yashsingh1/xdaforums huggingface dataset:
[G4 General] n01z:
Huge Warning Super Important!!

I followed these ^^ instructions to successfully downgrade Koodo H81220u to the stock H81210n from the link in the OP (not rogers, VoLTE to me seems like a data killer, I rarely use voice calls, anyways). Ok, here is where stuff went mental. Post downgrade, pre root. I was smart enough to write down my APN settings, before I even started, because I've been heavy researching and reading hundreds of pages here (50 posts per page, too). I quadruple+ checked to make sure that I had matching KDZ and every tool versions' perfect.

SUPER MENTAL WARNING:

I had Google's 2-step Verification enabled. *BAD IDEA*

Downgrade killed my APN settings and it became impossible to get past the Google Sign-in. I could not recieve calls to get my Verification Code!! I could not change my APN settings without passing the initial sign-in screen and I needed the verification code. The device was asking for a login from a Google Account that had been previously sync'd with the device, saying the device has been reset. So, no alternative account would work. I was using my phone's hotspot on my laptop because I just moved and haven't got WIFI, yet!! I found all of this out when I went to use the Library's free WIFI, as my Mobile Data would never work without APN settings.... I don't know anobody on my provider that I could pop my SIM into their phone to get the code, nor anyone with an unlocked phone.... I maybe could have ADB pushed the rooted.img to the phone and skipped to root procedure, but I'm not willing to risk a bootloop/brick (I've saved my old S5 from several bootloops and even a soft brick, but that's with an unlocked bootloader). The LG root eco-system is pretty much new to me. My last LG was a P970G. My first Android, and rooting that device was a breeze!!

Good thing I'm a 5 min e-bike ride to the Koodo Shop!! They popped in my SIM Card to one of their phones, I loggged into Google on my G4 using a David's Tea free wifi, they put the verification code on speakerphone for me, and I was IN.

HUGE HEADACHE!! If I hadn't lived so close to the mall, I would have been toast. PLEASE BE AWARE!!

On a more positive note: I'm now ROOTED.

I disabled Google's 2-Step before proceeding to root. I wasn't sure, but the APN settings stuck from 81210n to rooted 81210n.

Thanks, everybody!! You all just made my day. Too bad I only get to give 8 "Thanks" a day.

ONE MORE QUESTION: If something goes wrong in the future.. Do I have to LGUP the stock KDZ then root, or can I just skip to root procedure with the rooted 81210n now that I'm on rooted 81210n??
[G4 General] n01z:
Update

Well.. 2 days of having this phone.. Never dropped it, never even scratched it, and I'm looking at USB hardware failure. I'm getting anywhere from 50mah to 300mah charging, but if I angle the cable perfectly I can get ~650mah.... I should be getting 1800mah. Wow. What a terrible phone. .
[G4 General] n01z:
Update's Update

Ok, well, after waiting 2 hours to get the G4 replaced. I get home and.... another USB FAILURE!! It seems that the shop has a bad batch of USB Cables (one gold pin missing in each, which toasts the USB input for any phone it's connected to..) From 50% it said 9.5 hours till full charge.. Madness. Sorry, everyone.. I'm on a MOTO G4+ now. Which took another 2 hours to get working with my grandfather plan- $60 for 6GB doesn't exist anymore. I feel bad for the Koodo Reps, they really did their best with what they had available. I'm sure it was a freak batch error, but I never want to see another LG device, ever.
[G4 General] bdasmith:
How was it the phones fault? Stop blaming lg for a bad usb cable! Love my g4!
[G4 General] n01z:
I got them to open another brand new one and it was missing a gold pin as well- that's 3 USB input hardware failures in a row!! It was clearly a bad batch. Manufacturers' warranty covered me. That's LG saying, "Oops, our bad.."

The cable toasted the USB input and no new or other brand cable was able to charge the device. Literally plugged into AC and watching the battery level LOWER on multiple devices. I'm blaming LG because it was the LG brand stock cable that came out of a factory sealed box. I liked the phone, but it was rendered unusable. This is 100% LG's fault. Love yours as much as you like, I hit a WHOLE BATCH of malfunctioning devices. Sorry, no apologies.

