Develop Bugs

Black screen with red and blue flashing LED

Hi I use a LG G3 and flashed a zip that was not designed for my phone (Validus-shamu-5.0.1.alpha.1.0-TEST-20141217-2151.zip) by a accident and rebooted, and now my phone has a black screen and the led is flashing red and blue (and said error: boot certification verify prior to that stage). How can I fix it?
Additional info: I was using the latest TWRP recovery, and own a d852 variant.
Any input would be appreciated! This is my only phone and I would like to resolve this as soon as I can.
UPDATE: i tried pressing power + up and now nothing reacts, even when i press other buttons. black screen. no LED.
UPDATE2: I removed the battery and put it back in, and now LED are back.
EDIT: FIXED. CLOSE THREAD PLEASE. got my solution from: "What you have to is power + vol down while off till you see the LG logo, then release then immediately press them again it should bring you to a factory reset screen select yes and you will boot into recovery." if people are interested.

I need help as well
droids4lyfe99 said:
Hi I use a LG G3 and flashed a zip that was not designed for my phone (Validus-shamu-5.0.1.alpha.1.0-TEST-20141217-2151.zip) by a accident and rebooted, and now my phone has a black screen and the led is flashing red and blue (and said error: boot certification verify prior to that stage). How can I fix it?
Additional info: I was using the latest TWRP recovery, and own a d852 variant.
Any input would be appreciated! This is my only phone and I would like to resolve this as soon as I can.
UPDATE: i tried pressing power + up and now nothing reacts, even when i press other buttons. black screen. no LED.
UPDATE2: I removed the battery and put it back in, and now LED are back.
EDIT: FIXED. CLOSE THREAD PLEASE. got my solution from: "What you have to is power + vol down while off till you see the LG logo, then release then immediately press them again it should bring you to a factory reset screen select yes and you will boot into recovery." if people are interested.
Click to expand...
Click to collapse
I tried to Flash twrp-2.8.0.0_d855-signed.img for TWRP Bootlader and got the same problem. Did i done some thing wrong pls I need an assist.

droids4lyfe99 said:
EDIT: FIXED. CLOSE THREAD PLEASE. got my solution from: "What you have to is power + vol down while off till you see the LG logo, then release then immediately press them again it should bring you to a factory reset screen select yes and you will boot into recovery." if people are interested.
Click to expand...
Click to collapse
Worked for me also! I just exited the factory reset menu and it booted up normally! Thanks for the help!

you're skating on very thin ice if you are flashing anything to your device that is not specifically for that model..

Cant fix the issue
Hello, i rooted a LG G3 D855, lollipop, installed flashify and then flashed twrp (last version) now i cant enter into recovery mode (red blue led blinks) i tried the factory reset without any results.
thanks

Download mode?
freddyjgv said:
Hello, i rooted a LG G3 D855, lollipop, installed flashify and then flashed twrp (last version) now i cant enter into recovery mode (red blue led blinks) i tried the factory reset without any results.
thanks
Click to expand...
Click to collapse
did you have tryed the DOWNLOAD MODE? take battery out, put usb cable on PC and on Phone, press VOL+ and untill you mantain VOL+ pressed, insert battery, download mode suposed to enter...:fingers-crossed:
if it works just reflash your firmware...

lazzarusbr said:
did you have tryed the DOWNLOAD MODE? take battery out, put usb cable on PC and on Phone, press VOL+ and untill you mantain VOL+ pressed, insert battery, download mode suposed to enter...:fingers-crossed:
if it works just reflash your firmware...
Click to expand...
Click to collapse
didnt tried but i want to get into recovery mode so i can full backup and flash cloudyg3

i have same problem on my d855 5.0 v20h.... i tried instal twrp but i cant boot into recovery mode.... system boot is fine, how can i solve this problem?? i dont wanna reflash firmware...

any solution?
linux_svk said:
i have same problem on my d855 5.0 v20h.... i tried instal twrp but i cant boot into recovery mode.... system boot is fine, how can i solve this problem?? i dont wanna reflash firmware...
Click to expand...
Click to collapse
Did you fix the issue?

