yashsingh1/xdaforums huggingface dataset:
[G4 General] sdembiske:
Bootloop fixes to try ... ?

From steadfasterX: His options 1a and 1b assume you have TWRP-in-Fish installed, otherwise option 2 and 3 may be worth a try.

[LOCKED][G4][TWRP][UNOFFICIAL] TWRP-in-FIsH for all locked G4 devices

https://xdaforums.com/g4/development/locked-twrpinfish-locked-g4-devices-t3573048

"Trouble / Bootloop fix

if you encounter a bootloop (should never happen but who knows) you have 3 choices at least:

Option 1a: (TWRP-Bootloop) Within TWRP open Advanced -> File Manager -> Goto: /system/su.d and click "select" button -> Delete

Option 1b: (TWRP-Bootloop) From your PC: adb shell rm -rf /system/su.d/

Important: Catch the fish log (see next topic)

Option 2 (this works also for a bootloop without twrp): boot into download mode and use LGLaf to get a shell

then:

setenforce 0 <-- if that doesn't work you may have to do a FULL restore to stock

mount -oremount,rw /system

rm -rf /system/su.d/

reboot. You are out of the bootloop.

Important: Catch the fish log (see next topic)

Option 3: Last resort: Reflash STOCK. sorry.. there is always a risk.."

Assumes of course you can get into download mode ...

S.
[G4 General] mark324:
I have no root, I have never even attempted to root it since there is none for MM, the bootloop is not a software issue but a hardware, I have somewhat fixed the bootloop with the baking/heat gun method, but it's only a temporay fix, it will still bootloop after some extreme usage.
[G4 General] mwahahaa:
As far as I am aware, LG is replacing bootlooped G4s outside of warranty indefinitely. They will ship, repair (motherboard replacement?) and return free of charge (at least here in Canada). Provided that there is no indication of physical damage to the phone.
[G4 General] paranoid365:
I actually just signed the petition, and I agree with you about not giving up so easy.
[G4 General] sdembiske:
Rather than telling people to sell their phones ...

Rather than telling people to sell their phones ... perhaps if they like the phones and don't want to take a hit on what they can get for it, they should first consider rolling back to the right stock Lollipop rom, then installing an appropriate rooted version followed by installing steadfasterX's TWRP-in-FisH newest beta version as per my post #1314 above. At least then, if a bootloop arises, there are ways to solve it. Frankly, having been on MM first before rolling back to Lollipop I haven't noticed a whole lot of difference so at least from my point of view, the drawbacks of MM with the current inability to root is too restrictive and I suspect one of the main reasons it was done by LG and the carriers. A little patience, and following the above suggestion, at lease will allow one to eventually install a custom rom and more than likely have your Marshmallow and eat it too, so to speak.

S.
[G4 General] mwahahaa:
I think you are misunderstanding the issue -- he is talking about the G4 hardware bootloop. TWRP can do nothing to remedy this problem, which has nothing to do with software/firmware.
[G4 General] sdembiske:
Perhaps ...

Perhaps ... or are u assuming it's a hardware bootloop issue? I don't believe he stated that.

If LG/carrier will repair the phone or even if he has to cover the cost - my comments stand. This issue doesn't seem to occur with everyone. A class-action lawsuit has been launched and IF it is in fact a hardware-based issue in his case, I suspect there will be a solution offered if the action is successful and perhaps even if it isn't.

Giving up and turning tail doesn't solve a damn thing in this case.

S.

---------- Post added at 07:04 PM ---------- Previous post was at 07:00 PM ----------

Thank you ... We need more of that attitude here if we hope to get these issues solved.

Cheers, S.
[G4 General] mechanic1960:
unbrick h812

hello

is there a sd card type unbrick method for our H812?
[G4 General] sdembiske:
? ... sd card type unbrick method

Not sure exactly what you mean by an sd card type unbrick method. Questions:

Are you able to get into download mode? What exactly do you mean by a brick in your case? Are you rooted? If so, what rooted rom did you use (version, etc) and who is your carrier? Are you stuck on the LG logo or are you in a repeating bootloop etc? How did the brick arise (i.e., what were you trying to do when it appeared)?

S.
[G4 General] sdembiske:
Update Alert! TWRP-in-FisH V3 Beta4 update out and ...

Update Alert!

TWRP-in-FisH V3 Beta 4 update out and ... working both on rooted Rogers/Fido H81210H and H81210N images as well as others now. steadfasterX has done it! Install, backup and restore worked flawlessly. Download link for latest version: https://www.androidfilehost.com/?fid=673368273298946284

I urge those who have felt robbed/cheated with the inability to unlock their bootloader to check this latest version out and give your feedback and thanks to him. This brings us that much closer to being able to install a custom Rom once he is finished porting over efidroid to our G4's. Yes, you will have the ability to eventually have Marshmallow and further versions installed with your rooted image and still with your locked bootloader.

