Long story short -
Tmobile G4, tried to root it, bricked; authentication error #11.
Got it to boot up to the download mode, followed this guide (http://forum.xda-developers.com/g4/general/guide-lg-g4-stock-firmware-to-stock-kdz-t3107848); got the Sever Connection error, everyone said that was fine and to let it run... I did.
The LG tool got to 100%, the phone turned off and well... it's never turned back on.
Windows gives me a chime when I plug it in but nothing happens on the screen, I plug it into the outlet and it wont boot up, remove the battery just incase, still no dice.
Did I totally kill this phone?
EXACTLY what happened to me. I'll be following your thread!
ThatsMajor said:
Long story short -
Tmobile G4, tried to root it, bricked; authentication error #11.
Got it to boot up to the download mode, followed this guide (http://forum.xda-developers.com/g4/general/guide-lg-g4-stock-firmware-to-stock-kdz-t3107848); got the Sever Connection error, everyone said that was fine and to let it run... I did.
The LG tool got to 100%, the phone turned off and well... it's never turned back on.
Windows gives me a chime when I plug it in but nothing happens on the screen, I plug it into the outlet and it wont boot up, remove the battery just incase, still no dice.
Did I totally kill this phone?
Click to expand...
Click to collapse
This is a classic hardbrick. I am guessing you had 10n on phone and the kdz was for 10h. The downgrading of software is a nono on lg g4. At the moment, lg is the only 1 who can fix this.
MrSteelX said:
At the moment, lg is the only 1 who can fix this.
Click to expand...
Click to collapse
So he just has to take it to the service centre and they will fix it ?
Yes
MrSteelX said:
This is a classic hardbrick. I am guessing you had 10n on phone and the kdz was for 10h. The downgrading of software is a nono on lg g4. At the moment, lg is the only 1 who can fix this.
Click to expand...
Click to collapse
I downgraded from 10d to 10c without problems on an H815 after exFat support broke. What exactly is not downgradeable (system, recovery, boot, bootloader? My guess is the bl) and which variants can't be downgraded?
Nevermind, just found this -> [PSA] **WARNING** DO NOT TRY TO DOWNGRADE YOUR G4 BOOTSTACK (in USA at least)
@ThatsMajor I know it doesn't help, but for the future, make shure you do enough research. This could've been avoided.
ThatsMajor said:
Did I totally kill this phone?
Click to expand...
Click to collapse
Let us know how it goes at the service center.
if they bring it back then you did not 'kill' your phone
Related
I'm on T-Mobile, and I upgraded from a G3 to a G4. Ordered the G4 from T-Mobile yesterday, got it a few hours ago. Earlier today, I went through the restore process for the G3 using the LG Flash Tool (essentially following these steps here). That all went fine. Shortly after that, without thinking, and without closing the LG Flash Tool, I plugged my G4 into my computer to charge it. I got confused for a moment when I noticed it restarting. The Flash Tool had picked it up, and was setting up to push the G3 firmware to it. I panicked, and unplugged the phone from the computer, right as the phone went to the "Firmware Update" screen. Now, whenever I turn it on, it just goes straight to "Firmware Update". Won't enter recovery mode, etc, etc... No matter what, just "Firmware Update".
Any help?
Simonzi said:
I'm on T-Mobile, and I upgraded from a G3 to a G4. Ordered the G4 from T-Mobile yesterday, got it a few hours ago. Earlier today, I went through the restore process for the G3 using the LG Flash Tool (essentially following these steps here). That all went fine. Shortly after that, without thinking, and without closing the LG Flash Tool, I plugged my G4 into my computer to charge it. I got confused for a moment when I noticed it restarting. The Flash Tool had picked it up, and was setting up to push the G3 firmware to it. I panicked, and unplugged the phone from the computer, right as the phone went to the "Firmware Update" screen. Now, whenever I turn it on, it just goes straight to "Firmware Update". Won't enter recovery mode, etc, etc... No matter what, just "Firmware Update".
