yashsingh1/xdaforums huggingface dataset:
[G4 Q&A, Help & Troubleshooting] Jsusgarcia179:
Hey everyone,

Recently my LG G4 has fallen into a pretty dire state. While running a stock-based custom rom and 2.8.7.1 twrp, I attempted to install the experimental Multirom build found

here: http://xdaforums.com/g4/development/mod-multirom-v33-lg-g4-t3414496

I was able to flash the multirom recovery img, but from then on I only recieved error 7s when trying to flash multirom or anything else. After a few days of use, with constant

reboots at random, my phone eventually stopped booting and got stuck in a bootloop. Recovery is no longer accessible. When I load LGUP, my device is "unknown". I tried using LG

Bridge as well and it recognized my phone and "updated it", but it has not made the phone bootable or recognizable in LGUP. I am seriously concerned that my phone is at its end...any

suggestions are welcome.
[G4 Q&A, Help & Troubleshooting] Jsusgarcia179:
WELP...probably not the best place to post and expect immediate help.
[G4 Q&A, Help & Troubleshooting] lept_2014:
Use 'LG Flash tool 2014' to flash a Lollipop KDZ.
[G4 Q&A, Help & Troubleshooting] Jsusgarcia179:
Hey there thanks for the suggestion! My phone was on MM though and I tried an MM kdz to no avail. Would an

LP KDZ really be the solution? I'm worried it could brick the phone :eek:
[G4 Q&A, Help & Troubleshooting] lept_2014:
'LG Flash tool 2014' doesn't work with MM, so you must use a LP KDZ.
[G4 Q&A, Help & Troubleshooting] Jsusgarcia179:
Okay thanks so much for your suggestions! I will report back here with the results.

UPDATE: The LP KDZ didn't yield better results.
[G4 Q&A, Help & Troubleshooting] ILIVE4HEAD:
so I have software version h81220u so this means that the lollipop version i would need would be the h81210u? I couldn't use any other h81210x?
[G4 Q&A, Help & Troubleshooting] Jsusgarcia179:
Well I guess I am out of luck...can't believe I murdered my G4.
[G4 Q&A, Help & Troubleshooting] CardinalDeath:
I guys how is everyone i used to have my g4 rooted before but had to turn it in but now im not rooted on 20o do i need to wait for another update or can i use the kdz method to root..with 20i will it still work
[G4 Q&A, Help & Troubleshooting] Scruffy1024:
Did not work for me. Renaming kdz file to tot caused LGUP to report 'tot file invalid [1]'. Doing as OP suggests, and just going to upgrade, selecting kdz file, and restarting LGUP to REFURBISH with kdz file did work.
[G4 Q&A, Help & Troubleshooting] 6equjs:
I followed all the instructions, upgrading LP to MM, ticked upgrade, chose the proper file, device was recognized, etc.

Im stuck at "sending image" at 9%, and reflashing doesn't change the problem. Am I forgetting something?
[G4 Q&A, Help & Troubleshooting] Bryanx86:
Will this work flashing to the lg k8 us375 us cellular?
[G4 Q&A, Help & Troubleshooting] bender_007:
Where did you read you should rename kdz file to tot? You should write *.kdz in place where *.tot stands.

Poslano sa mog SM-G930F koristeći Tapatalk
[G4 Q&A, Help & Troubleshooting] medo18:
My LG G4 H915 is bricked.

I have Download mode but my device not detected in download mode. I have G2 is working very well but my G4 not working. Can you help m

I have installed a new ROM then I get balck screen and my G4 is restarting every 10 sec.

Can someone help me.
[G4 Q&A, Help & Troubleshooting] bender_007:
Was it detected in download mode at some time? Maybe it's only driver issue? Check device manager and connect the phone to computer while in download mode.
[G4 Q&A, Help & Troubleshooting] medo18:
Thank you for you answer, anyway it's nothing happen, please help me, I have tried everything .

I have installed the driver for LG G4 in other PC too but it doesn't work.
[G4 Q&A, Help & Troubleshooting] bender_007:
Try changing the cable (if the download mode is showing up correctly), something has to appear in device manager (leave the device manager open while connecting, it's possible the window will flash when refreshing and detecting a new device)

Any screenshot of device manager?
[G4 Q&A, Help & Troubleshooting] medo18:
I used the original cable for LG G4.
[G4 Q&A, Help & Troubleshooting] Dark_AJ9:
LGUP Not working here... installed both files.