Read his instructions thoroughly and follow them to the letter when installing: [LOCKED][G4][TWRP][UNOFFICIAL] TWRP-in-FIsH for all locked G4 devices @ https://xdaforums.com/g4/development/locked-twrpinfish-locked-g4-devices-t3573048

S.
[G4 General] Dylan8190:
This had actually been confirmed by LG. Just the other i read that they admitted it was due to a loose connection or something.
[G4 General] BIG_BADASS:
Would it brick the Canadian H812 if I flash the H815 International KDZ file onto it?
[G4 General] GibMcFragger:
I believe so, but I haven't owned that phone for years.
[G4 General] BIG_BADASS:
That's strange, I looked at the hardware of both the H812 and H815 and they are identical. Even the frequency bands covered by the H815 include all those covered by H812...

I'm not sure about the phone world, but in the PC world, as long as you have the same CPU type, instruction set and sometimes GPU, you can run an operating system on non-dedicated hardware. This is the basis of Hackintosh's too, believe it or not. As long as there is the Intel x64 instruction set and an NVIDIA GPU, Mac OS can be run on that PC. Curious whether its the same in the phone world...
[G4 General] ReeS86:
While the phones may be the same hardware the H812 has a different set of partitions on the emmc chip and the H812 also has a locked bootloader. So in theory if the manufacturers weren't locking the phones down so much you could run any software that supports the hardware you have, but the bootloader will leave you with a brick.

In the PC side of things we have the BIOS and UEFI which plays nice with any software you want to boot, but if you have secureboot enabled you'd have a similar situation where the PC throws up an error about unsigned code.

Check out steadfasterX's FIsH and EFIdroid, it may be a solution for us in the future.
[G4 General] sdembiske:
For those of you who have installed TWRP-in-FisH ...

For those of you who have installed TWRP-in-FisH ... Heads Up! - Power Menu app with TWRP-in-FisH recovery reboot!

AntaresOne, Recognized Developer, has done us a big one, incorporating the ability to reboot into TWRP-in-FisH recovery into his latest Quick Reboot app, version 1.4.3 available now on Play Store (https://play.google.com/store/apps/d...ckreboot&hl=en). He went out of his way to help us here and did a great job on it, so please head over to his post at https://xdaforums.com/and...eboot-t3313667 and give him your Thanks. He is a stand-up guy and the app works like a charm.

I recommend upgrading to the Pro version for the added flexibility in being able to have only the reboot options you want showing on the screen as well as the ability to integrate with Smart Bulletin. In the near future, the Pro version will be able to synchronize with the power button long press for an added benefit.

Screenshots attached.

Cheers,

S.
[G4 General] BIG_BADASS:
Well, for the locked bootloader you can do the following:

Settings > General > About Phone > Software Info > Tap Build Number until you have Developer Options. Go back to 'About Phone' and tap on Developer Options and 'Enable OEM Unlock' option is right there, simply check it
[G4 General] sdembiske:
Do some more homework ...

You seem hell-bent on bricking your phone ... Enabling OEM unlock will ONLY work in the way you want if you have officially unlocked your bootloader through LG. Unfortunately there are only a few models that have this capability. Follow ReeS86 suggestion and check out steadfasterX's TWRP-in-FisH at https://xdaforums.com/g4/development/locked-twrpinfish-locked-g4-devices-t3573048

But if you insist on trying to prove your point, Full speed ahead ....and damn the brick ... ?

S.
[G4 General] BIG_BADASS:
Either sell or wait for TWRP-in-FisH

I am about to arrive at the same conclusion. Unless TWRP-in-FisH comes up with something. Because I want to have many band support and also install custom roms... (See link below)

https://xdaforums.com/g4/development/locked-twrpinfish-locked-g4-devices-t3573048/page11

LG G4 is an amazing phone, but these stupid service providers pay LG extra to lock down bootloaders and other features. The H812 has half the original features of the original H815.....

I'm thinking of selling it and buying the H815...
[G4 General] BIG_BADASS:
So when can we expect the first stable release?
[G4 General] sdembiske:
Before going that route ...

Before going that route (you will take a hit on resale and pay a premium for an H815 – you also have to ensure you are getting the International version as not all H815 bootloaders can be unlocked), consider Enabling the Hidden Settings on your phone: just type the code "277634#*#" on your phone's dial pad and you will get a hidden/secret service menu.