Any help?
Click to expand...
Click to collapse
You done goofed OP. i dont think g3 method works on G4 from what ive heard. can you try to hard reset the phone? or if not connect to computer and use the terminal or ADB(i think its called) to restart to boot to the recovery menu
Phurkus said:
You done goofed OP. i dont think g3 method works on G4 from what ive heard. can you try to hard reset the phone? or if not connect to computer and use the terminal or ADB(i think its called) to restart to boot to the recovery menu
Click to expand...
Click to collapse
Well, it has the same download mode as the G3 (which is unfortunately the only thing it will boot into), so technically I should be able to flash the firmware the same way, only problem with that is, because it's so new, the .dll and .tot files aren't available anywhere.
I tried a hard reset from the phone, didn't work. I couldn't get ADB to pick up the device (since it only boots into download mode), so I couldn't reboot into recovery via ADB
Took it into a T-Mobile store, they couldn't do anything, as expected. Notated my account, and said to call. New phone was ordered and being sent out to me, should have it Monday
Simonzi said:
Took it into a T-Mobile store, they couldn't do anything, as expected. Notated my account, and said to call. New phone was ordered and being sent out to me, should have it Monday
Click to expand...
Click to collapse
that's good news, no sad face required. last time i did something that crazy it was me, my laptop, and my phone in a room for 36 hours with every software tool available. lol.
Read carefully on http://www.androidbrick.com/
Hi,
Read carefully this web site for helping http://www.androidbrick.com/
http://www.androidbrick.com/unbrick-all-qualcomm-snapdragons-from-qualcomm-hs-usb-qdloader-9008-if-you-have-the-right-kind-of-rom/
Simonzi said:
Took it into a T-Mobile store, they couldn't do anything, as expected. Notated my account, and said to call. New phone was ordered and being sent out to me, should have it Monday
Click to expand...
Click to collapse
well at least your having it replaced. did the replacement cost anything?
sorry theres no fix to this right now. but i think its a little too early to mess with the G4
You have to restore you LG G4 to stock ROM.As your device is bricked you can't Flash via recovery.Download & Install LG Flash tool on your PC.Then download LG Stock Firmware according to your device model number.Then Flash via LG Flash tool.Below i share some helpful links
LG G4 Stock Firmware (Flashing Guide)-->>http://forum.xda-developers.com/g4/general/guide-lg-g4-stock-firmware-to-stock-kdz-t3107848
Another Guide-->>http://rootmygalaxy.net/unbrick-lg-g4-with-lg-flash-tool/
Hope this will help you and others facing this issue
Simonzi said:
Took it into a T-Mobile store, they couldn't do anything, as expected. Notated my account, and said to call. New phone was ordered and being sent out to me, should have it Monday
Click to expand...
Click to collapse
Actually there was no need to go to the store and get a new phone
You can easily flash G4 KDZs via LGUP, if you're stuck in download mode. Easiest game of your life. Sorry, that you had a lot of trouble, but keep in mind, that there's a way to get out of bootloops and such 99% of the time (well in fact 100% if it's a software problem). For future problems just check this thread. Easy to use, easy to get out of bootloops. Cheers
Follow_and_Feel said:
Actually there was no need to go to the store and get a new phone
You can easily flash G4 KDZs via LGUP, if you're stuck in download mode. Easiest game of your life. Sorry, that you had a lot of trouble, but keep in mind, that there's a way to get out of bootloops and such 99% of the time (well in fact 100% if it's a software problem). For future problems just check this thread. Easy to use, easy to get out of bootloops. Cheers
Click to expand...
Click to collapse
Thanks. But this was back in May, about 24 hours after it launched in the US. KDZ's weren't available then. Otherwise I would have done exactly what you said
Simonzi said:
Thanks. But this was back in May, about 24 hours after it launched in the US. KDZ's weren't available then. Otherwise I would have done exactly what you said
Click to expand...