Then app says "App cannot be started correctly (0xc000007b). click ok to close it.
[G4 Q&A, Help & Troubleshooting] Dark_AJ9:
No?

Enviado desde mi LG-H955 mediante Tapatalk
[G4 Q&A, Help & Troubleshooting] Hiyaslalabs:
Unknown device model

How am I gonna modified my device thru cust partition prop if I came from secure booting error? Is there any chance that LGUP will see my device? keeps popping device model unknown(com10: Cloudyg2 3.3) but the previous I installed was a CAF MM Paranoid ROM. Thanks for the help. :(
[G4 Q&A, Help & Troubleshooting] raselrana:
Lg g4 (h815t)

hi

my lg g4 (lg h815t) KDZ install ok but just lg logo and restart.Plz Help Me:crying:
[G4 Q&A, Help & Troubleshooting] ZemoDroid:
I'm sorry if this is not the right place to ask but I can't find a dll file for LG K10 (K420n) and without it I cant use LG UP. Anyone have it?
[G4 Q&A, Help & Troubleshooting] nipun1110:
HELP NEEDED!!!!

When I connect my H815T, LGUP shows "unknown" on left side and "7 HD 6.1" on right side even after I flashed stock KDZ for my phone via LG Flash Tool. I also uninstalled and installed LGUP several times but didn't help. Mind it, my device has bootloop issue. So is there anyone who can help me to detect my device in LGUP so that I can try the ILAPO Fix. Thanks in advance. It will seriously help me.
[G4 Q&A, Help & Troubleshooting] nipun1110:
Could u solve yr problem? I am in a similar situation.
[G4 Q&A, Help & Troubleshooting] 20degrees:
I've tried and tried and at 9% I get error codes on LG G4. Trying to do a refurbish option.
[G4 Q&A, Help & Troubleshooting] nipun1110:
Seriously??? No help???? :(
[G4 Q&A, Help & Troubleshooting] ZemoDroid:
You have to find a .dll file for your device.
[G4 Q&A, Help & Troubleshooting] nipun1110:
Then what?
[G4 Q&A, Help & Troubleshooting] nipun1110:
So I have gone through every single page of this forum. What I found is, lots of reports of "unknown model" problem and a handful of them got solution by the provided steps in OP. But that solution is only applicable for devices that are up n running or bootloader unlocked. But guys like me who have a bootloop device and locked bootloader are not getting proper help from anyone :(

Already I requested for a few times, but for the last time I am trying to elaborate.

Situation: LgUp showing "unknown model" and "7 HD 6.1 Rom" (android version 5.1, never updated to MM)

LgBridge detects as H815T

G4 Model: H815T

Target: To make my device detected in LgUp so that I can try ILAPO Fix.

Things I tried:

1. Uninstalling LG drivers, Lg Bridge and LGUP utilities, then restarting PC (using Windows 10), then installing LG Bridge > Lg Mobile Driver v3.14.1 > LgUp DLL > LgUp Store.

2. Uninstalling other mobile drivers also

3. Using different PC, different USB port

4. Flashing stock H815T_10B.kdz via Lg Flash Tool 2014 (both in normal and cse)

5. Flashing international stock H815_10E.kdz (both in normal and cse)

[N.B. while flashing kdz files, everytime it shows some error, but ultimately finishes flashing in both Flash Tool app in PC and Download Mode in mobile.]