Open the following menu items in this order: Field Test, Modem Settings, LTE Band Selection (for LTE Bands), then back out of that particular selection and scroll down to Network Mode (for WCDMA and GSM Bands).

The following showed up on my H812

but

whether all are active, I cannot say. However, you could try your carrier (low probability of getting a knowledgeable answer) or perhaps better, LG Canada by chat or email - tell them your phone model and carrier you bought it through and see if they can tell you what bands are currently active on your phone). If you explain your necessity for travel they may have a way to get whatever isn’t activated, activated for you if required for your particular destinations – never hurts to ask in any event).

4G (LTE Bands): 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 25, 28, 29, 40

WCDMA (3G Bands): 800, 850, 900, AWS, 1900, 2100

GSM (2G Bands): 850, 900, 1800, 1900

Compare to:

H815 LTE-A (LG P1) International (UK) – from http://forums.androidcentral.com/lg-g4/527756-lg-g4-models-cellular-frequencies.html

GSM850, GSM900, GSM1800, GSM1900, UMTS850 (B5)

UMTS900 (B8), UMTS1900 (B2), UMTS2100 (B1)

LTE2100 (B1), LTE700 (B17), LTE850 (B5), LTE1700/2100 (B4), LTE1800 (B3), LTE2600 (B7), LTE1900 (B2), LTE900 (B8), LTE800 (B20), LTE700 (B28)

S.

---------- Post added at 11:17 PM ---------- Previous post was at 10:57 PM ----------

Version 3 Beta 4 and 5 seem very stable ... so no sense in waiting IMO - keep in mind you should, as a matter of course, make sure you have mounted the System partition manually before doing a restore especially - just put a tick in that box in Mount before restoring but it wouldn't hurt to do it for backups as well (backup all partitions and restore all that hold a tick). Do not install TWRP when asked within TWRP-in-FisH when rebooting back into android - you will brick as it will try to install to your stock recovery partition.

Links to these versions are in post #195 (V3 Beta 4) and #205 (V3 Beta5) in the TWRP-in-FisH site: https://xdaforums.com/g4/development/locked-twrpinfish-locked-g4-devices-t3573048

S.
[G4 General] BIG_BADASS:
Good suggestions... I tried the code you gave to access Hidden Services, but unfortunately it says "invalid MMI code". Believe it or not, the first steps I made were contacting Virgin Mobile to find about extra bands, they said its based on the software and out of their control... and awaiting a reply from LG...

I'm going to go with TWRP-in-FisH but first I need to root it.... and that's not possible with Android 6.0... so I will need to downgrade from 6.0. Can this be done by flashing default rom?

I can't thank you enough sdembiske, you have provided me immense support. I'm new to this whole bootloader thing, as previously I had Samsung devices, and without my knowledge, all had unlocked bootloaders so I never looked into it... If it wasn't for you I would have carried forward with flashing the H815 rom and would've ruined the device. So I can't thank you enough, and I greatly appreciate your support.
[G4 General] sdembiske:
Hmm ...

Hmm ... the code worked perfectly on my phone's dial pad - didn't have to connect or anything. Try again to make sure you entered it correctly (no quotation marks if you were pasting it in) - if not, do a google search for other possible codes to try or ask LG Canada, explaining why you want it.

To downgrade, you use LGUP-NEW as I previously mentioned in another post to you, installing the appropriate stock version (10 for Lollipop as 20 is for MM) and then follow the guidelines in the first post here to complete by installing the rooted system image. Then you can go on to the TWRPin-FisH install.

Just take it easy, don't rush, reading carefully EVERYTHING - it's a learning process but others have paved the way ... to make it a little easier - just be careful and thorough and learn to be able to pass it on to others going through what you are now.

Cheers,

S
[G4 General] BIG_BADASS:
And to root it, is there a specific method you recommend? Or will just using those One-Click apps like Kingoroot, Towelroot, Framaroot do the job? By the way, to downgrade, I can't find the exact lollipop variant for Virgin Mobile version.... but there is the Telus version(H81210F)... is it worth the risk?
[G4 General] sdembiske:
Do not use the root apps ...

Do not use the root apps ... they won't work. Use the H81210N stock and rooted versions linked in the first post at the beginning of this site, they should work but if you're worried, google search for Bell stock and rooted firmware (Virgin by the way is on the Bell network).