linux_svk said:
i have same problem on my d855 5.0 v20h.... i tried instal twrp but i cant boot into recovery mode.... system boot is fine, how can i solve this problem?? i dont wanna reflash firmware...
Click to expand...
Click to collapse
You can use the NEW 1 CLICK script ROOT +TWRP . it Will install CORRECT files to do TWRP work in stock firmware and it will correct your problem! and at end you be with the newest version of TWRP! here: http://forum.xda-developers.com/lg-g3/general/d855-one-click-root-twrp-recovery-t3072767 :good:

lazzarusbr said:
yoy can use the NEW 1 CLICK script ROOT +TWRP . it Will install CORRECT files to do TWRP work in stock firmware and it will correct your problem! and at end you be with the newest version of TWRP! here: http://forum.xda-developers.com/lg-g3/general/d855-one-click-root-twrp-recovery-t3072767 :good:
Click to expand...
Click to collapse
it doesnt matter if i already have my phone rooted and with the red blue led issue??? thx

okey so im gonna try this http://forum.xda-developers.com/lg-g3/general/d855-one-click-root-twrp-recovery-t3072767
GUYS DO IT LIKE HERE http://forum.xda-developers.com/showpost.php?p=59931455&postcount=104
WORK PERFECT!!!

Hi,
droids4lyfe99 said:
Hi I use a LG G3 and flashed a zip that was not designed for my phone (Validus-shamu-5.0.1.alpha.1.0-TEST-20141217-2151.zip) by a accident and rebooted, and now my phone has a black screen and the led is flashing red and blue (and said error: boot certification verify prior to that stage). How can I fix it?
Additional info: I was using the latest TWRP recovery, and own a d852 variant.
Any input would be appreciated! This is my only phone and I would like to resolve this as soon as I can.
UPDATE: i tried pressing power + up and now nothing reacts, even when i press other buttons. black screen. no LED.
UPDATE2: I removed the battery and put it back in, and now LED are back.
EDIT: FIXED. CLOSE THREAD PLEASE. got my solution from: "What you have to is power + vol down while off till you see the LG logo, then release then immediately press them again it should bring you to a factory reset screen select yes and you will boot into recovery." if people are interested.
Click to expand...
Click to collapse
Any solutions yet?

Thank You lazzarusbr!
You Sir saved me a lot of reading
This method helped me get out from the red-blue blinking, black screen Recovery ****up. I believe I got into it because I should have flashed the TWRP using KitKat, but my device came with Lollipop installed....
---------- Post added at 04:38 PM ---------- Previous post was at 04:34 PM ----------
You Sir saved me a lot of reading !
This method helped me get out from the red-blue blinking, black screen Recovery ****up. I believe I got into it because I should have flashed the TWRP using KitKat, but my device came with Lollipop installed....

Had the same problem few minutes ago, then I just hold power button to reset the phone and it worked but I dont know if TWRP is installed now..?

did you try factory mode..

lazzarusbr said:
You can use the NEW 1 CLICK script ROOT +TWRP . it Will install CORRECT files to do TWRP work in stock firmware and it will correct your problem! and at end you be with the newest version of TWRP! here: http://forum.xda-developers.com/lg-g3/general/d855-one-click-root-twrp-recovery-t3072767 :good:
Click to expand...
Click to collapse
This saved the day for me! Thank you so much!!!!!

freddyjgv said:
it doesnt matter if i already have my phone rooted and with the red blue led issue??? thx
Click to expand...
Click to collapse
Mate, thank you a lot, you just saved my life.
I can't even express how thankful I am because my device almost got bricked and you just saved me. Thanks a lot !

It means not fully load.
Try to install the AUTORECAR in the Play Store.

Lol. The same thing happened to me on LG-D855. I flashed the TWRP recovery zip and new my phone is literally unusable. It doesn't boot into recovery or into anything else. Sigh.

[Q] Lg g3 vs985 not going into recovery while device is powered off

Please help lg g 3 won't enter custom recovery I've tried all button variations

Please someone help I have a rooted g3 and don't wanna brick it?????

