:
[G4 General] McSmoove:
Please someone give me an advise.

I had an G2 that worked perfectly for 1 year and 11 months. The problem i got is that the phone was connecting to 4G / LTE connectivity on it first boot after factory reset, but after a single reboot the phone was loosing Baseband and IMEI info displaying them NULL. Now i sent my phone to LG to fix it since it's covered by a 2 year warranty hoping that they fix it and i can sell it back. The phone was rooted and had custom recovery every time but when i sent it back i tried to revert everything to stock, i don't even know if i ever unlocked it's bootloader, witch means no warranty.

Now i bought an G4 and i would like to root it in order to remove some blootware and block ads.

I saw here hat unlocking the bootloader can cause 4G / LTE network problems ( reason i lost my G2 ) and i wanna be sure to avoid it since i just bought this phone. And if that happens i won't be covered by LG warranty so that would make me an idiot loosing 2 phones and i would like to avoid it.

My question is: In order to root my phone i need to unlock the bootloader or there can be another way to root it ? On the other hand can it be that in future it would be possible to lock the bootloader back.

Another reason i wanna root my phone is to make a full backup of every partition for backup reasons in case i screw up something. I wonder if u can backup every phone partition ( Just pull the data and not write it on the phone ) without being rooted.

Since now i saw that u can have root on Lollipop with a locked bootloader or have root on Marshmallow with an unlocked bootloader. Is that true ?

If yes i also saw that if you downgrade to Lollipop u brick your G4 ? Is that true also ? If no how can you downgrade without unlocking the bootloader ?

Sorry for that many question, i'm that kind of person that piss off others ^^

Waiting for some reply, meanwhile thank you very much :)
[G4 General] WTF?:
well first of all, it may be moot, since only a small percent of LG G4 models can be bootloader unlocked in the first place.

do you know the country code? (the letter code on the end of the box) - read up here

if you are fortunate enough to have a bootloader unlockable model, then to address your next point, unlocking the bootloader DOES void the warranty, but DOES NOT affect network or LTE connectivity NOR reliability or cause ANY problems.

One reason why is that you will be using LG's own authorized tool to unlock it, so you are unlocking it the factory specified way, rather than some hack!

And yes, with Marshmallow, I don't know of a way to get root reliably without unlocking the bootloader, but the cool thing is, we now have systemless root, which is really cool in it's own right, because it leaves the system partition unmodified - very cool!

My LG G4 is bootloader unlocked & rooted and it is friggin AMAZING - in fact, I would not trade it for ANY other phone on Earth at this time!
[G4 General] McSmoove:
It's ESP so it's unlockable
[G4 General] WTF?:
The reason why it is rock solid reliable is that you will be using LG's own factory tool to unlock it, so you are unlocking it the factory specified way, rather than some hack! HIGHLY RECOMMENDED. This phone would have short battery life, get hot, have annoying ads, and system bloatware if it were not bootloader unlocked.

I would follow this order of things

turn on developer options, allow unknown sources, allow USB debugging

unlock using LG tool

get root whatever way is fine

install TWRP

install QuickBoot app from play store

flash stock ROM with systemless root - version 20D using TWRP

install AdAway (side load)

install link2SD from play store and remove any google or LG annoying system bloatware
[G4 General] McSmoove:
Thank you, i just hope i won't get 4G / LTE connection drop after phone boot like my old G2 that was loosing Baseband / IMEI info after a simple reboot ( Loosing IMEI or BaseBand makes the phone not able to use mobile networks ) and if i do a factory reset the Baseband and IMEI info come back with the mobile connection. But rebooting again the phone gets back to the first situation. It was so awkward that i sent it to assistance and meanwhile i bought a new phone :\
[G4 General] McSmoove:
I just unlocked my bootloader, installed TWRP and rooted the phone.

All seems working fine, now i'm removing bloatware with Titanium and than i'm gonna backup every partition on the phone just in case something will go wrong i'll have a backup :)

The only thing its not so cool is to have the bootloader unlocked string when you boot the phone, it doesn't look so sexy :(

Anyway thank you for your support ^^
[G4 General] FunkyMuse:
I got the same device today, you have root on it ?
[G4 General] Burlisoft:
Yes, you can root it with this method: http://xdaforums.com/g4/general/lg-g4-100-root-success-directives-root-t3180586/page13
[G4 General] FunkyMuse:
That method isn't for Marshmallow
[G4 General] belial_b:
Same here, I can't create an LG developer account . Is anyone else having this issue too?
[G4 General] WTF?:
you do not need an LG developer account - just use the link to the official LG unlock tool in the first paragraph of this guide :p

---------- Post added at 11:22 AM ---------- Previous post was at 11:19 AM ----------

the only way to bootloader unlock an LG G4 and root under Marshmallow is to follow this guide
[G4 General] belial_b:
The link in the fist paragraph goes to the LG page which has the button "Start unlocking the Bootloader", which then asks me to log in with my LG Developer account.