Click to collapse
Oh sorry! I'm a bit late then :laugh: Didn't see the date.
Hi, I have cynogen installed and all was working fine until this morning, noticed my phone appeared to be booting up, gets to the blue circle then goes black and goes back to the LG screen, then repeats. Ive never been able to get into recovery by pressing the power and vol button and have tried numerous times with no joy. I know i can boot into recovery using ADB but the phones needs to be on doesnt it? Is there any other way that I can do this? Please help been with out my phone all day! Feel lost lol
foxguard said:
Hi, I have cynogen installed and all was working fine until this morning, noticed my phone appeared to be booting up, gets to the blue circle then goes black and goes back to the LG screen, then repeats. Ive never been able to get into recovery by pressing the power and vol button and have tried numerous times with no joy. I know i can boot into recovery using ADB but the phones needs to be on doesnt it? Is there any other way that I can do this? Please help been with out my phone all day! Feel lost lol
Click to expand...
Click to collapse
you could do 2 things.. one download KDZ use LGUP flash it and see if it was software related or something went wrong at flash.. if it keeps doing it then it has the bootloop issue.. and need to be sent back for repair....can you provide your first 3 digits of your serial number...?
raptorddd said:
you could do 2 things.. one download KDZ use LGUP flash it and see if it was software related or something went wrong at flash.. if it keeps doing it then it has the bootloop issue.. and need to be sent back for repair....can you provide your first 3 digits of your serial number...?
Click to expand...
Click to collapse
Thank you, will look at this kdz, is it simple to use?
it has been working fine on cynogen for last few months, nor changed anything
s/n is 508
foxguard said:
Thank you, will look at this kdz, is it simple to use?
it has been working fine on cynogen for last few months, nor changed anything
s/n is 508
Click to expand...
Click to collapse
yes it is its pretty easy... . file is big though... download kdz for you variant.. what android you are using.? MM or were you on stock LP.?
well i think since your phone is from 2015 august. that bootloop was supposed to be fixed by then. but newer phone are still getting hit by the bootloop.. but be aware unlocking the bootloader voids warranty.. some been lucky that phone were repaired some were denied repair..
raptorddd said:
yes it is its pretty easy... . file is big though... download kdz for you variant.. what android you are using.? MM or were you on stock LP.?
well i think since your phone is from 2015 august. that bootloop was supposed to be fixed by then. but newer phone are still getting hit by the bootloop.. but be aware unlocking the bootloader voids warranty.. some been lucky that phone were repaired some were denied repair..
Click to expand...
Click to collapse
Its been unlocked for ages and running the cyanogen rom, this is what is now stuck but was running fine. lg website doesnt have the programme any more, will hunt for it. so this will work even though phone doesnt boot?
foxguard said:
Its been unlocked for ages and running the cyanogen rom, this is what is now stuck but was running fine. lg website doesnt have the programme any more, will hunt for it. so this will work even though phone doesnt boot?
Click to expand...
Click to collapse
her it is..
http://forum.xda-developers.com/g4/help/lgup-install-kdz-mm-lp-t3249803
http://forum.xda-developers.com/g4/general/guide-lg-g4-stock-firmware-to-stock-kdz-t3107848
here are the links but i think you got the BOOTLOOP problem that many been affected..
NO ...... the only way for your phone to boot and gather all data is to flash a moddedKDZ.. but am not sure if it works on your variant..
if you have warranty send it back...but if they find out its unlocked they may deny repair.. you must pay for it...
this will make it boot but it will make it slow. as it disables the main cores...
https://www.reddit.com/r/lgg4/comments/45gfg2/dae_g4_series_msm_big_core_disable_tool_guide/
read this post..
http://forum.xda-developers.com/g4/help/lg-g4-stuck-bootloop-t3268734
raptorddd said:
her it is..
http://forum.xda-developers.com/g4/help/lgup-install-kdz-mm-lp-t3249803
http://forum.xda-developers.com/g4/general/guide-lg-g4-stock-firmware-to-stock-kdz-t3107848
here are the links but i think you got the BOOTLOOP problem that many been affected..
