yashsingh1/xdaforums huggingface dataset:
[G4 General] glenrocks:
External SD-Card fails to mount - tried reformatted readable fat32+exfat

Meanwhile, I tried non-Rogers firmware install using stock kdz H81210N (from post 1 here) and then superimpose rooted image H81210N by anterus... still H812 did not mount the external-sd-card (but this time greyed out mount/unmount option got enabled under Storage Setting. How to activate mount ext-sd and where ??? I did try reformat ext-sd on PC and another G3 phone (not sure what format LL and MM use) where both fat32 and ex-fat formatted used cards (as I do not have new card) are working/readable on pc, g3, samsung phones and usb holder. Strange!!
[G4 General] ReeS86:
It definitely sounds like you're having the same issue I had. The files I'm referring to are located in the internal memory in /system/lib/modules and they are the kernel modules. If you look in there you'll see there is an exfatfs.ko that is not able to load and that's why your phone cannot read the SD card formatted into exFAT format (but will work with fat32, or other formats).

The reason that it's not loading correctly on your phone is that you have (again, assuming you did the same as me and others) flashed KDZ with a fully compatible modem, boot, kernel, recovery, etc.. and you're replacing the system partition which contains the modules from a different version kernel with another system image that was rooted. Upon investigation I found that there is no Rogers H81210n KDZ available online and the ones posted in this thread are actually Videotron/Bell. So when you use the rooted Rogers system image it breaks things such as VoLTE and exFAT. To fix this I just grabbed all of the *.ko kernel modules from my old system image and copied them back after applying the rooted image to my phone. This way everything loaded and the SD card was mounted.
[G4 General] grantdb:
H812 AOSCP Oreo working is freaking amazing! Did you use SALT to unlock your bootloader?
[G4 General] glenrocks:
External-SD-Cards-Saga continues

[MENTION=1258758]ReeS86[/MENTION]

Possible for you to give me an image to impose, which includes *.ko kernel modules u mentioned. Seems like I can duplicate images of phones I like..... maybe in future, no one here goes thru same pain as us. If not the image, then let me know how to isolate *.ko kernel modules from kdz or img to use.... Currently I am on rooted image of 81210n by [MENTION=3526897]anterus[/MENTION]

---------- Post added at 01:02 AM ---------- Previous post was at 12:48 AM ----------

FYI, I was able to erase modemst1/2 using SALT [MENTION=5545101]steadfasterX[/MENTION] but on H812, unlock SIM Network Code is absorbed there which resets so-thought permanent carrier unlock... probably thats why the phone I got had issues with US GSM...... No big deal.. as I will post the update when I get actual network sim unlock code...... Hopefully it will save lots of G4 H812 using US GSM carriers the "pain".

Regards!!

Linux based LG phones r powerful but we end-users needs to be guided well.

I will post simple 4 steps to install SALT soon here too!
[G4 General] DoughMucker:
Yes, SALT plus some files provided by steadfasterX.

And steadfasterX just helped me get Download Mode working. So, everything seem to be working really well!
[G4 General] glenrocks:
Update: I got the SIM unlocked but still no love from G4-H812 for US GSM...Still get Random disconnection-Out of Service msg...Not sure what LG/Canadian setting is interfering.... Any way I can start from scratch with clean install ?? Suggestions??

Or can I join [MENTION=5545101]steadfasterX[/MENTION] Oreo bandwagon??
[G4 General] Edgehead123:
Hey Guys, I'm on a koodo Lg G4 H81220z. I'm changing carriers to Telus. I have the phone unlocked and know it will work with Telus. I'm researching Stock rom flashing because I want to be able to access Telus' VOLTE. When I look at stock roms I see only Telus roms and not koodo which make me think I should flash 1 of them. But I also have never seen H81220z mentioned before...

So my question: is H81220z a Telus rom and VOLTE will be available when I put in the Telus sim card?

or

should I flash a stock Telsu rom? if so what is the difference between h81210f and h81210g?
[G4 General] sdembiske:
Refer to my post 1470 in this thread.

Note this line in particular

:

My research of Canadian carriers to-date, suggests none of the Canadian carriers have incorporated VoLTE for the LG G4, period.

IMO, not worth the changeover - they are basically the same rom. Telus doesn't support VoLTE on the LG G4 ... google the Telus specifications for the H812 on the Telus site and check for yourself - VoLTE is only supported by specific models by some manufacturers. Even Rogers/Fido that has the VoLTE option enabled in their H812, doesn't support it on the LG G4 in particular ... go figure.
[G4 General] NestorRamUre:
Wich version and wich rooted-system i have to choose if i'm fron Dominican Republic?