Follow the Follow the Root ANY LG G4 Variant 100% Success Directives | Root Injection | Less Bricks (https://xdaforums.com/g4/general/lg-g4-100-root-success-directives-root-t3180586)

ONLY

for installing the rooted image and use the command for the H812 model in the 2nd post here: https://xdaforums.com/g4/...ot-lg-t3164765 found in the following box: Command to Flash System.img (All Variants):eek:NLY for installing the rooted image and use the command for the H812 model in the 2nd post here: https://xdaforums.com/g4/orig-development/root-tmo-vzw-intl-variants-soon-root-lg-t3164765 found in the following box: Command to Flash System.img (All Variants):

I'm done here guy - you got to take the bull by the horns by yourself now ...

S.
[G4 General] BIG_BADASS:
Ok thank you, I'm going to move forward with this. BTW, is there a difference between the H815 European and H815 International versions, or are they one and the same?
[G4 General] sdembiske:
Check this out ...
[G4 General] peteve:
Did anyone install the latest OTA update from Telus/Koodo and notice any improvement? Previously I was experiencing terrible BT sound quality, battery drain and bad Android Auto connectivity. Just wondering if anything is fixed.
[G4 General] sdembiske:
If you didn't carrier unlock ...
[G4 General] sdembiske:
It's called cost ...
[G4 General] sdembiske:
Good luck with that ...
[G4 General] අධිරාජ (Adhirāja):
Just got LG G4 H812, need help for root

Hi, I just got the H812 from Virgin Mobile today, and want to root it. This is my first Android phone, I have been using iPhones up till now. So please forgive my ignorance :eek: Have I come to the right place?
[G4 General] bdasmith:
Yes you have! Welcome. The first post has the files and info you need to get root on this phone.
[G4 General] Andouillette:
H812 : Android 6.0 -- Cyanogenmod ??

Simple question because it's so unclear after 31 pages inside the thread to know what to do .... :

is it possible to install cyanogenmod (or something better) on my H812 Rogers (well Fido) LG G4 phone running Android 6.0 ?

-What would be the most secure rom --is cyanogenmod still leading the custom rom world? -- (no BS, malware, unnecessary bells & whistles ) ?

-How ?

-First thing to do ?

-Which ROM ?

*THANKS*
[G4 General] matt4321:
Thread cleaned, please stay on topic!

Forum moderator,

Matt
[G4 General] bdasmith:
Hello... Because the bootloader cannot be unlocked on the h812, it is not possible to install any custom roms. Also, no root possible for marshmallow. Root canonly be done on lollipop, by downgrading using files in original post.
[G4 General] rickyleung90:
I am still new to this so I don't really know what I am doing.

I am trying to find the TWRP for the H812 but can't find it. The TWRP website has the H815 and H811 but no H812. Any solution? Thanks.
[G4 General] sdembiske:
You cannot ...

You cannot ... install a "regular" version of TWRP as it requires an unlocked bootloader, so one doesn't exist per se.

However, you can still have a non-regular version with steadfasterX's [LOCKED][G4][TWRP][UNOFFICIAL] TWRP-in-FIsH for all locked G4 devices available at https://xdaforums.com/g4/development/locked-twrpinfish-locked-g4-devices-t3573048

Version 3 Beta's 4 and 5 available in later posts on his site work very well on the H812 allowing full backups and seem very stable.

Read the posts thoroughly.

Cheers,

S.

NB: Don't forget to click the Thanks button when members answer your questions or try to help.
[G4 General] අධිරාජ (Adhirāja):
Hello,

I have read everything thoroughly and am finally going to flash the stock rogers lollipop firmware onto my virgin mobile device before I root. :eek: Just a few questions so please bare with me:

1. Do I have to do the root injection, or can I simply just flash the rooted image?

2. Is LG-UP any better than LG Flash Tool?

Thanks.
[G4 General] ReeS86:
1. You can flash the rooted image as long as the version is matching the system version you downgrad to.

2. When I downgraded I was informed that LG-UP was a safer method with less chance of a brick happening.
[G4 General] අධිරාජ (Adhirāja):
So I'll use LG-UP too then. Would any version do the job, or you need a certain version? I've come across many download links and versions, but not sure which one to use.

Thanks

---------- Post added at 03:36 PM ---------- Previous post was at 03:13 PM ----------

There is a normal version and a "Store Frame" version too.
[G4 General] sdembiske:
Use LGUP-NEW at : https://xdaforums.com/g4/help/lgup-install-kdz-mm-lp-t3249803
[G4 General] nabbasi:
Hi buddy sorry for late Response, it being a while I used XDA since there is nathing for me here. here it is link for Stock H81210N Rogers/Fido.

https://mega.nz/#!rE8h1BKL!iSRf3lYODiBR-k0AeKVpvv4pviuvIxom4euwQLmZn5o
[G4 General] sdembiske:
Thank you ...