NO ...... the only way for your phone to boot and gather all data is to flash a moddedKDZ.. but am not sure if it works on your variant..
if you have warranty send it back...but if they find out its unlocked they may deny repair.. you must pay for it...
this will make it boot but it will make it slow. as it disables the main cores...
https://www.reddit.com/r/lgg4/comments/45gfg2/dae_g4_series_msm_big_core_disable_tool_guide/
read this post..
http://forum.xda-developers.com/g4/help/lg-g4-stuck-bootloop-t3268734
Click to expand...
Click to collapse
Going to give this a whirl now mate, thanks.
Hi,
I've searched over xda and google before but haven't found anything relevant so I've decided to post my own problem.
My G4 freezed unexpectedly while listening to music, I had to remove the battery to put it off.
But it never passed the LG logo again.
So, i've been stucked on this LG logo, looking for an answer and found about this hardware issue but I'm not certain to get the same error.
It's not a bootloop (even if I sometimes got stuck in bootloop while trying everything to revive my phone), I have been able to get to the download mode and TWRP (which I don't have anymore because I went back to stock using LGUP and LG bridge), even though I hardly get to the download mode now (I sometimes manage to do it though). I've also managed to save my data when I've managed to enter TWRP (plug in, remove battery, push volume down + power while putting battery in) which, people with hardware issue haven't, as far as I know.
I've tried everything I could and wouldn't even be able to describe it all.
Do you guys know how I could be sure if it's hardware or software related ?
Last try: update via Lg Bridge, succeed but still stuck on LG screen.
Thanks a lot !
Flash a lollipop kdz via LGUP, then try the ILAPO (works only with lollipop, no marshmellow) metod, there is a thread on xda.
There is a video on youtube too
alinnsts said:
Flash a lollipop kdz via LGUP, then try the ILAPO (works only with lollipop, no marshmellow) metod, there is a thread on xda.
There is a video on youtube too
Click to expand...
Click to collapse
Thanks, I'm going to try this and let you know !
I gave a look on what you've suggested, but is that going to let me use the phone or only backup ?
From what I understood (and I might be wrong), this only allows to backup because the phone would be worthless...
bbsugar said:
I gave a look on what you've suggested, but is that going to let me use the phone or only backup ?
From what I understood (and I might be wrong), this only allows to backup because the phone would be worthless...
Click to expand...
Click to collapse
You'll be abble to use the phone, but it would be slower duo to the fact that with ILAPO you disable the "2 more powerfull" cpu cores... this metod let only 1 core active from the other 4, if you want to use the other two you have to gain root permissions and install an .apk to reactive the other 3. It's a litle triky but better than nothing I guess ��
PS: if you dont want to deal with all this bulls**it send it to LG
Same problem
This morning my Lg G4 also got stuck in boot Lg screen. Did you manage to fix your issue or got the data backup ?
sometimes flashing stock LP firmware fix it.. sometimes you must send it back to LG for repair..
localgh0st said:
This morning my Lg G4 also got stuck in boot Lg screen. Did you manage to fix your issue or got the data backup ?
Click to expand...
Click to collapse
I managed to backup, it's a weird trick and you need to have TWRP installed I guess:
- Remove the battery
- Plug your phone (I used my laptop but I'm guessing it also work directly from the charger)
- Push volume down + power
- Insert battery holding those buttons
I managed to enter TWRP and backup with this.
It didn't work at first, I had to try it several times.
I also read you have to keep holding volume down + power until the phone reboot itself once, and then you get access to TWRP but I tried so many times differently I don't remember which one worked best. Anyway, it worked for me that way.
