Develop Bugs

[Q] can i unbrick

i just bought this phone, and its bricked. i can only get into download mode and the computer does not see it when i use adb. can i unbrick?

rob219 said:
i just bought this phone, and its bricked. i can only get into download mode and the computer does not see it when i use adb. can i unbrick?
Click to expand...
Click to collapse
r u install driver of G Pro? ???

What did you go to get there? That might help figure it out

apascual89 said:
What did you go to get there? That might help figure it out
Click to expand...
Click to collapse
i figures it out. formatted everything but my sdcard and flashed the stock firmware in download mode. it was a pain though as the instructions arent quiye rigjt and i had to go to sites other than xda to piece it all together.

rob219 said:
i figures it out. formatted everything but my sdcard and flashed the stock firmware in download mode. it was a pain though as the instructions arent quiye rigjt and i had to go to sites other than xda to piece it all together.
Click to expand...
Click to collapse
You should type up a quick guide.

Yesterday I bricked my phone as well. I just followed this method to unbricked my phone. It works~

Nukpana said:
Yesterday I bricked my phone as well. I just followed this method to unbricked my phone. It works~
Click to expand...
Click to collapse
hi
when you say you bricked your phone ... what does BRICK mean ?
i bricked my phone and doesn't even start up.. shows qualm download mode when connected to pc
thanks

zohaer21 said:
hi
when you say you bricked your phone ... what does BRICK mean ?
i bricked my phone and doesn't even start up.. shows qualm download mode when connected to pc
thanks
Click to expand...
Click to collapse
My phone stopped at ATT's boot logo(soft brick), but it was allowed me to boot into the download mode.

e988 KEEPED BOOTING INTO CWM, NOW ITS BRICKED!!!! IT WONT EVEN TURN ON

I was trying out a kitkat kernel which was for our kitkat official but I stupidly used it on an aosp rom and then my phone would only boot into cwm recovery and then I factory reset and it now doesnt even turn on, it shows up on my laptop but im running windows 8 and i havent been able to use the unbrick methods. If anyone can help out it would be appreciated and if i need to send it to LG i know i have breached warranty so what should i say to them?
Thanks!

Can you get into download mode?
Make sure the phone is off. Hold volume up and down at the same time and plug you USB cable into your phone, your phone should go into download mode.

It wont turn on at all, its like all the partitions have been corrupted. I cant get into download mode and when i go into adb it say (fault device) so I think ill need to send it back to LG

riki126 said:
It wont turn on at all, its like all the partitions have been corrupted. I cant get into download mode and when i go into adb it say (fault device) so I think ill need to send it back to LG
Click to expand...
Click to collapse
That sounds about right.....that really sucks man ....if you cant get into download mode and I don't know of a jig built for this device butni have one for Samsung which throws it into download mode......for our device I know of none..........your beat bet is probably to send it to lg as it seems to be hardbricked
2SHAYNE

Yeah i agree, thanks

Hi what should i tell LG on the phone when i call them? should i tell them the truth or a lie? its completly bricked so they wouldnt have any traces of me rooting it would they?

JustinNL said:
Can you get into download mode?
Make sure the phone is off. Hold volume up and down at the same time and plug you USB cable into your phone, your phone should go into download mode.
Click to expand...
Click to collapse
shayneflashindaily said:
That sounds about right.....that really sucks man ....if you cant get into download mode and I don't know of a jig built for this device butni have one for Samsung which throws it into download mode......for our device I know of none..........your beat bet is probably to send it to lg as it seems to be hardbricked
2SHAYNE
Click to expand...
Click to collapse
Hi what should i tell LG on the phone when i call them? should i tell them the truth or a lie? its completly bricked so they wouldnt have any traces of me rooting it would they?

riki126 said:
Hi what should i tell LG on the phone when i call them? should i tell them the truth or a lie? its completly bricked so they wouldnt have any traces of me rooting it would they?
Click to expand...
Click to collapse
Sometimes if you try to charge the phone for a really long time (say 12 to 18 hrs at stretch) - the phone starts to turn on. Try that. and see if you can boot into download mode.
Also, when you give it to LG ... tell them that it is not turning on, thats it...

ok, i tried charging it but nothing happened so ill send it to them and just say that it wont turn on. Thanks!