[QUOHadTE=nabbasi;72449965]Hi buddy sorry for late Response, it being a while I used XDA since there is nathing for me here. here it is link for Stock H81210N Rogers/Fido.

https://mega.nz/#!rE8h1BKL!iSRf3lYODiBR-k0AeKVpvv4pviuvIxom4euwQLmZn5o[/QUOTE]

Thank you ... it's much appreciated. Better late, then never, eh?
[G4 General] BIG_BADASS:
You CAN flash the H815 rom onto H812 even though it has a locked bootloader... only custom roms like cyanogenmod for example, you cannot install onto H812...

The minor difference between them isn't enough to be considered as "a custom rom", if you know what I mean.

The difference between H812 bell and H812 rogers versions (on the software level) is the same as H812 and H815 European version....

All LG G4 software is almost identical... It's not like the bootloader's going to look at the model number of the software, then suicide.

I got a friend of mine to do this, and it worked perfectly... so CONFIRMED WORKING.
[G4 General] sdembiske:
I would suggest ...

I would suggest, anyone reading this individual's post, be very aware that absolutely no proof is presented to back up this claim. Proof, in this case would be a video of the process or confirmation from a 'recognized' member, not hearsay from a so-called 'friend' . Moreover, it is irrelevant to the the question it was posted to.

Addendum

:

Recognized contributor [MENTION=2607037]hyelton[/MENTION] author of [Guide] LG G4 Stock Firmware (Go Back to Stock) KDZ & TOT Method has stated with respect to the above: If its the same model then it would not be a problem.

The H815 is NOT the same model as the H812 - the implication is that it would be a problem ...
[G4 General] BIG_BADASS:
Refer to the partition tables of both H812 and H815 european versions and report your findings first.... also dont install any custom recovery like TWRP... just flash the H815 image.. thats all...
[G4 General] sdembiske:
Burden of ...

Burden of ... proof is on you, not me or any other members here. Provide your proof ... i.e., put up or .... ..
[G4 General] BIG_BADASS:
How am I supposed to give proof? I can get him to show you the phone, but it will read model number as H815 in the About Phone section ... and no where on the hardware does it say H812...
[G4 General] sdembiske:
Provide an ...

Provide an ... unedited, uncut, seamless video link showing under Settings - General - About Phone - first the Hardware info screen and then the Software info screen, then, turning off the phone, removing the back cover and the battery, showing the complete back of the phone so any fine print shows and then zooming in on the white tag under the battery so the information can be read clearly on that tag, all without stopping and restarting the video once.

This whole thread is off topic for this OP which is primarily about rooting the H812. I would suggest your 'friend' join XDA if he's not a member already and start an OP on the process, outlining the exact model, original firmware, the new firmware used and the process to install it, in detail. He should outline what the gain is, what is working, what is not and the 'why' to do it.

As officially unlocking a bootloader requires providing the phones IMEI, it is important to ensure others reading the post realize that this process will not allow one to have an unlocked bootloader, i.e., the gain would be minimal for for most people's needs. Simply carrier/network unlocking will accomplish most of what, if anything is gained with a lot less risk.
[G4 General] bdasmith:
First off... [MENTION=6302635]sdembiske[/MENTION] please stop highlighting the first few wirds of your first sentence in your posts....its very strange.

A secondly.... [MENTION=6303721]BIG_BADASS[/MENTION] please stop posting in this thread. You are posting things that have no proof behind them at all. You said you had and h812 and got rid of it. Now go to that area and leave us alone.
[G4 General] BIG_BADASS:
So we have to go back to H812 software and show you the whole process basically? Too much work.......... Now regarding the IMEI...why not change the IMEI to a european one, then unlock the bootloader?
[G4 General] අධිරාජ (Adhirāja):
OK thanks. So under the 'process' section of LGUP, should I select refurbish or upgrade when downgrading? (Im running the Virgin Mobile Marshmellow version now, and will downgrade to Rogers version of Lollipop).

Also I have the bin file ticked.

Am I ready to go?
[G4 General] sdembiske:
Refurbish to downgrade to LP, Upgrade to go back to MM. Suggest you might want to search for a Bell version (Virgin is in the Bell network) to create a seamless transition in your downgrades and upgrades.
[G4 General] අධිරාජ (Adhirāja):
Hmm, yes youre right, but I see the Rogers version has VoLTE... which is a feature id like. Also I read somewhere that refurbish option formats the phone while the upgrade option does not. Can someone confirm?