I didn't fix the issue and I sent it to LG... I'm so frustrated, it's been 10 years I'm into this stuff and I always managed to fix everything
Hi guys,
So my G4 just came back from LG, they replaced the motherboard and that's it... A bit disappointed to not having been able to fix it myself but at least, it worked.
I didn't have to pay anything since it was a hardware defect, LG took care of it.
Thanks for those who tried to help, I hope this post would be useful for some with the same issue.
bbsugar said:
Hi guys,
So my G4 just came back from LG, they replaced the motherboard and that's it... A bit disappointed to not having been able to fix it myself but at least, it worked.
I didn't have to pay anything since it was a hardware defect, LG took care of it.
Thanks for those who tried to help, I hope this post would be useful for some with the same issue.
Click to expand...
Click to collapse
I'm having this same issue out of the blue. Is your serial number one of the infamous "before 509" ones? I'm on TMo with the H811, so it may not be similar at all....but I'm at my wits end. I've never had a spontaneous boot loop happen to me before now. It was always something I'd done.
Dramatdude said:
I'm having this same issue out of the blue. Is your serial number one of the infamous "before 509" ones? I'm on TMo with the H811, so it may not be similar at all....but I'm at my wits end. I've never had a spontaneous boot loop happen to me before now. It was always something I'd done.
Click to expand...
Click to collapse
Indeed, my serial number was 505 something.
I've been there too, if it's spontaneous, it must be this hardware defect...
bbsugar said:
Indeed, my serial number was 505 something.
I've been there too, if it's spontaneous, it must be this hardware defect...
Click to expand...
Click to collapse
Interesting... Especially since mine was a 509 or something. I guess they missed some units. Oh well, I just JUMP'ed early with my TMo plan to the G5. That was my second G4 after a similar issue 13 days into owning the first one back in November. Having your phone spontaneously die is quite a fun way to spend your anniversary -____-. I wasn't about to give that model a 3rd try. Thanks for replying.
So my mom had an LG G3 D850 from at&t. was totally fine, then she updated whatever she had to 6.0 and it started bootlooping. Tried the LG Flash tool with a tot stock firmware. Went through the whole process got the blue screen with the red 3, it restarted, kept bootlooping. Tried it again but then it got stuck on 5% for like 4 hours, unplugged it and now no matter what i do i cant get into download mode. It shows the LG screen then goes straight to firmware update (even if i dont hold vol up) and it says 910K Bxx QEM (the xx changes) I was able to get into recovery mode, recovered it. same thing. Im losing my mind a little bit here so any advice, or pointing me to a tutorial would be greatly appreciated. Ive looked all over the internet and cant find anything helpful apparently the qualcomm thing where you short the motherboard doesnt work for this phone either?
*flips desk*
If it is under warranty .send your phone to at&t to get it fixed.
Its not
Jahanzaibawan said:
If it is under warranty .send your phone to at&t to get it fixed.
Click to expand...
Click to collapse
warranty expired 6 months ago
evangelion117 said:
warranty expired 6 months ago
Click to expand...
Click to collapse
i have same
Qualcmomm method you are describing is just to bring your phone into download mode. I have done this to my brother's g3. You have to flash using LG flashtool using different settings and then hard reset your phone. If it doesn't solve your problem.try to replace battery and then use custom rom.
tried that
Jahanzaibawan said:
Qualcmomm method you are describing is just to bring your phone into download mode. I have done this to my brother's g3. You have to flash using LG flashtool using different settings and then hard reset your phone. If it doesn't solve your problem.try to replace battery and then use custom rom.
Click to expand...
Click to collapse
no matter what settings i set LG flash tool to it doesnt recognize the phone. and no matter what i do the phone jumps to the firmware update screen, it skips the download mode screen. I have two batteries and ive repeatedly switched them back and forth :/ even after reseting the phone with factory reset it goes back go the firmware update screen
evangelion117 said:
no matter what settings i set LG flash tool to it doesnt recognize the phone. and no matter what i do the phone jumps to the firmware update screen, it skips the download mode screen. I have two batteries and ive repeatedly switched them back and forth :/ even after reseting the phone with factory reset it goes back go the firmware update screen
Click to expand...