Well look, i'm a Claro's costumer and when i have the half of the mobile signal, i can't call!

Can anybody help me?
[G4 General] sdembiske:
If your H812 phone was bought from Claro's and has a Claro's sim card, the problem you are facing could be a result of a lack of coverage in your area. If you bought the phone from someone other than Claro's or are using a sim card from another phone you had, you may want to consider buying a new sim card from Claro's. Failing that, check your apn settings to make sure they match Claro's properly. Claro's does not offer a wide range of band coverage. You may want to set your network preferred mode to GSM only and see if it makes a difference.

In theory and practice you can flash any Canadian H812 rom on any Canadian H812 phone, it makes little difference as they all provide the same network bands. Not sure about the Dominican Republic, but you can give it a shot if willing to take the risk.

Your safest route would be to extract a backup copy of your current rom (assuming you are on Lollipop already) and inject root into your current rom following the directions in https://xdaforums.com/g4/general/lg-g4-100-root-success-directives-root-t3180586 or failing that look for a Lollipop rom for your country for the H812 and downgrade with that rom before injecting root.
[G4 General] glenrocks:
I broke Audio now by mistake of using US carrier system modules :( in addition to extSD and modem dropping call with ATT. I was able to take TWRPinFiSH route, so is it possible for you and/or sdembiske to help me with clean system image to use and test ??

Thanks in advance to both of you. Let me know if there is a way using FWUL too using rooted images... whatever fixes this H812 phone.
[G4 General] sdembiske:
Refer to my answer in the TWRP-in-FiSH thread in post #426.
[G4 General] glenrocks:
Thanks for responding!! My struggle with H812 continues as I mention there!!:(

---------- Post added at 12:15 AM ---------- Previous post was at 12:12 AM ----------

I do read how you both have played with H81210n/o, now with TWRPinFiSH active, I can use <10n> or <10o> image and test if it works!!

Thanks in advance to both of u.
[G4 General] glenrocks:
Update

Its sure that LG G4 H812 is a prickly struggle.

Summary of things I have noticed and tried:

- Install LG Drivers

- Install LGUP New

- Use Stock MM

- Use Stock LP

- Use Multiple KDZ files

- Use Rooted Images

- Used TWRP-in-FIsH to expose boot options

- Use FWUL under VM Windows 10 and explore SALT to Backup

-

Will complete this list later when I can resolve my Modem/SD Card/Audio issue as I said and read that KDZ does not refresh bootloader stacks and resets modem settings using LGUP new refurbish option. ( unless I am wrong in stating that)

Disclaimer: I do want to mention that lots of online sellers are doing weird mixups to sell these models... maybe they are mixing up components on main motherboards of devices which could be source of my problems of modem/call out of service in US GSM ATT too - dont know-- but SD Card/Audio is not.... just suspecting it (is there a way to verify from labels on the phone-- are they all H812 or in my phone there are some with H810 label ??)
[G4 General] Mick23:
Need some help

My phone recently started freezing during videos/games, the screen is sometimes unresponsive, and the playstore downloads are slow and then hang on install. I have tried everything I can think of such as: new battery, removing sd card, factory reset, safe mode, new keyboard app, clearing cache etc. It was suggested to return to stock lollipop and basically start from there. It is a stock Rogers h812 LG G4 with mm 6.0. I was looking through the numerous pages and I am confused as to which files I would need to accomplish this. Any help would be greatly appreciated.
[G4 General] sdembiske:
Use this file: H81220x_00_0712.kdz

- available for download at:

https://lg-firmwares.com/lg-h812-firmwares/

hint: scroll down to RGS - North America - CA/Canada.

I have used it in past with no problem. Download LGUP-NEW (https://xdaforums.com/g4/help/lgup-install-kdz-mm-lp-t3249803 )and install it with that program. Read the thread posts there to get an idea on how to use it.

Back up any user data before doing the install.
[G4 General] mwahahaa:
I also recently started to get these problems on my rooted H812, but on lollipop. Under kernel adiutor it shows the cores periodically going crazy at idle. I haven't isolated the source of the problem yet but it may have something to do with Google play services which is showing increased activity in my battery monitor.
[G4 General] sdembiske:
if you have Xposed installed you could download and install AppOpsXposed - using that app, turn off "Keep awake" for Google Play services and Google Services Framework which interacts with Play Services.