Once they get it booted up and see the custom kernel and Rom they are most likely going to charge you full price for another phone and of course will not honor any warrantee. As long as you're ok with that go ahead and sent it back for a replacement. with that bein said, it's probably best you tell them the truth so you get accurate info from them ahead of time.

riki126 said:
I was trying out a kitkat kernel which was for our kitkat official but I stupidly used it on an aosp rom and then my phone would only boot into cwm recovery and then I factory reset and it now doesnt even turn on, it shows up on my laptop but im running windows 8 and i havent been able to use the unbrick methods. If anyone can help out it would be appreciated and if i need to send it to LG i know i have breached warranty so what should i say to them?
Thanks!
Click to expand...
Click to collapse
If it is not to late.. What did you mean by "it shows up on my laptop but im running windows 8 and i havent been able to use the unbrick methods."?

TheMighyLoki said:
If it is not to late.. What did you mean by "it shows up on my laptop but im running windows 8 and i havent been able to use the unbrick methods."?
Click to expand...
Click to collapse
It seems to show up in device manager when i connect it with my USB as QHSUSB_DLOAD

riki126 said:
It seems to show up in device manager when i connect it with my USB as QHSUSB_DLOAD
Click to expand...
Click to collapse
Sorry I was hoping to help but from a little looking, it is Hard Brick. Sometime its the smallest thing can change everything but not this time.
Sorry and good luck.

TheMighyLoki said:
Sorry I was hoping to help but from a little looking, it is Hard Brick. Sometime its the smallest thing can change everything but not this time.
Sorry and good luck.
Click to expand...
Click to collapse
No harm done haha. ill talk to LG and see what they can do for me. Thanks

[Q] help, phone won't turn on after flashing 20b

Hi, I tried to flash 20b through twrp tonight.
I did factory reset, then flashed the bootstack, then flashed the system. But after that, my phone won't power on. I tried to remove the battery, holding power button for a long time, or power+volumn down.
The phone just does not respond at all. Can anybody help? Thanks!

souvenir1977 said:
Hi, I tried to flash 20b through twrp tonight.
I did factory reset, then flashed the bootstack, then flashed the system. But after that, my phone won't power on. I tried to remove the battery, holding power button for a long time, or power+volumn down.
The phone just does not respond at all. Can anybody help? Thanks!
Click to expand...
Click to collapse
take the battery out and put it back in and try to power it on. Repeat a few times, if that doesn't help we'll try other things.

Still_living714 said:
take the battery out and put it back in and try to power it on. Repeat a few times, if that doesn't help we'll try other things.
Click to expand...
Click to collapse
Thank you Still_living714, I tried this multiple times, but it does not work. Anything else I can try?

souvenir1977 said:
Thank you Still_living714, I tried this multiple times, but it does not work. Anything else I can try?
Click to expand...
Click to collapse
have you tried putting it into download mode?

Still_living714 said:
have you tried putting it into download mode?
Click to expand...
Click to collapse
If you are talking about holding volume button up and plug into computer, I tried that and the phone does not respond either...

souvenir1977 said:
If you are talking about holding volume button up and plug into computer, I tried that and the phone does not respond either...
Click to expand...
Click to collapse
hmm very weird. I had a similar problem were the phone wouldn't boot unless I had it plugged into the charger or my computer,give that a try.
---------- Post added at 12:12 AM ---------- Previous post was at 12:10 AM ----------
souvenir1977 said:
If you are talking about holding volume button up and plug into computer, I tried that and the phone does not respond either...
Click to expand...
Click to collapse
when I had that problem I figured out that it was the battery that was making the phone act weird. Since LG sent me another battery when they had the promotion I used the other spare and that fixed it for me.

This happens right after I flashed the new system, I doubt it is the batter problem. If I plugged into the computer it still won't power on.
(If I remove the battery and plug into computer, the screen of the phone does show some symbol, probably regarding missing memory).
Let me try to see if I use kdz flash to reinstall the system. Thanks for the help.

souvenir1977 said:
This happens right after I flashed the new system, I doubt it is the batter problem. If I plugged into the computer it still won't power on.
(If I remove the battery and plug into computer, the screen of the phone does show some symbol, probably regarding missing memory).
Let me try to see if I use kdz flash to reinstall the system. Thanks for the help.
Click to expand...
Click to collapse
well it's hard to say but without the phone being able to boot there's not anything you can do.....

you are right, flashing need the download mode....