The page also describes the steps and the first one says ". Click Starting Unlocking the Bootloader at the bottom of this page to start the bootloader unlock process. If you are not logged into your account, we ask that you log in.".

If I'm not wrong, you can't download the tool without being logged in.
[G4 General] WTF?:
OK, I went there myself, it does look like they have started requiring a login, but I was able to register an account with no problem and go to the unlocking procedure next steps!
[G4 General] belial_b:
I tried to register several times using a different email address, proxies from other countries and varying the info i enter in the form fields just in case I'm entering something special that makes it crash but I always keep getting:

Request URL/secure/Register.dev

Date 02/04/2016 21:53:38

Message Service Unavailable. Please contact the site administrator (developer@lge.com).

But thanks anyway WTF? for taking a look into it!
[G4 General] WTF?:
make sure you allow cookies for the site - I did it on a desktop computer with no problems, less than an hour ago!
[G4 General] armaldon:
Can someone tell if this LG G4 version on amazon is the international EU model that can be bootloader unlocked?

http://smile.amazon.com/LG-H815-5-5...s&ie=UTF8&qid=1459808994&sr=1-2&keywords=h815
[G4 General] WTF?:
It is possible, but very low chance. There is no way to tell the country code from that posting on Amazon - and most of the people who have ordered International H815 from Amazon have received SEA or TWN version, and neither of those two is unlockable.

Here is the list of unlockable bootloader region codes.

If I were buying online, I would inquire with a vendor located in Europe - perhaps one on ebay.uk or ebay.de or amazon.uk, etc. or else a retail electronics store in Europe, or even a European carrier such as EE, O2, Vodaphone, etc. - I bet an economy like Greece would have some bargains, your currency will likely go far there. Paying with PayPal would add an additional recourse if the phone came in different than agreed.

wherever you purchase, I would definitely speak with the vendor on the telephone and confirm the 3-digit region code on the end of the box is one of those on the list linked to above, and I would also get a guarantee where I could return the phone with no hassle if the phone that arrives is not the agreed upon region code discussed. Paying with a credit card or PayPal would add an additional level of recourse if the phone arrived with a different code than agreed upon.
[G4 General] armaldon:
Thanks a lot for the answer and clear explanation of how to purchase the European model. Can't risk buying a phone I cannot installed a custom rom on, so I will be buying the G3 model instead.
[G4 General] Diatomix98:
http://www.handtec.co.uk/lg-g4-32gb-smartphone-genuine-leather-brown.html

I bought one from this site and it is indeed an EU model.
[G4 General] juancollado2003:
register page is down

can anyone create o borrow a lg login for me please?
[G4 General] Spaceboy60:
Getting a problem. Rebooted into fastboot mode. But when i try to retrieve device id I get: < waiting for any device > and nothing happens. Got latest adb/fastboot version. My model is H-815 and software version is v10d-EUR-XX Any ideas?

I can see the problem, just don't know how to fix:
[G4 General] vladmir:
Install the leasted usb LG drives from lg, reboot pc, connect the phone and wait to update it.

Enviado do meu LG-H815 através de Tapatalk
[G4 General] Spaceboy60:
Don't work! Using LGMobileDriver_WHQL_Ver_4.0.4.exe with Windows 10
[G4 General] vladmir:
Usb 3.0? Try 2.0!

Enviado do meu LG-H815 através de Tapatalk
[G4 General] Spaceboy60:
3.0, 2.0 don't work on either. Must Be Windows 10!? Gonna have to try windows 7.

---------- Post added at 08:29 PM ---------- Previous post was at 08:00 PM ----------

found a fix eventually:

http://www.makeuseof.com/tag/android-wont-connect-windows-adb-fix-it-three-steps/
[G4 General] siankatabg:
It will ask you for permissions on the phone to connect, press "yes" and it should work after that.

I'm with widows 10 too and i don't have to do anything else to make it work.