6. Hard resetting the phone from recovery.

Now please tell me what else can I do? Someone please give some solution. Thanks.
[G4 Q&A, Help & Troubleshooting] ZemoDroid:
Search for a file called LGMH815T_DLL.msi

It will install thr necessary dll files inside LG UP folder (C:\Program Files (x86)\LG Electronic\LGUP\model) and then it should detect your phone. If you will find a .msi file without T in the filename thats okay. You could also try to hard reset your phone.
[G4 Q&A, Help & Troubleshooting] nipun1110:
Hey Mr,

Thanks a lot. But trust me, I am trying hard to find that DLL, but not being able to. Instead, this website http://www.mylgphones.com/download-lg-up-software (screenshot below) is saying the DLL that comes with LGUP installation files, is the DLL for my device and also any other G4 which is based on SD810 (although G4 has SD808, I don't know why they say that). So will you pleaseeeeeeee help me find the DLL? Sorry to bother but it will help me a lot. Thanks again.
[G4 Q&A, Help & Troubleshooting] ZemoDroid:
Once I find it I will attatch the file to the post. If it's a .msi file just double click and it will be placed in the location I mentioned. If it's a .dll file you will have to manually place it there.

Personally I think this guide will be way more usefull:

http://xdaforums.com/lg-k10/how-to/guide-unbricking-flashing-firmware-due-t3380529
[G4 Q&A, Help & Troubleshooting] nipun1110:
Thank u so much for giving me hope. Thing is the forum that u have mentioned, is not gonna be helpful for me because I already updated my G4 through LgBridge into MM, but still it's showing "unknown / 7 HD 6.1" in LGUP.
[G4 Q&A, Help & Troubleshooting] bender_007:
If its only dll you have also to manually add values and keys to the registry
[G4 Q&A, Help & Troubleshooting] ZemoDroid:
LG UP and LG Bridge are two completlly separate programs and such one can detect a phone while the other can't. Just give it a try and remember to click on "update error recovery" blue text and NOT on the main "software update" button. Also if you have followed the aforementioned guide and still failed you might try completly turning off your phone and going into hard reset menu to fully wipe the /data partition (LG Bridge dosent seem to do it for some reason). This worked with my phone and since they have similiar chipsets it might work for you as well.

PS:Just like the previous user said you have to go to registry editor and add all the necessary values. I'm afraid I cant help you there. At least not until I learn what values to add.
[G4 Q&A, Help & Troubleshooting] bender_007:
You can find my registry modifications on lg g4c thread and alter it. Not on laptop currently so can't do it for him
[G4 Q&A, Help & Troubleshooting] nipun1110:
I am really grateful to u that u r trying to help me. I am going to give it a shot. But I hope u understand that my bootloop is not due to MM, it's due to hardware failure and my whole intention is just to make my device normally detected in LGUP so that I can try the ILAPO fix. Thanks. I will keep u posted.

---------- Post added at 03:20 AM ---------- Previous post was at 03:11 AM ----------

Hey man thank u so much that u two are the only guys who are actually trying to help me.

---------- Post added at 03:23 AM ---------- Previous post was at 03:20 AM ----------

@ZemoDroid Hello, I followed that guide u mentioned. But what I think is, it's for those who cannot somehow update their phones. But I didn't have that problem. In fact last night I updated my phone to MM through LgBridge. right now when I was trying LgBridge according to that guide, it seems that it is downloading the exact same file that I downloaded last night (both are 1.62 gb). so do u still think I should continue with that?
[G4 Q&A, Help & Troubleshooting] ZemoDroid:
Yes and remember to put your device in download mode beforehand. The difference between normal update and emergency update (which is used in that guide) is the latter wipes/formats all the partitions (expect for /data, at least in my case). And remember that if this guide won't help you do what I told you about hard reset. HR will definitely wipe /data which I am in 90% sure is the cause of bootloop.
[G4 Q&A, Help & Troubleshooting] nipun1110:
Hey man, please one thing remember that, this is a bootloop due to hardware fault. I hope u know about this issue that has been plaguing G4s. And yes the last time also, I updated it in download mode through LG Bridge. So I think this isn't gonna help because last night also it didn't help. So now I am hard resetting the phone, but it's been very long since I pressed the second "Yes" button. Still waiting for phone reboot. Worried.
[G4 Q&A, Help & Troubleshooting] ZemoDroid:
Well it should not be longer than 20 minutes. If this is a hardware fault then I am not sure if I can help. I don't have your device (only one with similar chipset). You should send it to LG.
[G4 Q&A, Help & Troubleshooting] emdroidle:
Is it known which versions of Windows LGUP runs on? Since it was available, I was trying to run it in a Windows XP VM, but was getting an error of the DLL not being compatible with the phone. This is even though I'm pretty sure I've got the correct DLL. The OS version incompatibility seems an obvious cause, so is this known?