You're getting adnroidserial xxxx in device manager when you connect it to pc?
i think you bricked phone

jkjambo said:
You're getting adnroidserial xxxx in device manager when you connect it to pc?
i think you bricked phone
Click to expand...
Click to collapse
No it just shows regular LGE com port and I am not able to flash anything. You are right, it's hard bricked I am not sure what went wrong with my twrp flashing procedure though. Will contact with LG for repair.

souvenir1977 said:
No it just shows regular LGE com port and I am not able to flash anything. You are right, it's hard bricked I am not sure what went wrong with my twrp flashing procedure though. Will contact with LG for repair.
Click to expand...
Click to collapse
that's what i mean , lge serial xxx , don't remeber exactly . it's in qhsusb mode , hardbricked ...
there is some indian guys who do that , some for free, some for little amount of money ...
search for lg g3 unbrick Qhsusb 9008... don't waste time on tutorials , non of them works with D851 ... i'm in same boat (again ) and tried everything .. nothing works , unless you're connected to lg servers directly , search for people which fixs them

http://forum.xda-developers.com/lg-...1-d855-qhsusbbulk-t3101435/page2#post60751870
here you go.
this guy helped me for free , you can contact with him

Thanks! Currently my phone is at LG service since it is still in warranty. I will definitely try that next time (knock on wood...)
jkjambo said:
http://forum.xda-developers.com/lg-...1-d855-qhsusbbulk-t3101435/page2#post60751870
here you go.
this guy helped me for free , you can contact with him
Click to expand...
Click to collapse

souvenir1977 said:
Thanks! Currently my phone is at LG service since it is still in warranty. I will definitely try that next time (knock on wood...)
Click to expand...
Click to collapse
This is why You don't flash the boot chain unless you absolutely must. I was running 20B with the old boot chain (other than rpm, that was updated) and it ran just fine. If you get a bad flash on the boot chain your sol.

How to downgrade Android 7.0 to 6.0 ZS570KL

Hello guys,
After an update to android 7.0 my cell phone started to show difficulties to load. When I connect it on it gives the following message: Caution: High temperature of the device.
This happened after I updated the firmware to the latest version. I wonder if it is to restore the system and go back to version 6.0 of android?
Thank you all,
Best regards
Lando

I have a feeling you'd need to unlock the bootloader. Even so it may not allow you to install MMon it...
Usually the newer firmware replaces the bootloader that rejects older versions of the OS to be flashed.

Help
ultramag69 said:
I have a feeling you'd need to unlock the bootloader. Even so it may not allow you to install MMon it...
Usually the newer firmware replaces the bootloader that rejects older versions of the OS to be flashed.
Click to expand...
Click to collapse
Yes, actually I already unlocked but it did not work. When I try to flash the ROM it says that the version is impractical with the CPU. And nothing truth is not because I've tried more than 5 old roms.
Please if anyone knows how I do this downgrade help me, because I have to have to try several times to load the phone with it turned off.
Many thanks to any help!

landognr said:
Yes, actually I already unlocked but it did not work. When I try to flash the ROM it says that the version is impractical with the CPU. And nothing truth is not because I've tried more than 5 old roms.
Please if anyone knows how I do this downgrade help me, because I have to have to try several times to load the phone with it turned off.
Many thanks to any help!
Click to expand...
Click to collapse
Boot latest twrp
wipe everything on phone in twrp (tick all boxes)
Flash the correct (2.4ghz or 2.15ghz) android 6.0 rom from the asus website. You will need to transfer the zip file to your phone from computer while in recovery. Sometimes you have to reboot twrp after wiping to see the storage on your computer.
Be careful as wiping you phone will remove the os and will result in soft brick if u don't flash the android 6.0 rom.
I have reverted to android 6.0 twice on the sd821 variant but still only do this if you are confident.
I am not responsible if you brick your phone

