Develop Bugs

[Q] flashed tmo on att d850 HELP!

I just flashed a rom on my d850 and now the screen wont turn on the phone is completely unresponsive I don't know what to do I can't even get the phone to boot some one help me im sure I just bricked the phone..

sriv2102 said:
I just flashed a rom on my d850 and now the screen wont turn on the phone is completely unresponsive I don't know what to do I can't even get the phone to boot some one help me im sure I just bricked the phone..
Click to expand...
Click to collapse
First, what rom did you flash and how did you flash it?
Try this as well:
Pull the battery, press the power button for a few seconds. Put the battery back in and press the power button again. Pop the battery out a 2nd time and then put it back in. See if it turns on.
If that doesn't work, pull the battery and hook the phone up (without the battery) to a computer and again see if it turns on and shows up in device manager.
Flashing the wrong rom should only result in a non-booting situation. If you have a custom recovery installed, you should be able to still get into that. The d850 has some serious issues with successfully rebooting in general (which can be resolved by the two suggested procedures above), so I would suspect that before worrying about a brick.
Lastly, the d850 requires bumped ROMs to get by the locked bootloader. The d851 (T-Mobile version) does not have a locked bootloader, so the roms are not bumped and will of course fail to boot.
Once you get back into recovery, just wipe all partitions except for internal storage/sd card and install a correct rom.

nicknc said:
First, what rom did you flash and how did you flash it?
Try this as well:
Pull the battery, press the power button for a few seconds. Put the battery back in and press the power button again. Pop the battery out a 2nd time and then put it back in. See if it turns on.
If that doesn't work, pull the battery and hook the phone up (without the battery) to a computer and again see if it turns on and shows up in device manager.
Flashing the wrong rom should only result in a non-booting situation. If you have a custom recovery installed, you should be able to still get into that. The d850 has some serious issues with successfully rebooting in general (which can be resolved by the two suggested procedures above), so I would suspect that before worrying about a brick.
Lastly, the d850 requires bumped ROMs to get by the locked bootloader. The d851 (T-Mobile version) does not have a locked bootloader, so the roms are not bumped and will of course fail to boot.
Once you get back into recovery, just wipe all partitions except for internal storage/sd card and install a correct rom.
Click to expand...
Click to collapse
hey so i flashed the new port of the g4 on my phone and i believe i bricked the device i am not able to reach my recovery the method you mentioned did not work but plugging the phone in with out the battery did get the screen on. I'm not sure what else to do at this point I do greatly appreciate your help dude!..

sriv2102 said:
hey so i flashed the new port of the g4 on my phone and i believe i bricked the device i am not able to reach my recovery the method you mentioned did not work but plugging the phone in with out the battery did get the screen on. I'm not sure what else to do at this point I do greatly appreciate your help dude!..
Click to expand...
Click to collapse
When you say you got the phone on, what do you mean?
If it is on and showing up as a phone in Windows, why not just use the LG recovery tool and flash back to stock, then start over?

nicknc said:
When you say you got the phone on, what do you mean?
If it is on and showing up as a phone in Windows, why not just use the LG recovery tool and flash back to stock, then start over?
Click to expand...
Click to collapse
it jus shows that the battery is missing nothing else as soon as i replace the battery the screen stays black im not able to boot into download or recovery

sriv2102 said:
it jus shows that the battery is missing nothing else as soon as i replace the battery the screen stays black im not able to boot into download or recovery
Click to expand...
Click to collapse
Does it show up in windows at all?

it does under device manager i can find it .

nicknc said:
Does it show up in windows at all?
Click to expand...
Click to collapse
it does show up in windows and i have the drivers installed still.

sriv2102 said:
it does show up in windows and i have the drivers installed still.
Click to expand...
Click to collapse
Give the lg firmware flash and recovery tools a go then. There are several threads on here dealing with unbricking phones that detail what you need to do.

nicknc said:
Give the lg firmware flash and recovery tools a go then. There are several threads on here dealing with unbricking phones that detail what you need to do.
Click to expand...
Click to collapse
I did use the lg flash tool but it was not successful im not sure what else to try..

sriv2102 said:
I did use the lg flash tool but it was not successful im not sure what else to try..
Click to expand...
Click to collapse
Did you solved it? I have the same problem, the screen only turns on when i charge the phone

I deleted my Android OS, stuck on LG's logo

Hello to everyone, i hope there is someone could help me
Like i said in the title i deleted my Android OS (yes, i'm an idiot) and now i'm stuck in the LG's logo with the label of unlocked bootloader. I tried to enter in download mode or in TWRP but nothing works...
Do you any advice for me? Thanks and i'm sorry for my bad english

How did you manage to delete your OS? lol.