(I'm not using Windows on a day to day basis, so even though this olde is blatantly insecure it is meant to be available for these few tasks that I have no other alternative)
[G4 Q&A, Help & Troubleshooting] 20degrees:
I couldn't get it to work on Windows 10. I got it to work once on Windows 7 though.
[G4 Q&A, Help & Troubleshooting] emdroidle:
Doesn't actually answer the question, though there is also a few more general questions lurking here. Which OSes is LGUP known to work on? Which OSes is LGUP known not to work on? Which OSes is it not known whether LGUP works on them or not?

Currently the list looks like:

Windows 98: unknown

Windows 2000: unknown

Windows XP: single report of not working in VM

Windows 7: single report of working

Windows 8: unknown

Windows 8.1: unknown

Windows 9: unknown

Windows 10: single report of not working

Is this in fact a tool from LG? (I'm guessing yes it is, but I lack certainty) What are their support claims like?

The thread opening message should likely be edited to state LGUP_8994_DLL_Ver_0_0_3_23 is for the G4 only. Instructions for many other LG devices point here, and those devices will need a different DLL file. Depending upon the thread opener, might be worthy of mentioning the longest list of KDZ files for the LG V10 is here.
[G4 Q&A, Help & Troubleshooting] @CallMe_Y_C:
i'm not seeing wht i should do on this tool

i don't have many options

what is it supposed to look like?
[G4 Q&A, Help & Troubleshooting] rockyjacky:
getting error on downgrade

I am getting error on downgrade. Errors pops up that antirollback version smaller than current version of device.
[G4 Q&A, Help & Troubleshooting] Bryanx86:
Have you tried lgBridge connecting your phone to PC only after entering download mode, and also only after ensuring the drivers were installed also? This was the way I got lg k8 out of bootloop after rooting it, was to just lgBridge do all the work, downloading kdz firmware, and installing it onto k8...
[G4 Q&A, Help & Troubleshooting] lasha117:
i must unlock bootloader for this?
[G4 Q&A, Help & Troubleshooting] shakeyabooti:
No
[G4 Q&A, Help & Troubleshooting] shakeyabooti:
OTA will work fine..... the kdz file you install will take you back or upgrade you to a stock ROM
[G4 Q&A, Help & Troubleshooting] RealCaracas:
Thank you!
[G4 Q&A, Help & Troubleshooting] shudoha:
go on lgviet.com and you will find the good kdz or TOT file
[G4 Q&A, Help & Troubleshooting] juan272:
Hi all!!

I´m a recent LG G4 user, so I´m a little lost with all this....

I have an LG-H815AR... what can I do with this version?? I can flash any H815 version LP or MM???

I have to flash another modem or anything before?
[G4 Q&A, Help & Troubleshooting] somboons:
Can I use with others LG device?
[G4 Q&A, Help & Troubleshooting] schafi03:
Maybe, if your device will be recognized by this tool
[G4 Q&A, Help & Troubleshooting] katsaplias:
Really great software... I was wondering if I can flash not just stock roms but also modified

Στάλθηκε από το C6603 μου χρησιμοποιώντας Tapatalk
[G4 Q&A, Help & Troubleshooting] krebs01:
I've just upgraded and now I have the double of crapware.
[G4 Q&A, Help & Troubleshooting] kevtrysmoddin:
How so ?
[G4 Q&A, Help & Troubleshooting] shakeyabooti:
That makes no sense cos when you re-install most LG bloatware is optional
[G4 Q&A, Help & Troubleshooting] nothingfacey:
Did anyone have the last rom androdi 6???? maybe the Korean rom F500L20C_00.kdz? where i can donwload it?
[G4 Q&A, Help & Troubleshooting] krebs01:
I whish it was no sense, but as you can see in the picture (LINK) I have 4 new apps that I can't unistall aand a brand new roaming crap. I have the Korean version F500L.

https://drive.google.com/file/d/0BzOp_5qQzuBlcHNGYnJIdDhTS2s/view?usp=docslist_api