---------- Post added at 08:39 PM ---------- Previous post was at 08:34 PM ----------

Have fun waiting for your Bootloaders to be magically unlocked.
[G4 General] bdasmith:
Now thats understandable. It wasn't totally clear that you speaking about the charger cord from the box of both phones. My apologies!
[G4 General] n01z:
I realized that as I re-read my post.. I feel I owe something of an apology for my response. None of you are to blame. In fact, I was super excited to have obtained root on a BL locked device. Thanks to all of you. I still gained experience. Kinda upset that I never got to truly work that device. Life hasn't been too Good, for me the last couple of days.. My bad.
[G4 General] n01z:
You do bring up a good point about not blaming a faulty USB on the phone itself.. I'm willing to give it one more shot.

So, on my 3rd replacement (in as many days) I went for the Moto G4+.. It charged fine and I thought that everything was ok... Except, I find out later that it has no NFC- which is a dealbreaker for me.. Also, the GSMarena stats are a jangled mess (says: 16 Gb ROM-2GB RAM or 32GB-3GB RAM or 64GB-4GB RAM.. My device settings showed 32 GB ROM with 2 GB RAM). So, I went back for another replacement (4th phone)- this time I had a plan for the LGG4. When they opened the factory sealed box, the USB cable was ALSO missing one gold pin on the male side, STRAIGHT OUT OF THE BOX!! I noticed this on the first and second LGG4 USB cables, but thought the pin just fried after/when the device malfunctioned- inside the USB port of the phone you could see the tiny burn mark where it got toasted. So, 4 phones, at ton of missed calls and messages, 3 days and 6+ hours of waiting in the mall and I got them to give me another brand of USB cable, tossed the malfunctioning 4-pin LG stock cable, and I now have a charging/working LGG4. Is Life Good?? It will be when our bootloaders get magically unlocked. I'll be having fun waiting with you. It WILL happen.. It's just a matter of time (perhaps once everyone's tabs' 2-year contracts are all re-paid.. I feel it's more about losing money on warranty claims- than security. I mean, how many morons read the OP, jump to flash then whine about bricks and bootloops?? Businesses only care about money)

---------- Post added at 08:49 PM ---------- Previous post was at 08:48 PM ----------

I believe this counts as one of my greatest flip-flops of all time.
[G4 General] bdasmith:
I think you will enjoy this phone even not rooted! I know i do. Glad that it worked out for you.
[G4 General] n01z:
I just really need root for my firewall and my Titanium backups.. I have to say, I actually really like the LG Keyboard. I'm used to a themed black AOSP style keyboard in CM but LG's comes with a dark/black theme option built-in stock. Google's keyboard isn't even as cool. I mean, I'm impressed with the stock LG OS comparing LG's version of Android (What do we call it??) versus Touchwiz on Samsung.. I see plenty of additional features.
[G4 General] gas967:
Hi. Does Exodus ROM H811/815 work on model H812 (Canadian model, Fido provider)? I couldn't find Exodus for LG G4 H812 model.

Thanks
[G4 General] n01z:
Xposed info, fix v74 xposed bridge error

Ok, so I didn't find this info anywhere.. I read about someone running xposed-v80-sdk22-arm64 on our variant. The guide (linked in the OP) said to use v74. That's what I started with. On v74 I ran into an xposed bridge error when trying to activate ANY modules. So, I read up and learned that sdk21 is for Android 5.0, sdk22 is for 5.0.1 and sdk23 is for 6.0. So, I went and flashed (FlashFire- CRAZY RESPECT TO [MENTION=631273]Chainfire[/MENTION] , Legendary.) the latest sdk22 v86 (also, unchecked the mount system read/write when I upgraded, but I doubt that did anything). So I figured that another sdk22 version would work as well. I can confirm that xposed-v86-sdk22-arm64 is working fine. I'm on H81210n, rooted, obviously.

---------- Post added at 11:48 PM ---------- Previous post was at 11:45 PM ----------

I don't believe that custom ROMs/Kernels will be supported until the (insert your carrier name here) H812 gets a bootloader unlock.
[G4 General] a2b2angelo:
lg-h12 roms?