NocturnalDroid said:
How did you manage to delete your OS? lol.
Click to expand...
Click to collapse
i wiped all internal data for install a new rom via TWRP but this new rom doesn't exist XD

Okay, so you wiped all data. Then what, you tried to flash new rom via ADB?

just reboot to twrp by holding vol up and power. when you see the lg logo release power and press and hold it again. Then a screen asking to factory reset comes up. say yes and yes, then you are in twrp. Connect phone to computer and enable mtp mode so your computer see the phone. You can then transfer another rom to phone to flash.

MrSteelX said:
just reboot to twrp by holding vol up and power. when you see the lg logo release power and press and hold it again. Then a screen asking to factory reset comes up. say yes and yes, then you are in twrp. Connect phone to computer and enable mtp mode so your computer see the phone. You can then transfer another rom to phone to flash.
Click to expand...
Click to collapse
I think he mentioned TWRP/Download mode not working. He's deleted everything basically, lol.

NocturnalDroid said:
I think he mentioned TWRP/Download mode not working. He's deleted everything basically, lol.
Click to expand...
Click to collapse
if thats true, this is a hard brick and lg can fix it.

FUBAR.

IlBudda said:
i wiped all internal data for install a new rom via TWRP but this new rom doesn't exist XD
Click to expand...
Click to collapse
Wiping even with internal data checked doesn't wipe twrp...you will have to use button combo to boot as another user suggested...hold vol down+power and when screen comes on release only power then quickly repress power...do not release volume...many people are giving instructions from g2/3 which are slightly different than g4...i have accidentally done this myself...trust me twrp won't overwrite itself it's still there

MrSteelX said:
if thats true, this is a hard brick and lg can fix it.
Click to expand...
Click to collapse
How? Because i unlocked the bootloader and now technically i don't have the warranty
jamesd1085 said:
Wiping even with internal data checked doesn't wipe twrp...you will have to use button combo to boot as another user suggested...hold vol down+power and when screen comes on release only power then quickly repress power...do not release volume...many people are giving instructions from g2/3 which are slightly different than g4...i have accidentally done this myself...trust me twrp won't overwrite itself it's still there
Click to expand...
Click to collapse
I tried now but doesn't work...

IlBudda said:
How? Because i unlocked the bootloader and now technically i don't have the warranty
I tried now but doesn't work...
Click to expand...
Click to collapse
With phone off. Hold bottom vom down and plug usb connected from pc to phone. That will force download mode. If so, go here http://forum.xda-developers.com/g4/general/guide-lg-g4-stock-firmware-to-stock-kdz-t3107848

MrSteelX said:
With phone off. Hold bottom vom down and plug usb connected from pc to phone. That will force download mode. If so, go here http://forum.xda-developers.com/g4/general/guide-lg-g4-stock-firmware-to-stock-kdz-t3107848
Click to expand...
Click to collapse
I love you, it works! Thank you very much

IlBudda said:
How? Because i unlocked the bootloader and now technically i don't have the warranty
I tried now but doesn't work...
Click to expand...
Click to collapse
Then you did more than you stated you did because i have erased all in twrp including internal storage and had only to do the button combo to get twrp going and send rom file from pc...retrace your steps and make sure you give as much info as possible and maybe someone can help...but none of the things you mentioned would have touched custom recovery...nevermind it seems you fixed it...enjoy

haha this i have done 3 days after buyed my G4 xD
i was so happy that a KDZ exist... Flashed and well done xD