Click to collapse
Firmware update screen is the download mode.
Just follow the guide of hyelton to flash your phone.follow steps properly.
still bootloops :/
Jahanzaibawan said:
Firmware update screen is the download mode.
Just follow the guide of hyelton to flash your phone.follow steps properly.
Click to expand...
Click to collapse
totally forgot to switch to com41, did everything exactly like that. got to the red 3, restarted it, and it still bootloops. i guess ill try a custom rom cause this stock one isnt working.
apparently cant do custom roms either, I got it to boot the the set up screen for 5seconds befores it crashed so i guess im throwing it away cause im sick of looking at it.
evangelion117 said:
apparently cant do custom roms either, I got it to boot the the set up screen for 5seconds befores it crashed so i guess im throwing it away cause im sick of looking at it.
Click to expand...
Click to collapse
Try LG PC Suite go to option update error recovery it will download the stock rom flash it dont worry it will take some time so be patient also what happened is when ur g3 wasnt fully updated meaning it got stuck or turned off when updating
.hit like if its helps
Hi,
I've got H815 stuck on LG logo. I've tried flashing stock fw, the I've tried the LG Bridge way, all of them completed but still stuck. Then I've tried the hard reset but no luck. Is this hardware issue then?
ojcu said:
Hi,
I've got H815 stuck on LG logo. I've tried flashing stock fw, the I've tried the LG Bridge way, all of them completed but still stuck. Then I've tried the hard reset but no luck. Is this hardware issue then?
Click to expand...
Click to collapse
Flash stock fw with lg up https://www.technobuzz.net/download-lgup-tool/
jason_l367 said:
Flash stock fw with lg up https://www.technobuzz.net/download-lgup-tool/
Click to expand...
Click to collapse
I've tried that already. Flashing goes well, but then it's still stuck on LG logo. Another thing, when I leave the phone without the battery for night, then in the morning it boots up up to optimizing apps, blue led flashes but then goes back bootloop. Some people here recommend lgup with different dll files and particular fw but I don't know if there's a point.
Yea I unbricked my bootlooped H815T with thiskdz give it a try..
I got this phone second hand and the guy said he was trying to downgrade fw, after which the bootloop happened. Is it possible that it's just the anti-rollback and not the faulty motherboard? How to make sure?
My phone is in the freezer now and we'll see how it goes...
jason_l367 said:
Yea I unbricked my bootlooped H815T with thiskdz give it a try..
Click to expand...
Click to collapse
I've just tried that, no luck. Phone still shows LG logo...
ojcu said:
I got this phone second hand and the guy said he was trying to downgrade fw, after which the bootloop happened. Is it possible that it's just the anti-rollback and not the faulty motherboard? How to make sure?
My phone is in the freezer now and we'll see how it goes...
Click to expand...
Click to collapse
Have you tried the 29a nougat beta? Sorry dude I've unbricked my G4 a lot of times with flashtool and lgup, but never had your encounter
jason_l367 said:
Have you tried the 29a nougat beta? Sorry dude I've unbricked my G4 a lot of times with flashtool and lgup, but never had your encounter
Click to expand...
Click to collapse
I've just tried something that definitely prooves that's hardware issue. I've disabled big cores using that guide and phone works now. It's just single core though. You can make images to run on 4 cores but it's only temporary solution and I'm afraid the phone may die at any time. I think I'm gonna do the return but the guy is not really happy to do that.
Maybe try to unlock the bootloader and flash twrp. It's what I would do.
Best of luck
It is unlocked. I'm just gonna return the phone. Guy sold it as having a software issue, but disabling big cores proved it's an infamous LG ilapo. It can run on 4 cores, there are guides how to do it, but you can never be sure when it dies completely. Thanks for help anyway.