Brick
Huffy1 said:
Boot latest twrp
wipe everything on phone in twrp (tick all boxes)
Flash the correct (2.4ghz or 2.15ghz) android 6.0 rom from the asus website. You will need to transfer the zip file to your phone from computer while in recovery. Sometimes you have to reboot twrp after wiping to see the storage on your computer.
Be careful as wiping you phone will remove the os and will result in soft brick if u don't flash the android 6.0 rom.
I have reverted to android 6.0 twice on the sd821 variant but still only do this if you are confident.
I am not responsible if you brick your phone
Click to expand...
Click to collapse
Hello friend,
Unfortunately at the time of doing the procedure by an oversight on my part I forgot to do the full wipe. I circled the correct ROM for my phone, but did not do the wipe.
The phone rebooted, hung up and did not call anymore. I can not believe it looks like it gave soft brick due to this my carelessness.
It does not go into fasboot or recovery mode. It gets totally off and when I connect to the pc it recognizes as Qualcomm hs-usb qdloader 9008.
I'm desperate, have I lost my phone? Is there any way to fix this friend? Please ask if anyone knows any procedure to correct it.
Thank you from the heart.
=(

landognr said:
Hello friend,
Unfortunately at the time of doing the procedure by an oversight on my part I forgot to do the full wipe. I circled the correct ROM for my phone, but did not do the wipe.
The phone rebooted, hung up and did not call anymore. I can not believe it looks like it gave soft brick due to this my carelessness.
It does not go into fasboot or recovery mode. It gets totally off and when I connect to the pc it recognizes as Qualcomm hs-usb qdloader 9008.
I'm desperate, have I lost my phone? Is there any way to fix this friend? Please ask if anyone knows any procedure to correct it.
Thank you from the heart.
=(
Click to expand...
Click to collapse
Hi sorry I'm having trouble understanding what your stuck at. You saying the phone doesn't boot at all?

Huffy1 said:
Hi sorry I'm having trouble understanding what your stuck at. You saying the phone doesn't boot at all?
Click to expand...
Click to collapse
Exactly! My phone doesn't boot, just recognizes how QUalcomm HS-USB QDLoader 9008 in my PC. He's dont boot or fastboot mode and dont recovery. Could you help me please?

landognr said:
Exactly! My phone doesn't boot, just recognizes how QUalcomm HS-USB QDLoader 9008 in my PC. He's dont boot or fastboot mode and dont recovery. Could you help me please?
Click to expand...
Click to collapse
Ok restoring your phone with the Qualcomm loader is a very lengthy and complicated process. When the phone is completely off. Hold down the volume up button and power button for a while until the Asus logo appears on the screen. Then open cmd in your android-sdk folder and type "fastboot devices." Let me know if it detects the phone

Huffy1 said:
Ok restoring your phone with the Qualcomm loader is a very lengthy and complicated process. When the phone is completely off. Hold down the volume up button and power button for a while until the Asus logo appears on the screen. Then open cmd in your android-sdk folder and type "fastboot devices." Let me know if it detects the phone
Click to expand...
Click to collapse
Hello friend,
Unfortunately this procedure dont work, my device dont turn on. With power + vol up or power + vol down or both at the same time dont work, because he gives no sign of life. All I can do is connect the PC and recognize how Qualcomm hs-usb qdloader 9008 in device manager. You know others procedure to do?? Thank you

landognr said:
Hello friend,
Unfortunately this procedure dont work, my device dont turn on. With power + vol up or power + vol down or both at the same time dont work, because he gives no sign of life. All I can do is connect the PC and recognize how Qualcomm hs-usb qdloader 9008 in device manager. You know others procedure to do?? Thank you
Click to expand...
Click to collapse
What phone version do u have? S821 or s820?

Huffy1 said:
What phone version do u have? S821 or s820?
Click to expand...
Click to collapse
I think s820, my phone is CPU 2.15GHz version. Thank your repply

landognr said:
I think s820, my phone is CPU 2.15GHz version. Thank your repply
Click to expand...
Click to collapse
Ok well unfortunately my phone is s821. You need someone here that has a s820 to factory reset then backup their phone. Then you can use the Qualcomm loader to restore your phone.

​
Huffy1 said:
Ok well unfortunately my phone is s821. You need someone here that has a s820 to factory reset then backup their phone. Then you can use the Qualcomm loader to restore your phone.
Click to expand...
Click to collapse
Ok man, but where can i find files to do a factory reset?
im searching in.web but i cant find. Please bro help me, i dont know what do. You are my last hope to solve this, thanks

landognr said:
Ok man, but where can i find files to do a factory reset?
im searching in.web but i cant find. Please bro help me, i dont know what do. You are my last hope to solve this, thanks
Click to expand...
Click to collapse
Like I said as this is such an uncommon phone it probably doesn't exist. You need someone willing to upload a backup of their phone 2.15ghz for u to restore.