Boot Verification Failed

Hey all, I really have no knowledge when it comes to phones, so any help would be appreciated.
I have been trying to root my LG G3 for a few days now, but it just wont happen. I have tried PurpleDrake and ioroot and end up with the same error every time whilst the phone is restarting. As the screen is black and attempts to boot, in the top right of the screen, the message "Verification boot failed! cause- MISMATCH_SIG_LEN" and then the phone will just go to a black screen while the LED alternates blue and red. This also happens when I try to enter stock recovery. I know I have the latest ADB drivers installed and the right drivers for my phone, so that can't be it. My G3 is a D852 with SV 30b on Marshmallow, my carrier is Bell. Thanks.

HaiM80 said:
Hey all, I really have no knowledge when it comes to phones, so any help would be appreciated.
I have been trying to root my LG G3 for a few days now, but it just wont happen. I have tried PurpleDrake and ioroot and end up with the same error every time whilst the phone is restarting. As the screen is black and attempts to boot, in the top right of the screen, the message "Verification boot failed! cause- MISMATCH_SIG_LEN" and then the phone will just go to a black screen while the LED alternates blue and red. This also happens when I try to enter stock recovery. I know I have the latest ADB drivers installed and the right drivers for my phone, so that can't be it. My G3 is a D852 with SV 30b on Marshmallow, my carrier is Bell. Thanks.
Click to expand...
Click to collapse
Switch of your phone then hold volume up &connect your phone with pc by using usb cable.....
See what happen? Able to enter download mode..

Anik49 said:
Switch of your phone then hold volume up &connect your phone with pc by using usb cable.....
See what happen? Able to enter download mode..
Click to expand...
Click to collapse
Sorry for being so dumb, but could you clarify what that will do for me?

HaiM80 said:
Sorry for being so dumb, but could you clarify what that will do for me?
Click to expand...
Click to collapse
If you able to do that than you can flash your phone again.....for more clarify you have to install your phone software again to solve this issue also you cant flash v30b again right now you have to flash any other version to boot up your phone.

Anik49 said:
If you able to do that than you can flash your phone again.....for more clarify you have to install your phone software again to solve this issue also you cant flash v30b again right now you have to flash any other version to boot up your phone.
Click to expand...
Click to collapse
Ah, sorry for the confusion, but my phone starts just fine. I should have clarified in the original question that i can just hold the power button and volume down button and my phone will restart like nothing happened. Its only when root programs try to reboot into recovery and when I try to do it manually. Again, sorry about that

HaiM80 said:
Ah, sorry for the confusion, but my phone starts just fine. I should have clarified in the original question that i can just hold the power button and volume down button and my phone will restart like nothing happened. Its only when root programs try to reboot into recovery and when I try to do it manually. Again, sorry about that
Click to expand...
Click to collapse
You have working twrp....if you want root in mm you need twrp first...
---------- Post added at 01:13 AM ---------- Previous post was at 01:06 AM ----------
HaiM80 said:
Ah, sorry for the confusion, but my phone starts just fine. I should have clarified in the original question that i can just hold the power button and volume down button and my phone will restart like nothing happened. Its only when root programs try to reboot into recovery and when I try to do it manually. Again, sorry about that
Click to expand...
Click to collapse
Look here you get more info
http://forum.xda-developers.com/lg-g3/general/lg-g3-d852-telus-koodo-marshmallow-t3348286

And that's where I get confused, because when I look up how to get twrp, I am told I need root first. I have temp rooted before and used flashify to try and flash a twrp but then on reboot I would get the error.

HaiM80 said:
And that's where I get confused, because when I look up how to get twrp, I am told I need root first. I have temp rooted before and used flashify to try and flash a twrp but then on reboot I would get the error.
Click to expand...
Click to collapse
Use autorec not flashify.....but be sure you install autorec for mm version also for d852.....go to this page you will get all your file http://forum.xda-developers.com/lg-g3/development/canadian-d852-stock-bumped-rooted-rom-t3056843

Anik49 said:
Use autorec not flashify.....but be sure you install autorec for mm version also for d852.....go to this page you will get all your file http://forum.xda-developers.com/lg-g3/development/canadian-d852-stock-bumped-rooted-rom-t3056843
Click to expand...
Click to collapse
Thanks a lot for your help Anik! I can be really dumb sometimes and the fact that I can't think straight at the moment doesn't help. Seems like the main problem would be is that I was downloading Autorec of the play store, which is for lollipop. Should have seen that coming with the logo... Again, thanks!