assuming I downgrade, install twrp and root, what ROM options do we have for the H812? I am not loving the LG interface:|
[G4 General] Jahcure:
Just got a g4 and wondering the same thing. Actually wanting to know if i should keep this phone or change it for somthing more root / rom friendly
[G4 General] mark324:
Change it, I was impressed with this phone when I got it, but got bored of it after few months cause I can't play with it, meaning rooting installing rom, I shouldn't have upgraded to marshmallow when I got it, there's no root for it. And I don't think there's many developers working on this phone. So don't bother waiting for root or bootloader, this phone is old news. I'm going back to Samsung if they are still root friendly and unlockable bootloader.
[G4 General] Jahcure:
So do you recomend anything right now im with rogers as a carrier and got this phone as a upgrade i can return it and choose somthing else but the pickings are slim ie s6 or s7...
[G4 General] Jahcure:
I am actually trying to sell the h812 and considering the h815 thoughts?
[G4 General] 350Rocket:
I made an assumption that this phone would be similar to other Canadian phones and be similar to either a T-Mobile phone or an international variant. This is the first new phone I've gotten in a while and had no intention of rooting it immediately. I'll wait a year until the warranty is gone and then do it so i can get updates that lg won't give us. Hopefully it will be possible by then. My phone came out of the box with marshmallow installed.
[G4 General] Jahcure:
Same here. I could deal with interface but i cant deal with ads
[G4 General] spartan268:
You can only root but you cannot install a recovery (twrp)! Meaning you can tweak a few things but absolutely no custom Roms or kernels. If you got this phone for tweaking Roms, consider looking into another option.

I would recommend the S7E. My brother has it. Battery life is amazing on it and in Canada it's the Xynos model so we can get custom touchwiz roms on it. I believe there's no AOSP so it may be a dealbreaker for some
[G4 General] NickSVT-40:
Does anyone have a link to the new Bell H81220w kdz file that came out 4 day's ago?

I'm on Rogers but my G4 is a Bell device currently on 20v
[G4 General] Matt1Allen:
Can I root my LG G4 H81220x?

I have been trying to find something but can't, if anyone could help that would be great.
[G4 General] mathsz:
Too bad about this phone.

no root.

no twrp

nothing but stock

HEH

Time for nexus 6
[G4 General] 350Rocket:
If this remains true then this will be the first Android phone I've ever had that could not be rooted or modded or anything at all.

And long term I've never stayed stock. Hopefully it doesn't drive me crazy this time.
[G4 General] nujaxx:
I'm very surprised there is no root or unlocked bootloader yet for this phone. It's such an amazing phone, it would literally be the best phone I've ever owned if i could run cyanogen on it. Even tho, it's really not that bad locked stock. Someone will eventually make it happen I'm sure. But it's a bummer for sure right now.
[G4 General] AmonX:
Is there any way to get Magisk on my G4 so I can play pokemon go again? Or a way to hide root and xposed from the phone to pass safetynet?
[G4 General] peteve:
Just here to share my experience with G4 bootloop issue.

My G4 was bought last Dec and bootlooped last month. So I sent it to Koodo, my carrier, for repair. It takes 2 weeks, which I think is too long. I got it back on Sept 13th and can tell LG replaced the motherboard and the IMEI sticker because I see glue residue.

Another problem is, the phone I sent in is unlocked through eBay. Koodo refused to unlock the current one unless I pay $35 for it. They even told me third-party unlocking should void the warranty, so I am 'lucky'. I am contacting LG for a solution.
[G4 General] 350Rocket:
That seems ridiculous. No way unlocking should void warranty
[G4 General] StaticDroid:
I just received the 1220j firmware for the videotron network in Québec a few hours ago.

Looking through it now. Contains the August security updates.
[G4 General] 350Rocket:
I'm not doing any updates on this phone for a while. If a root method comes out for the software it's on now I don't want to have done an update that it won't work on for whatever reason.
[G4 General] jmlp:
NEED HELP

My G4 H812 has software version h81220w im with bell i cant find a lp kdz or a pre rooted image any help would be great!! :)
[G4 General] mathsz:
sigh.

this is what made me go nexus.

I hope I wasn't wrong.
[G4 General] xarekusu:
I have fido G4 with MM and I want to downgrade to root

I need to flash H81210H rogers stock with Lg flash tools

then I flash H81210H root system image with LG flash tools

Do I have the correct steps?
[G4 General] sonovman:
Hi

I already rooted a g4 h812 with koodo carrier using this guide plus telus kdz, and it worked great..... Now Im trying to root another g4 h812 except with bell mobility and all the kdz's tried so far causes loss of lte.... Also I dont know how to download the firmware off the devtester.ro site, all the links seem useless, anyone know what to do threre? Or know of another source for the kdz I need??

Thanks
[G4 General] eboy_gb:
Maybe you have to manually input the APN values?
[G4 General] sonovman:
I did have to manually input the apn values but it did not make any change.

One thing i did notice tho.... The MSS protocol: WAP 2.0, does not exist in my apn settings list... If that matters
[G4 General] AmonX:
Accidently installed magisk and now my phone is stuck in the secure boot loop thing error 1003. Is there any way out of this without flashing a kdz?