---------- Post added at 06:06 PM ---------- Previous post was at 05:57 PM ----------

don´t do that
[G4 Q&A, Help & Troubleshooting] galshahaf:
so I'm stuck on bootloop for about a month now and lg flash tool didn't help, I want to try this one but the refurbish option only allow TOT files, which I can't find for my h815(twn, if it matters), only kdz. anyone have a like? or any way of using it to solve the brick?
[G4 Q&A, Help & Troubleshooting] shakeyabooti:
Hey....read the section on the OP how to do a full wipe....this will help you out hopefully
[G4 Q&A, Help & Troubleshooting] corrx:
Just wondering: I have a brand new h815. I haven't unlocked my bootloader yet nor I have flashed custom ROMs/kernels/etc. Also I don't have root (of course, I just got the new phone lol).

Let's say I upgrade to MM with this method, then I unlock the bootloader and install TWRP. Then I wipe cache/data and try to flash CM13...

Well, I guess the process should work, right?

It sounds easier than using these methods: 1 and 2.
[G4 Q&A, Help & Troubleshooting] juan272:
can i flash a custom rom with this method ???
[G4 Q&A, Help & Troubleshooting] adamelphick:
My G4 shows up as Unknown too... installed the DLL and the LGUP (both show on my Programs and Features). I have Windows 10 64Bit. LG Bridge sees the phone just fine.

Any help appreciated.
[G4 Q&A, Help & Troubleshooting] shakeyabooti:
Try leaving your phone connected via usb to the computer, leave LGUP running then restart your phone
[G4 Q&A, Help & Troubleshooting] rockyjacky:
ILAPO works on lollipop . However my device is on 6.0.1. I am unable to downgrade . Lgup throws error antirollbackversion in device is higher. Any solution to downgrade so that I can give try to big man disable tool...
[G4 Q&A, Help & Troubleshooting] phooeyman:
Whats the most upto date version KDZ for UK G4 please non branded??
[G4 Q&A, Help & Troubleshooting] Daytona675tr:
How to flash kdz lg k430dsy ??

If yours have K430DSY DLL File please give me
[G4 Q&A, Help & Troubleshooting] xurena:
Hi,

My phone is G4 H818P. Using LGUP, the phone reboot and start in Firmware Update mode. Then LGUP gives me this error :

"Error Code = 0x2000, Can't decide current device mode."
[G4 Q&A, Help & Troubleshooting] bender_007:
Try booting into download mode manually, then connect to pc and start lgup
[G4 Q&A, Help & Troubleshooting] Gizmoh:
My h815 won't get recognized by the LGUP Tool :(

Is just listed as Model "unknown" COM Ports "[COM7, 7 HD 6.1]" since i'm on a custom rom.

I tried on a different pc with different os and different COM Ports, no effort at all :(

Is there any other way to flash the file? Or any way to change to model name just with download mode?

Thanks in advance

Gizmoh
[G4 Q&A, Help & Troubleshooting] bender_007:
can you enter twrp or the rom itself at least?
[G4 Q&A, Help & Troubleshooting] Gizmoh:
No, just fastboot mode. Every attemp to ender twrp ends in bootloop
[G4 Q&A, Help & Troubleshooting] bender_007:
i would try to get a stock cust partition, fastboot and flash

fastboot flash cust cust.bin (or img or whatever it´s called)

but in your case it might be enough to:

fastboot boot twrp.img (if your device is unlocked it will boot the twrp and you could simply push a new rom and flash it)
[G4 Q&A, Help & Troubleshooting] uchihakyo:
Hey everyone,

I have a h812, I downgrade from MM to LP.Everything was fine until I tried to take a picture. By my surprise, the focus has stopped. I've tried different apk. I've tried three different LP version( Rogers, Videotron and Telus).

At this point I was expecting a hardware problem. Although, when I upgraded it to MM. Surprisingly, the camera came back 100%.

Now my question is, Am I the only one that experienced this ? I've tried the downgrade 3 times. Same result.

Did I miss something ? probably something related to modem.img, I guess.

Thank you in advance.
[G4 Q&A, Help & Troubleshooting] Velkyrix:
My phone isnt bricked or anything, but i want to flash a kdz.