Vibe K5 doesn't boot up

hi, I need some help, i'm desperate.
I was using a bad charger, when my phone was in low battery, so it turned off my phone (charging > not charging) three times. In the third boot, the CM logo just froze up, and the phone didn't boot anymore. It appears Lenovo's logo and then the screen turns black and i'm not able to press any button. I tried to: wipe everything, flash another rom, but the same still happening. I flashed stock rom too, but it gives me a bootloop. I tried to use a TWRP's backup from stock rom, but it didn't work either.
Any help? I don't know what to do

Gabriel337 said:
hi, I need some help, i'm desperate.
I was using a bad charger, when my phone was in low battery, so it turned off my phone (charging > not charging) three times. In the third boot, the CM logo just froze up, and the phone didn't boot anymore. It appears Lenovo's logo and then the screen turns black and i'm not able to press any button. I tried to: wipe everything, flash another rom, but the same still happening. I flashed stock rom too, but it gives me a bootloop. I tried to use a TWRP's backup from stock rom, but it didn't work either.
Any help? I don't know what to do
Click to expand...
Click to collapse
Since you flashed a stock rom , flash a new twrp using adb and fastboot and wipe everything except system . BTW a simple reboot (or three) cant damage system. Try checking battery too if you could

soldiersz said:
Since you flashed a stock rom , flash a new twrp using adb and fastboot and wipe everything except system . BTW a simple reboot (or three) cant damage system. Try checking battery too if you could
Click to expand...
Click to collapse
I tried that now, it didn't work, still on bootloop :/

Gabriel337 said:
I tried that now, it didn't work, still on bootloop :/
Click to expand...
Click to collapse
Use Qualcomm Flash tool or QFIL then ..

soldiersz said:
Since you flashed a stock rom , flash a new twrp using adb and fastboot and wipe everything except system . BTW a simple reboot (or three) cant damage system. Try checking battery too if you could
Click to expand...
Click to collapse
soldiersz said:
Use Qualcomm Flash tool or QFIL then ..
Click to expand...
Click to collapse
I tried that with QFIL and Lenovo Smart Assistance. and bootloop.
But I think i've made some progress:
I tried to flashed a new rom (I flashed CM/RR/AOCP before, is with these roms the frozen lenovo screen happens), CRDROID, and it appears crdroid bootanimation, and load until it frozes and phone turn off.

Gabriel337 said:
I tried that with QFIL and Lenovo Smart Assistance. and bootloop.
But I think i've made some progress:
I tried to flashed a new rom (I flashed CM/RR/AOCP), CRDROID, and it appears crdroid bootanimation, and load until it frozes and phone turn off.
Click to expand...
Click to collapse
Wipe everything except system. It should work

soldiersz said:
Since you flashed a stock rom , flash a new twrp using adb and fastboot and wipe everything except system . BTW a simple reboot (or three) cant damage system. Try checking battery too if you could
Click to expand...
Click to collapse
soldiersz said:
Use Qualcomm Flash tool or QFIL then ..
Click to expand...
Click to collapse
soldiersz said:
Wipe everything except system. It should work
Click to expand...
Click to collapse
First of all, thanks for you help!
So, I wiped, and nope, the same error happens. This is a problem that I've never seen before

Gabriel337 said:
First of all, thanks for you help!
So, I wiped, and nope, the same mistake it happens. This is a problem that I've never seen before
Click to expand...
Click to collapse
Yeah me too :crying:

Gabriel337 said:
hi, I need some help, i'm desperate.
I was using a bad charger, when my phone was in low battery, so it turned off my phone (charging > not charging) three times. In the third boot, the CM logo just froze up, and the phone didn't boot anymore. It appears Lenovo's logo and then the screen turns black and i'm not able to press any button. I tried to: wipe everything, flash another rom, but the same still happening. I flashed stock rom too, but it gives me a bootloop. I tried to use a TWRP's backup from stock rom, but it didn't work either.
Any help? I don't know what to do
Click to expand...
Click to collapse
I am facing the same problem :crying: Got any solution? How did u flash stock ROM?