Sent from my LG-H815
[G4 General] droidbits:
Deleted
[G4 General] noxnoxwhosthere:
Unmatched Device ID and IMEI

Hey guys. I got the problem with the unmatching ID and IMEI, when I try to unlock the bootloader, but the IMEI of my phone matches the one on the box and the ID is also correct..any idea what else could cause that problem? I am losing my mind over this and I just can't seem to find the issue.
[G4 General] gabytzubc:
You dont have the adb drivers. I see the android have a yellow mark.try to update from there. If my answer its too late,sorry. I had the same problem just like you
[G4 General] Spaceboy60:
Found the answer somewhere else. I had to install manually universal adb drivers. Minimal adb and fastest drivers didn't work.
[G4 General] j3r3myp:
Got the same problem as my phone was serviced for the bootloop issue. You just need to send them an email to developer@lge.com (and tweet them), they answered very quickly!

It took 3 days for their database update, you'll just need to send them a screenshot of your device ID + a picture of the IMEI on your G4's backplate, under the battery. :)
[G4 General] Jwtiyar:
hey guys , after sending back to LG to repair now i have 815P not 815H and i cant unlock it from lg , any method to unlock it?
[G4 General] WTF?:
You need to insist that LG return the correct phone model back to you. H815P is not unlockable and completely unacceptable. That is not the European model and not even the international model. It is a completely different phone with different LTE bands, etc.
[G4 General] Jwtiyar:
i know its different because i had motherboard issue , so motherboard is changed and imei and s-n also changed .
[G4 General] noxnoxwhosthere:
Thanks a lot for your help! (: will do now (:
[G4 General] sigmaphi:
Oh I see just got my phone back today also from repair for bootloop problem, I will email them not with the email address you left

Thanks
[G4 General] ceanth:
guys, does anybody know if Android Pay works if the bootloader is unlocked?
[G4 General] WTF?:
my G4 H815 is bootloader unlocked , rooted, stock Marshmallow 20D, and Android Pay works fine.
[G4 General] ceanth:
Did you have to do any sort of root hiding to get past the checks which Android Pay has? I have heard of cases where people unroot/root to get past it.
[G4 General] bastab:
is there any way to revert the change (I mean relock the bootloader)? I unlocked it and now i have fear that i will have bootloop and they won't change or repair my device because of it.
[G4 General] joelalmeidaptg:
I don't think so. I think they have a database online in which they mark all unlocked bootloaders (similarly to ASUS tablets), so there's no turning back.
[G4 General] mps42:
Could it works on official android 6.0??

Alaa Assi
[G4 General] EPa:
They have no way of knowing if you unlocked your bootloader unless they have your phone. Only thing they know is whether the unlock.bin was downloaded for a certain phone.

Downloading is one thing, unlocking is another. You lose warranty for the second not the first.

They can't deny warranty based on downloading. If a phone doesn't report an unlocked bootloader their so called database doesn't mean a thing.
[G4 General] joelalmeidaptg:
All I know is some people after getting their motherboard changed in repair weren't able to unlock for an hardware mismatch, and that after contacting LG they fixed it. So yeah, I'm pretty sure they have the same system as ASUS, with a database containing data relative to all devices.
[G4 General] Caffo74:
Mine went in for the motherboard replacement back in December, it was stuck in the bootloop with the unlocked bootloader showing up on the screen when it went to LG's repair center, it wasn't a problem they were more interested if it had been water damaged, New motherboard new imei, serial number and with a new 12 months warranty, unlocking the bootloader again wasn't a problem.

G4-H815 - GENISYS 4.2 - UX 5.0 - SIMPLEGX
[G4 General] AC5L4T3R:
Interesting. Mine bootlooped on Friday (H815 - 6 months old) and LG have refused to fix it because it's rooted. I responded saying that they are required by EU law to provide a statutory warranty but I've yet to get a response. I bought mine from Ebuyer.co.uk. How did you manage to get it repaired?
[G4 General] Caffo74:
How do LG know it's rooted? Have they got already?

I contacted LG about the bootloop issue, they were more concerned about it being water damaged, they sent out a man in a van "with tracking info" to pick up and package the device, it went to the nearest LG repair centre stuck in bootloop "none rooted" but you could clearly see the unlocked bootloader text on the boot screen, Christmas went and passed and I got it back mid/late January it was well over a month they had it.

New motherboard, New serial number/imei number and with a new 12 months warranty, I unlocked the bootloader and rooted it again the same day I got it back.