Edit: Well I ended up flashing the KDZ, followed the steps to root my phone and then install xposed... that was a pain but at least I didn't lose anything.
[G4 General] eboy_gb:
My phone just started bootlooping now - anyway to stop it? LG flash tool? Factory reset?

Or should I start looking at other phones? I'd like one with a good camera and 5.5" or greater screen? any recommendations?

Nexus 6P? Pixel XL? S7 Edge?
[G4 General] AmonX:
Go for the Pixel XL, if you do buy it from the USA just make sure it isnt a Verizon one. According to google support the Canadian phones will not be carrier locked nor will the bootloader be locked. I have been told that the Verizon phones will get updates from Verizon instead of google. I want a Pixel XL 128GB model but I dont want to pay $1200 CAD for one when my PC needs upgrading.
[G4 General] eboy_gb:
Yeah, the XL is the cost of a PC...

Maybe I should give the Axon 7 or the One Plus 3 a shot....
[G4 General] geoffmen:
Is it possible to activate the FM Radio?

If you root the device can you activate the FM Radio?

I just bought one two days ago, only to realize after spending several hours configuring everything, that the radio was disabled. I exchanged it for a Moto G4 Plus, which isn't as nice but at least I get the essential FM radio.... I wonder though, if it were possible to get the radio working on the LG by rooting it I could still go get one back, I have a week left to return it.
[G4 General] spartan268:
Axon 7 has been a rave for most as well as the OP3. Just the whole support side of it wouldn't be too great in the case of major error.
[G4 General] eboy_gb:
I'm really leaning towards the Axon 7 spec-wise but camera seems to be hit and miss...(still haven't been able to find out if it's been fixed via update)

I got used to having a good camera with the G4.

Ugh, I don't really want to fork out the cash for an s7 edge....
[G4 General] spartan268:
It won't be a bad investment that's for sure. My brother has the edge and the battery life is twice as good as the G4. Not too mention it can be rooted and unlocked up in Canada as well
[G4 General] impossibilium:
I'm upgrading tomorrow morning from the G4 to a Nexus 6P. They're really cheap right now at Rogers and Bell (0-$50) if you resign your contract. Solid phone, rootable, large dev community. So long, G4.
[G4 General] gh0st:
My G4 just refused to boot last week. Looks like its part of the defective batch. Wondering if anyone else had this issue recently.

Sent my phone to the service center for repair. Hope to get it back soon.
[G4 General] eboy_gb:
I just bought an s7 edge yesterday because my G4 crapped out on the weekend.

I think I'll send the G4 in for repairs (if possible - I've changed carriers), then sell it once I get it back.
[G4 General] spartan268:
Far too many had this issue. It happened to me in March. Bought it the previous year in June. So far the phone has been phone post repair, but then again last time it happened out of the blue as well with no signs at all.
[G4 General] xmod0:
Sooo... if i'm understanding this correctly. I am SOL till something unlocks the bootloader on my G4 H812 Videotron on latest phone update ? i just wish to obtain root to change the resolution mostly.
[G4 General] ReeS86:
You're not out of luck if all you're looking for is root. You'll need to downgrade to LP in order to push a rooted system image to your device. You can use root, Xposed and anything else except running a non-stock ROM or kernel. If you search this thread this has been discussed many times already.
[G4 General] jamesbond700:
So If I have a Rogers LG G4 with software version H81220x and Android version 6.0 (MM) and I would like to root it.

To my understanding I need to do the following:

Downgrade to lollipop

Install one of the KDZ files (I'm going with the supplied H81210H in the original post), is that the one I want? When you say 20x is for marshmallow and 10x is for lollipop, does that mean you download the one for what you have or what you want?

??? Custom recovery? I'm not sure where to go from here

Can somebody briefly but technically explain what I need to do here? I don't want to brick my phone but I am so sick of my phone running slow as molasses when I've already disabled all carrier installed apps, basically have extremely minimal everything (no music, only a few apps installed). My old Nexus 5 still runs faster to this day than my G4 :(
[G4 General] alexvtr:
Have you simply tried to factory reset it?

Removing a few unused apps will only regain a few MBs of space but won't speed up your phone.

Lollipop did't run any better on the G4 and you may lose some benefits if you're on a rooted LP vs stock MM (wifi calling, VoLTE, soon Android Pay, etc.).

And since you'll be running a stock but rooted version of Rogers LP, there are no major tweaks / slimming down applied to this ROM (unlike if you could go with a custom ROM but there are none for the 812).