Problem is, when my device is on download mode, LG UP DOES detect it, but says its on "Standby". So I can't take any action.

Please help, V20D is crap.
[G4 Q&A, Help & Troubleshooting] DeusDivine:
tmobile 20o varient, from what i can gathere ther is no way to fix my bricked phone yet huh.
[G4 Q&A, Help & Troubleshooting] Edgedancer:
Do you mean when it reboots? You can load LGUP from when the phone is just in regular mode. You just need to allow usb access
[G4 Q&A, Help & Troubleshooting] Velkyrix:
Fixed it anyway, thanks :)
[G4 Q&A, Help & Troubleshooting] meatpuppet007:
? i have the vs985. installed the lg bridge & the lgup ,with the dll installed first. the phone when plugged in(proper drivers) says unknown model,but com port says vs985. Ideas? because i want to downgrade to 5.1 so i can root and twrp. any help is always appreciated.
[G4 Q&A, Help & Troubleshooting] draskome:
Ive used LGUP successfully few times without any issues on my H815, but few days ago I've flashed stock 20i ROM, and now when I start LGUP it recognizes phone, but I don't have any option available, just an empty window (screenshot attached).

Does anyone have idea how to solve this?

UPDATE: After performing factory reset, LGUP finally started working properly. I cant see any logic in that, but it worked
[G4 Q&A, Help & Troubleshooting] xurena:
LGUP - Flashing Fail

Hi, My phone is LG G4 H818P. Tried using LGUP to downgrade from MM to LP.

But LGUP gave me error 'Flashing Fail'. I tried on all USB ports and used diffirent cables on my dell vostro 1200 laptop running windows 7, also tried all USB ports on my desktop PC (windows 7).

All methods gave me this error:

LG Flash Tool 2014 (build 03/07/2014) : after 9% -- > Upgrade stopped due to an error

LGUP : after 9% --> "flashing fail"

There is something comes up in the text box on the phone for 1 second though as in this photo attachment. So I guess USB is connected properly.

Anyone knows what's wrong?

update: Turns out my kdz file is corrupted. Downgrading and flashing worked after re-download the kdz file.
[G4 Q&A, Help & Troubleshooting] bkpaokfc:
Hey guys i wanna ask something abou LG UP , is there any chance to use it for LG Zero? I can't find an .msi and a dll for that model, I just want to downgrade from 6.0 to 5.1.1 , is there any chance ?
[G4 Q&A, Help & Troubleshooting] elrosid:
unknown device. my device is soft bricked/bootlooped after i modified build.prop.... i use H818p. so i went to download mode and try to re-flash the G4 but it didnt work because the device is unknown. any advice would be appreciated
[G4 Q&A, Help & Troubleshooting] lordsolrac2:
1-Doubt it but is there a Linux version?

2-Would it work with a H810(PR)?
[G4 Q&A, Help & Troubleshooting] SandyKick:
can any one help me out ? i am trying to upgrade my G4 from LP to MM. Currently on H81510H, i have tried flashing with 2 different MM KDZ's V20D & V20i but couldn't succeed. LGUP throwing some error at 9% stating that "tot anti rollback version is smaller than device version"

reply please thanks
[G4 Q&A, Help & Troubleshooting] FaserF:
my d855 is being recognized as h815 and while flashing i am getting an error :(

(Stock MM)
[G4 Q&A, Help & Troubleshooting] garoadran:
Hi guys,

I'm getting the "contact the system administrador" (required information cannot be found) error. Do you know how to fix this?

Thanks in advance !
[G4 Q&A, Help & Troubleshooting] Wolf2231:
This happen to me when I try to downgrade to LP. Any updates from you.
[G4 Q&A, Help & Troubleshooting] themaskofwraith:
Hi what if i cant change the build.props like you did to fix unknown model issue. Thanks
[G4 Q&A, Help & Troubleshooting] Wrightperspective:
Having problems with this showing my device as unknown device. I have the T-mobile LG G4. What do I change in build.prop to fix this for ro.lge.swversion and ro.lge.swversion_short ?

I searched and found that I had to uninstall and reinstall my drivers on my pc and now LGUP will recognize my device. Wooooo!