My suspicion, however, is that you have developed a corruption some where along the line - you could try clearing cache and data for Play services and as a last resort uninstalling it and then pushing it back in with a clean apk.

Failing all that, a stock re-install may be your best shot ...
[G4 General] Mick23:
Thanks, I will try that today.

---------- Post added at 09:02 AM ---------- Previous post was at 08:26 AM ----------

Hmm...can you let me know if you find a fix, and I will do the same. Thanks.
[G4 General] අධිරාජ (Adhirāja):
Hi guys... so I have noticed that some apps on my phone are missing, mainly these ones:

LG Browser

LG Radio

LG Smart Notice

LG Mirrorlink

Just wondering, is it just that bell/virgin version lacks them, or other carrier versions also lack them?

Cheers.
[G4 General] spartan268:
I don't remember having LG browser or radio. The smart notice is the iconic home widget they have so it should be there for sure. Mirror link I remembered uninstalling the apk but never used it or know it's function.
[G4 General] sdembiske:
Re: The LG Radio app on H812 (the other apps? - don't know, don't care).

The LG G4 wireless chip is from Broadcom and has a closed-source driver. It is proprietary code. Carrier unlocking or rooting will not enable wireless FM on your phone and the Next Radio or Spirit FM apps will not work . As much as any member might like to think they can solve it, they can't unless LG makes it open-source or provides their private proprietary coded FM app to the carrier phone model and software version.
[G4 General] අධිරාජ (Adhirāja):
Yes, it looks like our version is missing some apps... the complete list of stock LG G4 apps is here:

https://xdaforums.com/g4/themes-apps/fm-radio-quick-remote-apk-t3195648

---------- Post added at 01:51 AM ---------- Previous post was at 01:30 AM ----------

Very interesting.. I decided to do some research on my own and found manufacturers disable radio chip. I downloaded the NextRadio app and it says "FM radio is unavailable".. but that was expected.

Here's the astonishing part.... my previous phone was an Alcatel One Touch Idol 2S also Bell with a working FM radio. It comes default with a radio tuner app even. I downloaded NextRadio on that, and even then I got the message "FM radio is unavailable... let your carrier know you'd like to listen to free fm radio..."

So if I'm getting the same message on a phone with working fm radio, could it be something else?
[G4 General] sdembiske:
Yes, reading more carefully and .... forgetting the 'Thanks' button ...

key words

: provides their private proprietary coded FM app to the carrier phone model and software version
[G4 General] Mick23:
Canadian models don't come with a radio. Smart notice and mirroring are both on mine. As for LG browser, I wouldn't have used it anyway.
[G4 General] අධිරාජ (Adhirāja):
Could this be the reason NextRadio app doesnt work on my Alcatel OneTouch Idol 2S, even though the stock FM radio app works? Because the stock app is proprietorially coded, whereas NextRadio is not?

Also, just one of my ideas....... on our G4 variant, can someone who is on Android 6.0 please download the stock LG G4 FM radio app from here:https://xdaforums.com/g4/themes-apps/fm-radio-quick-remote-apk-t3195648

And see if you can get any FM ? Thanks.
[G4 General] sdembiske:
Yes that is probably the main reason - the other being the wireless chip has a closed-source driver and the app is keyed to it.

Don't ask people to do things that you can do yourself. Still not getting it? The app is most likely designed for the H815, not the H812 - i.e., ... private proprietary

coded to the carrier phone model

and

software version

... hmm ... ?

Research it - you will find that it has been tried ...
[G4 General] අධිරාජ (Adhirāja):
I would install it if I had Android 6.0 but I have the rooted 5.1...

Also when you say "wireless chip", do you mean the NIC/network card or is there a separate chip for the FM? Or is it 1 chip that has both functionality?

And whats the real difference between h812 and h815 ? It looks like the same phone but with a different branding because different country. I'm under the impression all G4's are the same besides the carrier apps?? It's not like the Samsung Galaxy S7 which has to models: one with Exynos processor, and second with Snapdragon Processor. Please correct me if im wrong. thanks
[G4 General] sdembiske:
Wow ... you're on 5.1 ... geez ... who would have thunk on this thread ...?