I suspect lots of times, people see an improvement after rooting based on the single fact they now run a fresh install and never bothered to reset their current ROM.

Also, it's a hassle but restoring apps and their settings instead of fresh installs is often the cause of continued issues after a reset.

There's no reason a N5 should run better than a fresh, stock MM G4. Yours most probably has some apps / settings slowing you down.

If you already tried it all that, ignore my post. It was just a thought. :)
[G4 General] Flogisto:
Thanks for the reponse....I will check it out...So far I have always been talking using speaker because I lost my handsfree headphones :crying::crying:. Im really tired of this issue, I'm considering getting a OP3 or a ZTE axon 7
[G4 General] spartan268:
It's been a while since I done this so I can't go into detail. You'll need to downgrade to LP by using a KDZ file. That KDZ file will take you to a particular version. 10x is what you're looking for since this is referring to LP. Next is to download the root injected image and put it onto the G4. There's a YouTube video on this portion, and it's not as daunting as it looks, just do some good research on it beforehand.

Root can only help so much though for the phone performance. I feel this phone is really lacking a custom rom. And a quick heads up. With root access we can only install root apps and exposed modules. But NO custom Roms or kernels, which personally is the main bread and butter for really unlocking your phone imo.

As for your slow performance. Easy answer is to do a factory reset. Seems like you already tried debloating. Also disable any useless function such as dual window if you don't use it and accessibility options. Clear cache for all apps for a fresh start in case it's been a while. There's also things like greenify to keep apps suppressed
[G4 General] jamesbond700:
Thanks for the suggestions guys, I guess I will try a factory reset. Another thing that bothers me about this phone is the inconsistent battery life. Some days it barely drops below 80% and some it's at 50% halfway through the day. Maybe I got a lemon, it sucks because my old nexus 5 I never had to reset
[G4 General] AmonX:
Is it possible to get root in MM using the Dirty Cow exploit?
[G4 General] StanWiz:
No sure if this is the correct thread for my question but... Six months I downgraded/rooted using the instructions in this thread.

Today I managed to mess up the screenshot feature ( get : File damaged. Cannot copy this. error) . It appears that the solution is to flash back to stock .

Stock what? LL kdz or my saved rootedsystem image ?

Thanks

Edit: looks like I was barking at the wrong tree - it was a permissions issue ( extsd) , somehow screenshots were written to the external card ( internal memory for the last 6 months) - no idea what made it change all of a sudden. Editing platform.xml solved the issue.

I would still appreciate an answer to my original question.
[G4 General] yazmo:
looking for the right kdz roger h81220x

i dunno which kdz i have to use i check the list dint see it there, its a roger canadian version quebec LG-H812 software version H81220x i see H and O but dont see the X version?
[G4 General] StanWiz:
The x is not a version number - it simply means to use the appropriate version for your provider.

It would appear that this thread is more or less dead now (like the g4 lol)
[G4 General] kwarwick:
Great misinformation... "lol".

Actually x is part of the version number. h812 20x is the latest version for Rogers.
[G4 General] StanWiz:
Well I'll be... this thread isn't dead after all.

Thanks for the clarification.
[G4 General] yazmo:
what kdz i have to use if i have h812 20x, i can use any of the h812 20 but i need the full kdz is that what i understand?

---------- Post added at 08:04 PM ---------- Previous post was at 07:59 PM ----------

i am at the same point of this guy above your post, i have lg g4 h812 20x from roger, i wanna know if i can use any of the h812 20 version full kdz? btw ppl want to root for different reason i wanna root so i can use 60 fps videos recording. not about MB on the phone we could save.

i have the file only thng is missing is the a correct answer so we can move on and proceed to the rooting.
[G4 General] gabutron:
OKay...i was trying to root my phone lil bit ago, but was unable to unlock my boot loader in order to flash anything..ive tried looking for days to no success.. wondering if there is a way... i have a wind g4 h812

running software version h81220j ?

any help/answer would be appreciated.

thank you

Gabe.
[G4 General] mb_guy:
http://xdaforums.com/g4/general/discussion-unlock-root-situations-please-t3122752
[G4 General] Mini Franki:
Its a real nightmare. 1st time i cant put a custom rom and now we cant root too... Now what i do with all my titanium backup!!! I have a lot of important data to put back in
[G4 General] ReeS86:
You can easily root your G4 if it is the Canadian version by downgrading using one of the Lollipop KDZ files and the LGUP utility. Please read the first post in this thread and the LGUP threads and you will have all the information you need to have root and xposed.