They never mentioned about root or it having a unlocked bootloader which was clearly visible.

G4-H815 - GENISYS 4.3 - SIMPLEGX
[G4 General] AC5L4T3R:
Ah guess you were lucky then. I foolishly said it was rooted when they sent me an email asking for things like address, serial number IMEI and the last question was asking if it was rooted. I said yes because I thought they'd still repair it anyway. I've opened an RMA with Ebuyer so hopefully they'll swap it for a new one.. I guess they have to because of the sale of goods act and it's under 6 months old.
[G4 General] Ste4d:
http://xdaforums.com/showpost.php?p=67010183&postcount=487
[G4 General] EPa:
Read a few posts starting from #484, especially #487 (this thread).
[G4 General] Waxim1:
Hi, Is Vodafone 815 bootloader unlock available? Anyone tried this, plz reply as I m getting a deal for Vodafone but want to make sure if I can unlock and install Impremium Rom on it.. Thanks :)
[G4 General] trivium86:
I have a G4 with a vodafone Branding. I am not able to get the phone in fastboot mode. If I reboot it with "adb reboot fastboot" the device reboots in "normal mode". Even with volume up + power I can't get the phone in fastboot mode.
[G4 General] kabirjedi:
Vodafone brand Eu-Hungary H815 yes unlock possible.My unlocked.
[G4 General] KiiKeEp:
LG Flex 2 have the OEM unnlock option in developer options, does this means something?? This model isn't supported, but it's strange that OEM unlock option appears there..
[G4 General] DOMINIQUEALEXEIEVA:
Hey bro can i unlock my korian lg g4 f500 k android 6.0...? And how can i install twrp on my f500k
[G4 General] WTF?:
No, only H811 and H815 Euro code can be bootloader unlocked

Someone on UK ebay, just put up for sale 10 brand new sealed in box H815 Euro code phones that CAN be easily bootloader unlocked at the LG developer website, and they are at a low price, I just grabbed one, they will not last long, they are rare, especially at US $343 shipped :eek:
[G4 General] DOMINIQUEALEXEIEVA:
Please help me

Bro how can i install twrp recivery and root my lg f500k on 6.0MM

Please tell me advanced thakx
[G4 General] WTF?:
You cannot do it. No one can.

But what you can do is sell your F500k to your friend, and take that money buy the LG G4 Euro-code phone in this ebay listing, then you can easily bootloader unlock phone at the LG developer website, using their bootloader unlock tool.

Then with your new bootloader unlocked G4, TWRP and root with 6.0MM is very easy! :)
[G4 General] n01z:
I'm no expert, but couldn't someone take the entire phone's image and run a virtual machine to emulate it. Then just run all the potential codes (that would have been generated by the LG dev site) against it until it completes/unlocks? ..or is there hardware verification of some kind?
[G4 General] WTF?:
This is a fine plan except that it would take years to crack the encryption math via brute force with the fastest supercomputers, and I am not sure that the G4 will be very relevant in the year 2020!
[G4 General] Spillunke:
Hi,

i try to unlock my G4 again, after LG replaced my mainboard because of bootloop (sn 505), but i get the issue "device id unmatched" shown. IMEI and Device-ID filled in correctly, german h815 v20j. i only have 5 more tries if they will lock my lg developer account.

Any idea?
[G4 General] Mr.FREE_Bird:
Just send the LG Developers Team an email. They will fix their database to get your IMEI and Device ID matching again.
[G4 General] Spillunke:
How long did they need to answer my email? Im waiting since a week now.
[G4 General] Noksucow1:
They should reply within a few hours, they are probably fixing the problem for you and you will get a reply when it's fixed. I got a reply within a few hours that they denied my unlock request because they only support the Euro models right now. Even though they just released an update for my phone that provided FastBoot :confused:
[G4 General] Spillunke:
Okay, hmm. Mail was send to "developer@lge.com". I explained that my motherboard was changed by LG repair service, that i cant unlock now and i wrote my IMEI and Device-ID into the mail.
[G4 General] WTF?:
I got some kind of notice that the LG developer staff is on vacation this week for a Korean holiday or something. I don't remember the precise details. That might explain the delay.
[G4 General] Mr.FREE_Bird:
[MENTION=6212583]Spillunke[/MENTION] There isn't an average time they will answer and fix the issue for you. For some it took a couple of hours, others some days, for me it took 2 weeks till they got the same issue fixed for me. Just give it some time. They will contact you if they have questions, answers or if they have fixed their database.
[G4 General] CVAngelo:
Please sign the petition!