Huffy1 said:
Like I said as this is such an uncommon phone it probably doesn't exist. You need someone willing to upload a backup of their phone 2.15ghz for u to restore.
Click to expand...
Click to collapse
Ok Man, but can you send me the step by step of how you managed to solve your problem, regardless of whether rom is different? I know you have nothing to do with it, but I have spent all my savings on this device and need to work out a way to recover it.
Thanks Huffy :good:

landognr said:
Hello guys,
After an update to android 7.0 my cell phone started to show difficulties to load. When I connect it on it gives the following message: Caution: High temperature of the device.
This happened after I updated the firmware to the latest version. I wonder if it is to restore the system and go back to version 6.0 of android?
Thank you all,
Best regards
Lando
Click to expand...
Click to collapse
Did you success?Have you unlock the bootloader of your phone?unlock is necessary!(even though somebody say it work on locked phone)
Here come the tip from Taiwan forum~
link

samson1357924 said:
Did you success?Have you unlock the bootloader of your phone?unlock is necessary!(even though somebody say it work on locked phone)
Here come the tip from Taiwan forum~
link
Click to expand...
Click to collapse
Yes, The bootloader was already unlocked before the problem happened on my phone. I dont think you really understood my problem. What I need is to recover the bootloader from my device.

You said: wonder if it is to restore the system and go back to version 6.0 of android?
So I give you the way to downgrade~It’s not difficult.
I don't know that you had brick your phone......

samson1357924 said:
You said: wonder if it is to restore the system and go back to version 6.0 of android?
So I give you the way to downgrade~It’s not difficult.
I don't know that you had brick your phone......
Click to expand...
Click to collapse
Will QuickCharge 3.0 work again if you return to Android 6 (given that it was removed in Android 7)?

AWT86 said:
Will QuickCharge 3.0 work again if you return to Android 6 (given that it was removed in Android 7)?
Click to expand...
Click to collapse
It was never removed it works fine on Android 7.0. Sometimes you have to factory reset your phone to get it working after an upgrade.
You do have to use the supplied ASUS charger though which is really annoying to get qc3.0 speeds. Other qc certified quick charge 3.0 will only charge at normal speeds. Something Asus have blocked themselves.

LG G4 H815 - Stuck on Bootloader State

Hi to all,
yesterday I attempted to install LineageOS on my LG G4 h815.
I followed this tutorial -> https://forum.xda-developers.com/g4/general/howto-complete-guide-to-unlock-twrp-t3370003
Everything went fine. I was able to boot under LineageOS reinstall my apps etc, etc.
This morning when I woke up everything seemed normal too. But, few minutes ago, I sent an SMS via Google Messages the phone froze and then black screen.
When it froze I had 97% battery.
Ï tried to reboot it with power button -> Nothing.
I tried to remove the battery put it back on and pressed the power button -> One tiny vibration but nothing
I tried several times the same last process and finally I managed to get the screen with "Bootloader state : Unlocked !", but I cannot go further.
If I connect the phone with a USB cable, wether he's "turned on" or turned off no led is blinking.
Does someone have a clue to fix this or has ever encountered this issue ?
Tanks in advance and do not hesitate to refer to an old post. I wil check (but found no same case).
Jérémie.

Monkeypox95 said:
Hi to all,
yesterday I attempted to install LineageOS on my LG G4 h815.
I followed this tutorial -> https://forum.xda-developers.com/g4/general/howto-complete-guide-to-unlock-twrp-t3370003
Everything went fine. I was able to boot under LineageOS reinstall my apps etc, etc.
This morning when I woke up everything seemed normal too. But, few minutes ago, I sent an SMS via Google Messages the phone froze and then black screen.
When it froze I had 97% battery.
Ï tried to reboot it with power button -> Nothing.
I tried to remove the battery put it back on and pressed the power button -> One tiny vibration but nothing
I tried several times the same last process and finally I managed to get the screen with "Bootloader state : Unlocked !", but I cannot go further.
If I connect the phone with a USB cable, wether he's "turned on" or turned off no led is blinking.
Does someone have a clue to fix this or has ever encountered this issue ?
Tanks in advance and do not hesitate to refer to an old post. I wil check (but found no same case).
Jérémie.
Click to expand...
Click to collapse
Take note of what version of recovery you have you at need to try a few different versions or your device has the dreded boot loop issue........
---------- Post added at 10:38 AM ---------- Previous post was at 10:22 AM ----------
stinka318 said:
Take note of what version of recovery you have you at need to try a few different versions or your device has the dreded boot loop issue........
Click to expand...
Click to collapse
This at help to........
https://forum.xda-developers.com/g4/help/installing-twrp-issue-t3606772