Do your own research ...
[G4 General] අධිරාජ (Adhirāja):
sdembiske, I have done some research on the bootloader and also the storage/partitions of the LG G4 phones, and it seems all phones have different bootloaders, but only H815 has an unlockable bootloader. I tried to use adb and entered "adb reboot bootloader" command, but it didn't let me into bootloader mode. It just rebooted the phone... so my bootloader is locked.... and I want custom rom.

So I became curious, because the bootloader is stored in a partition in the flash memory, what would happen if I were to delete the H812 bootloader partition and replace it with the H815 bootloader partition through the dd command: https://www.computerhope.com/unix/dd.htm

The same dd command was used to flash the rootedsystem.img file in the root process: https://xdaforums.com/g4/orig-development/root-tmo-vzw-intl-variants-soon-root-lg-t3164765

Tell me please what could go wrong before I try this.
[G4 General] sdembiske:
Simple

: Hard Brick.

Suggest you check out steadfasterX's thread, read through the posts and then, pay attention to his later update posts and wait for him to complete the process ... before running off half-cocked thinking you've got it all solved ...

https://xdaforums.com/g4/general/bl-unlock-unlock-bootloader-proof-t3648288
[G4 General] steadfasterX:
Cross flashing firmware or bootloader gives you a high risk of hard brick your device.

It may work and it may not. Even if it works it may have site effects no one knows. It can increase your ARB which makes it impossible to go back leaving you with a possible unusable device. Well you can replace your mainboard to got back but fuses are physical blown and nothing can revert this.

Note:

The member big badass is known to trick ppl and was blocked for at least 2 times in the past bc of his behavior of misleading ppl. Unfortunately this is not enough as we can see today.
[G4 General] KennyG123:
Thread cleaned

Please stay on topic and do not attack each other

Do not flash firmware not meant for your device

Thank you all for your cooperation

Friendly Neighborhood Moderator
[G4 General] අධිරාජ (Adhirāja):
d

You have helped me very much. Thanks.

So for that, I am going through all your posts on this forum and pressing thanks button on each and every one of them :highfive::good::cool:
[G4 General] අධිරාජ (Adhirāja):
Hi Guys. I noticed the other variants also have a feature to create multiple user accounts which this version does not have. See here: https://forums.androidcentral.com/l...ulti-user-g4-also-what-happened-notebook.html

Fortunately you can install an app called SwitchMe Multiple Accounts from here: https://play.google.com/store/apps/details?id=fahrbot.apps.switchme

And it does all the same things. Hope this helps
[G4 General] අධිරාජ (Adhirāja):
Guys i noticed something very strange...

When I temove the back cover for the phone, directly above the Flash, it says "H810". To the right of the speaker is a secondary H810 label... can you guys also check yours and see if you also have it??

If its common to all, could it mean our variant is just a repackaged H810 ??
[G4 General] ReeS86:
My H812 has the same marking as you described above. I'm guessing they share the same plastic frame as the H810.
[G4 General] sdembiske:
It has no relation at all to the internal components or firmware installed. It appears to be what ever is on hand at the time of the model's production run - it is common to see this across different models from what I understand. The ONLY determining factor is what is stamped on your motherboard - and the only way to ascertain that is to open the phone up and check what is actually stamped on the motherboard.

If you have actually installed and used steadfasterX's SALT tool to backup your phone partitiond, you will notice that the GPT Compatability is noted as H811 for the H812. There is a reason for this ... see post # 542 and # 543 in the FWUL thread.
[G4 General] අධිරාජ (Adhirāja):
Ok thanks I will definitely do a salt backup:good:

---------- Post added at 12:56 AM ---------- Previous post was at 12:54 AM ----------

Dont all G4 variants have the same hardware besides the motherboard?

Anyways.. I get the point.. It has to do with the component manufacturers... same people who make back covers for the h810 probably ship it here too...
[G4 General] ReeS86:
Hey for those of you who have the H812 and have rooted using steadfasterX's UsU, and have installed the v29A official Nougat rom for your G4. Can you check and see if the FM Radio apk is installed and if it works (assuming your sound is also working)? I see that it's included in the system image in the zip, but haven't had a chance to unlock using UsU myself.
[G4 General] sdembiske:
I'll stand corrected on this if proven otherwise but my understanding is the V29A official Nougat rom was ported only to the H815 and H818P. The GPT compatability for the H812 in SALT is for H811 roms. It is possible perhaps that it could be done but my understanding it would require some partition modifications and the risk of a hard brick could show an exponential rise.