https://www.change.org/p/lg-electronics-unlock-bootloader-on-all-g4-devices
[G4 General] Mr.FREE_Bird:
No thanks, it won't chance a thing. Thats just wasted time to even put effort on that, LG doesn't care and probably won't even see it ever.
[G4 General] Spillunke:
Im still waiting for an answer of the lg developers to update there database, since 17.08.2016...
[G4 General] WTF?:
Don't throw your out of warranty G4 in the trash just yet if it has bootlooped, I am working on a board level permanent fix!
[G4 General] john306:
I've got 1 in for repair at the moment and 1 due to be sent in, fingers crossed they will be a free repair if not I'll look forward to your findings.

Cheers
[G4 General] housemdpc:
I just got mine back repaired and it was just out of warranty. No charge and postage was paid. Make sure yours had no physical damage before sending it in.
[G4 General] Stransky:
Hi

You made any headway on your board level fix. I have 2 G4s that have bootloop. One is totally dead and the other I temporarily fixed by applying a heat gun for a short time to the chip on the underside of the board. The phone boots into OS when cold but as soon as it heats up it freezes and bootloops again. So if you can find a way to fix permanently it would be great. If you need testers I am willing to do same.
[G4 General] axcpDev:
Hello, I have had a H815 for one year, I had it unlocked and rooted and all, with another rom. Then less than a month ago it suddenly got freezed, got repaired in LG with warranty, all OK. Now I try to get the device id doing the adb reboot bootloader, the phone reboots but it get like no respond to any action, fastboot oem device-id doesn't work. What should I do, thank you.
[G4 General] hacktheplant:
I have an h815 version but it's US. So I can't unlocked it, correct?
[G4 General] LambdaCalculus379:
I just got an unlocked LG G4 H815 from Swappa today. The three letter country code on the box says "SEA", which I'm figuring is a Singaporean model. Tried unlocking the bootloader via LG's developer page but I keep getting the following error:

I'm at a loss as to what to do. I'd like to get this device unlocked and get LineageOS onto it.
[G4 General] Minto107:
Take a look at FiSH ;) it's in G4 development, it will allow you to install anything you want on locked(yes locked that's not a mistake!) G4. Just wait for devs to release everything and you'll be ready to go ;) you must be rooted already, so prepare to rollback to lollipop as marshmallow isn't and won't be rootable ;)
[G4 General] Rogi1997:
Hey,

I just wanted to unlock my bootloader on my International G4

When i click on "Starting unlocking the bootloader" button, the site redirected me to the login page.

After I put my right login infornation there and clicked on login, the site redirect me alwas to the same login page.

I tried it with different accounts, browsers, others Computers, different internet networks and I don't know what to try more to unlock my bootloader.

Anyone else have this problem, or can help me to solve it?

Thanks
[G4 General] jurastefo:
I have same problem with chrome browser and I try to used IE8 and sign in without problem.:)
[G4 General] Rogi1997:
I'll try it ... I just testet chrome, edge and firefox

Edit:

Thanks it worked well
[G4 General] tkalfaoglu:
Is it possible to unlock the H815P ?

The official dev site refuses to unlock the bootloader, saying it's not available for your phone.. Bastards.. :(

---------- Post added at 07:29 AM ---------- Previous post was at 07:25 AM ----------

They fixed that login loop.. It started working yesterday. I had it too.
[G4 General] Jaymie1989:
Done everything from the link to LG and it said the bootloader is unlocked.

I've put a different SIM into the phone and it says network locked.

Any ideas? I just need to be able to use a different carrier.
[G4 General] kessaras:
Unlocking the bootloader is unlocking part of the OS.

Bootloader is a program that loads an operating system when you turn on the device.

For example in Linux , the grub bootloader lets you decide which os to load.

Here is the same. We unlock it and we flash another recovery, a custom one, to allow flashing other roms.

It's unrelated to the sim unlock but it can help you unlock the sim.

Only a carrier can sell his unlock code to unlock it. Ask that carrier about it
[G4 General] stillsober:
grrr SEA variant H815 no longer unlockable
[G4 General] AZstyle:
thank you
[G4 General] stinka318:
Anyone experiencing problems with the LG bootloder unlocking site been trying to unlock this LG g4 h815 for the last couple of days getting anoyed.......
[G4 General] CXENTE:
Ugh ? I have the Singapore version. FML