I have flashed using qfil now device works fine

Hello guys,
I wanna purchase lenovo k5 plys 3gb mobile,But this one got comments from users as it got issues with battery backup,call quality & heating issues...I got very good offer on this mobile right now . Should i go for this mobile ?

kaka9876 said:
Hello guys,
I wanna purchase lenovo k5 plys 3gb mobile,But this one got comments from users as it got issues with battery backup,call quality & heating issues...I got very good offer on this mobile right now . Should i go for this mobile ?
Click to expand...
Click to collapse
You can go for Vibe k6 power. Why k5 plus?
---------- Post added at 04:03 PM ---------- Previous post was at 04:01 PM ----------
kaka9876 said:
Hello guys,
I wanna purchase lenovo k5 plys 3gb mobile,But this one got comments from users as it got issues with battery backup,call quality & heating issues...I got very good offer on this mobile right now . Should i go for this mobile ?
Click to expand...
Click to collapse
1) Main problem is Battery backup. It won't last long a day.
2) Stock ROM Really sucks
There is no heating issue though. It has been solved by latest updates

K5 Plus flash recovery
hey guys , I've been trying to flash a custom rom through TWRP recovery menu but by my mistake i wiped the system. now it just keeps booting up over and over on the lenovo logo. please help me with this

Youzpalang said:
hey guys , I've been trying to flash a custom rom through TWRP recovery menu but by my mistake i wiped the system. now it just keeps booting up over and over on the lenovo logo. please help me with this
Click to expand...
Click to collapse
Try entering to TWRP by using the hardware keys. Do this:
Pull down the battery.
Insert again.
Press power key, volume up and volume down at the same time, until lenovo logo dissappear.
If luck, you are into TWRP now.
connect phone to computer via usb cable. you should be able to access to internal memory.
So, copy into it any custom ROM previously downloaded from your computer, and flash it. That's all.

walterfuster said:
Try entering to TWRP by using the hardware keys. Do this:
Pull down the battery.
Insert again.
Press power key, volume up and volume down at the same time, until lenovo logo dissappear.
If luck, you are into TWRP now.
connect phone to computer via usb cable. you should be able to access to internal memory.
So, copy into it any custom ROM previously downloaded from your computer, and flash it. That's all.
Click to expand...
Click to collapse
Thanks man , What custom rom would you suggest? Is bootlegger OK?

Youzpalang said:
Thanks man , What custom rom would you suggest? Is bootlegger OK?
Click to expand...
Click to collapse
Bootleggers has some bugs, like WhatsApp not being able to play GIFs or videos. Also, after a while in the day, launcher becomes laggy (maybe a kernel settings issue). You have to reboot and becomes smooth and fast again.
I highly recommend LOS 15.1 or AEX 5.6 from Harry (yes, he is continuing the development!) Both of them have June updates.
I'm on AEX right now, which is such a marvelous ROM. It has a looot of customizations than any other ROM I've tried.
How to get them?
Search into the Harry8242 profile from AFH.

walterfuster said:
Bootleggers has some bugs, like WhatsApp not being able to play GIFs or videos. Also, after a while in the day, launcher becomes laggy (maybe a kernel settings issue). You have to reboot and becomes smooth and fast again.
I highly recommend LOS 15.1 or AEX 5.6 from Harry (yes, he is continuing the development!) Both of them have June updates.
I'm on AEX right now, which is such a marvelous ROM. It has a looot of customizations than any other ROM I've tried.
How to get them?
Search into the Harry8242 profile from AFH.
Click to expand...
Click to collapse
LOS 15.1 is fine but has some bugs too(camera zoomer not working).
I've finally decided to use a STOCK ROM and there is a complication, here is the problem:" I'm using lenovo downloader software to flash and once my phone is connected, the progress bar gets stuck at the begining level and says:"Flashing" below the status bar and " Sahara "- which have no idea what means- below the step bar and it also takes too much time to do the flashing which is never done! I have the same problem with QFIL( Sahara Fail )!