Additional consideration perhaps: steadfasterX in his bootloader unlock thread has repeated 3 times, the following:

Do not flash any KDZ / TOTs or any ROM containing a bootloader stack (like v29a pure does) ! You WILL loose unlock and may hard-hard-brick your device (at least HARD BRICK)!
[G4 General] ReeS86:
Ah sorry for not being clear on my first post. As sdembiske states above DO NOT flash any KDZ or full stock rom from LG after unlocking using USU.

What I was referring to is the zip that steadfasterX posted in the UsU thread FAQ item 16 which states for any model, any ARB. I see from the UsU thread many H812 users have flashed this and have mixed results with performance of sound, video and cell service.
[G4 General] sdembiske:
No problem - understood now. I hadn't followed the link in the FAQ for the relevant post.

If you haven't already, maybe post it to his bootloader unlock thread for any H812 owners that might have given that particular one a shot or ask steadfasterX directly for h812 members that might have tested it for him or whoever developed it.
[G4 General] අධිරාජ (Adhirāja):
Hi ReeS86. I am also wanting that FM radio.I think they have to "port" H815 roms for the H811 ( H811 has the same GPT compatibility as H812)...

:):cool:

Bro, do you think its possible to port a H815 rom for H811 (but smooth enough to work

flawlessly

on the H812)????

Also, do you know how to check the antirollback of a

stock based non-kdz ROM

?? I found steadfasterx's guide here: https://xdaforums.com/showpost.php?p=73950915&postcount=109

But that is only for KDZ, which is useless after USU unlock.

Thanks:)
[G4 General] ReeS86:
It seems that the issues with the stock LG Nougat v29 are because users had accidentally flashed the wrong zip which contained the full N bootstack for the H815 that appears to cause issues with the H812. Hey [MENTION=5114553]doomanix[/MENTION] , you noted in the UsU thread that you were able to get the LG v29A Nougat rom working right? Can you try and see if the FM radio app works as intended? I'm guessing it won't since most of the firmware other than kernel, drivers and system image are still the original H812 ones.
[G4 General] අධිරාජ (Adhirāja):
If it doesnt work, steadfasterx said salt v4 will support flashing KDZ files. So bro, what you can do is flash H815 International Nougat KDZ. :)
[G4 General] sdembiske:
This looks like the guy to ask re: the FM app. Refer to post # 249 by doomanix in steadfasterX's thread. He's an H812 owner with the rom in question.

Post your question to him there ...
[G4 General] අධිරාජ (Adhirāja):
Ok done
[G4 General] doomanix:
Got the mention [MENTION=1258758]ReeS86[/MENTION]. FM app works; doesn't force close or anything and will scan for channels with the headphones plugged in but I don't get any sound. (sound works for the ROM just not the FM app)
[G4 General] අධිරාජ (Adhirāja):
Hmm.... was this the stock nougat??
[G4 General] අධිරාජ (Adhirāja):
Phone automatically rebooting...

Hi guys:

It has come to my attention lately that my device is not functioning as it used to. I've been experiencing lagging and sometimes the phone would freeze or suddenly and randomly reboot itself even while running non CPU intensive tasks. It only reboots once at a time, unlike the bootloop issue however. I've experienced 2 sudden reboots in the past 2 weeks or so.

CPU and RAM usage is normal.. Didnt install any resource intensive apps lately... I cleared cache, replaced the battery, but it suddenly rebooted once after all that too....

Any help please?
[G4 General] ReeS86:
It sounds like maybe your phone has some bad app or configuration that has happened over time. Have you tried completely wiping it / factory reset? That will be an easy way to tell if it is something caused by software or if the hardware is failing.
[G4 General] අධිරාජ (Adhirāja):
Thank you ReeS86. I will move forward with your suggestion. By the way, would you recommend just re-flashing the KDZ or doing a TWRP wipe and restore? Which one would format a greater number of partitions?
[G4 General] ReeS86:
Well first how do you have access to TWRP on your H812? If you have unlocked using UsU you cannot flash a KDZ ever again or it will break your phone (see steadfasterX post in UsU thread). For wiping with TWRP you can follow the FAQ item ZZZ in the same UsU thread.

If you havent unlocked by UsU and have TWRP via steadfasterX's FiSH hack then flashing a KDZ in LGUP would be the simplest route. Keep in mind that you'll have to re-root to restore any backups after flashing KDZ

Either way don't forget to back up all of your personal files and apps first!