stinka318 said:
Take note of what version of recovery you have you at need to try a few different versions or your device has the dreded boot loop issue........
---------- Post added at 10:38 AM ---------- Previous post was at 10:22 AM ----------
This at help to........
https://forum.xda-developers.com/g4/help/installing-twrp-issue-t3606772
Click to expand...
Click to collapse
Not sure to understand but how can I try different versions of TWRP if I can't get to Recovery mode ?

Monkeypox95 said:
Not sure to understand but how can I try different versions of TWRP if I can't get to Recovery mode ?
Click to expand...
Click to collapse
What version did you flash.......

stinka318 said:
What version did you flash.......
Click to expand...
Click to collapse
I flashed this img twrp-3.0.2-1-h815.img

Monkeypox95 said:
I flashed this img twrp-3.0.2-1-h815.img
Click to expand...
Click to collapse
Is there another version that you can try found on Samsung device sometimes flashing a older version may work.....

stinka318 said:
Is there another version that you can try found on Samsung device sometimes flashing a older version may work.....
Click to expand...
Click to collapse
I really would like to try another version but how ? I can't even get to recovery mode... I'm stuck on the first LG logo.

Monkeypox95 said:
I really would like to try another version but how ? I can't even get to recovery mode... I'm stuck on the first LG logo.
Click to expand...
Click to collapse
If you can get it in to download mode use you laptop to flash recovery this is probably why it has failed.......remember Google s your friend.

stinka318 said:
If you can get it in to download mode use you laptop to flash recovery this is probably why it has failed.......remember Google s your friend.
Click to expand...
Click to collapse
Just to perfectly understand.
Are you advising me to flash my recovery with an older version via my laptop (I imagine via adb/fastboot) despite I can't even get my LG be recognized by my laptop ?
Will the adb/fastboot command be functional as the LG seems not to be recognized on the PC?

Monkeypox95 said:
Just to perfectly understand.
Are you advising me to flash my recovery with an older version via my laptop (I imagine via adb/fastboot) despite I can't even get my LG be recognized by my laptop ?
Will the adb/fastboot command be functional as the LG seems not to be recognized on the PC?
Click to expand...
Click to collapse
The best way to get your laptop I recognize your phone is to get LG up running then with the usb plugged n drop the battery out then put battery back in then close off LG up.
Then start it again and when it go's into download mode the pull usb and close off LG up Then plug it back in with dos prompt open............

stinka318 said:
The best way to get your laptop I recognize your phone is to get LG up running then with the usb plugged n drop the battery out then put battery back in then close off LG up.
Then start it again and when it go's into download mode the pull usb and close off LG up Then plug it back in with dos prompt open............
Click to expand...
Click to collapse
Thanks for your reply and your time. I didn't know this software "LG Up", I will give it a try this evening (in France ^^') and give you feedback then.

Monkeypox95 said:
Thanks for your reply and your time. I didn't know this software "LG Up", I will give it a try this evening (in France ^^') and give you feedback then.
Click to expand...
Click to collapse
LG UP had no effect on the phone.
However, now the phone seems to have 0% battery and when I try to boot it I get the graphics to plug the phone on a source of energy. Once I do that the front led is blinking in orange (I guess because I had less than 1 or 2% o battery) and now the front led is still lit on in orange. Is this a good news or I'm hoping for nothing.
Anyway tomorrow I will try to get it back to my retailer.
Does anyone succedeed to get it replaced by LG even if the bootloader is unlocked ?
Thanks.

After a little journey to the repair shop of my retailer everything seems to work correctly, for the moment, with LineageOS !
Thanks everyone for your help !