Youzpalang said:
LOS 15.1 is fine but has some bugs too(camera zoomer not working).
I've finally decided to use a STOCK ROM and there is a complication, here is the problem:" I'm using lenovo downloader software to flash and once my phone is connected, the progress bar gets stuck at the begining level and says:"Flashing" below the status bar and " Sahara "- which have no idea what means- below the step bar and it also takes too much time to do the flashing which is never done! I have the same problem with QFIL( Sahara Fail )!
Click to expand...
Click to collapse
I figured out , Problem solved!

Youzpalang said:
I figured out , Problem solved!
Click to expand...
Click to collapse
Glad to hear that! So, you've decided to stay on stock ROM. OK, it has sense. stock firmware is free of bugs, right? Now, do you know being on stock LL you can "update" to MM and thus get doze and adaptive storage?
How?
Follow this guide:
https://forum.xda-developers.com/k5-plus/how-to/guide-a6020l36-official-lenovo-andoid-6-t3596733
and you'll get the most updated official stock ROM available four our device. Actually, it's a backup made by an Brazilian user, where you should restore only system and boot partitions, in order to keep your data.
This update was only released for Brazil region, but, users from other regions in the thread, reported it worked for them.
I've tried it once, and worked like a charm.

Help! Stuck at LG's Logo, green-blue led flashing

Hi, I was using my G3 (D855) normally, suddenly start to show some weird lag, and next to it to restart itself, i try to hard reset but when i try to turn it on stucks on the LG's bootlogo and the led star to flash between green and blue, so i was wondering if someone know this problem and how can be resolved? Viewing some forums say thats battery problem but in others says is hardware issue

try factory reset-- hold power button and volume DOWN at same time untill LG logo appears then relase them and press again
now hit erase all data and factory reset
this may help you if not try LG flash tool and flashing stock ROM -can find on XDA

Jeffj0092 said:
Hi, I was using my G3 (D855) normally, suddenly start to show some weird lag, and next to it to restart itself, i try to hard reset but when i try to turn it on stucks on the LG's bootlogo and the led star to flash between green and blue, so i was wondering if someone know this problem and how can be resolved? Viewing some forums say thats battery problem but in others says is hardware issue
Click to expand...
Click to collapse
Try this if you have TWRP installed. If not, flash a KDZ.
here is the repository for KDZ files.

xGlacion said:
Try this if you have TWRP installed. If not, flash a KDZ.
here is the repository for KDZ files.
Click to expand...
Click to collapse
I dont have a custom recovery, but let me try to flash the KDZ and see,,,
UPDATE: ITS SOLVED! THANKS!!!!

Jeffj0092 said:
Hi, I was using my G3 (D855) normally, suddenly start to show some weird lag, and next to it to restart itself, i try to hard reset but when i try to turn it on stucks on the LG's bootlogo and the led star to flash between green and blue, so i was wondering if someone know this problem and how can be resolved? Viewing some forums say thats battery problem but in others says is hardware issue
Click to expand...
Click to collapse
I had the same problem today, I solved this with a full wipe and clean install fulmics 6.6 + otas. Losted all my data

RobertPirainoBR said:
I had the same problem today, I solved this with a full wipe and clean install fulmics 6.6 + otas. Losted all my data
Click to expand...
Click to collapse
I solved mine flashing a KDZ!

axelxxxxx said:
try factory reset-- hold power button and volume DOWN at same time untill LG logo appears then relase them and press again
now hit erase all data and factory reset
this may help you if not try LG flash tool and flashing stock ROM -can find on XDA
Click to expand...
Click to collapse
I solved it flashing a KDZ

Jeffj0092 said:
I dont have a custom recovery, but let me try to flash the KDZ and see,,,
UPDATE: ITS SOLVED! THANKS!!!!
Click to expand...
Click to collapse
Glad to hear.