Go into an adb terminal and type in
Code:
adb reboot recovery[/quote]. If you don't have adb, search up minimal adb and fastboot, and how to use it.
Sent from my SM-N9100 using Tapatalk

On computer or phone?
Sent from my VS985 4G using XDA Free mobile app

And my phone already has twrp, just can't access it from device being off, but twrp app lets me go to recovery, just not when phone is off. So this should fix that right?
Sent from my VS985 4G using XDA Free mobile app

Please someone help

I've seen people are viewing this post if anyone know how to fix my problem please help or message me, the minimal adb won't work unless the device is turned on in usb. debugging, I can access my recovery with phone on easily but while it's powered off I should be able to get to custom recovery by pressing volume down and power while phone is off, but this method isn't working. So if I get in bootloop I can't get into custom recovery...please anyone any ideas

Well it should be as simple as holding down power and volume button down things but i guess you've already tried that method many times and it didnt work so you ask then, right?
If your phone in bootloop, you can flash tot files and it will back to stock re-root and re-install trwp.
If your phone still (or already) normal, you can download an app that can take you to custom recovery such as rebooter or power menu, thats it.

Yea phone isn't in bootloop, but if I put a Rom on phone I have no way to access the recovery because the volume and power won't take me to the recovery, so if it goes into bootloop I'm outta of luck I don't understand why the hardware buttons won't take me to the recovery, have you ever heard of this problem

brozillatyler said:
I've seen people are viewing this post if anyone know how to fix my problem please help or message me, the minimal adb won't work unless the device is turned on in usb. debugging, I can access my recovery with phone on easily but while it's powered off I should be able to get to custom recovery by pressing volume down and power while phone is off, but this method isn't working. So if I get in bootloop I can't get into custom recovery...please anyone any ideas
Click to expand...
Click to collapse
How long are you holding the vol down and power buttons? It should be around 15-20 seconds, then your system recovery screen comes up, you choose factory data reset, yes, and then TWRP comes up. If that isn't working - are you sure your buttons are working OK?

If the phone is turned off is there any other way to access it while phone is off?

Yes buttons work fine I hold it down and it just goes to Verizon screen ?

Actually when I hold it down it just stays on logo and reboots back to logo over and over and over

Actually I hold it down and it reboots to logo over and over its like there's no recovery there I don't understand lol

If anyone has any ideas or thoughts on how to fix this please let me know

brozillatyler said:
If anyone has any ideas or thoughts on how to fix this please let me know
Click to expand...
Click to collapse
OK... Does your phone boot into your ROM at all or are you bootlooped? If your phone boots, download an app called flashify and get the proper twrp .img file for your model and flash the image using flashify. It's an easy app to use - just make sure you're using the correct twrp .img for your phone...from here: http://forum.xda-developers.com/lg-g3/orig-development/recovery-twrp-touch-recovery-2-8-2-0-t2966129
If you are bootlooped I would suggest starting over and reflashing back to stock using the tot or kdz method. Here is a guide: http://forum.xda-developers.com/verizon-lg-g3/general/restore-verizon-to-stock-t2827878 I know it can be a pain to get the download tool working properly sometimes, so it may take some effort to get it working, but be patient (and read a lot if you get stuck) and you will get it working.
I don't know how you got borked...maybe it was an un-bumped twrp image? Either way, it is what it is, just try not to do it again Good luck.

Thanks much I'll try this

When this happened to me i would
1: remove battery
2: insert battery
3: hold volume down and lock button at the same time
4: When the LG Logo pops up release the lock button for 1 second (while still holding the volume down button), then press down again
5: A data reset/restore menu appears, and when you choose to reset/restore, TWRP boots to recovery.

jared1992 said:
When this happened to me i would
1: remove battery
2: insert battery
3: hold volume down and lock button at the same time
4: When the LG Logo pops up release the lock button for 1 second (while still holding the volume down button), then press down again
5: A data reset/restore menu appears, and when you choose to reset/restore, TWRP boots to recovery.
Click to expand...
Click to collapse
I tried this also not working how did you fix it?

brozillatyler said:
I tried this also not working how did you fix it?
Click to expand...
Click to collapse
Hmm. That worked for me. I'm not sure what next.

LG G3 Dead

Hi
I have LG G3 of AT&T that says D850.
I tried flashing it with a custom rom and after i restarted, it keep going into FASTBOOT mode and i couldnt open the phone.
I tried FlasTool to goto stock rom but it kept saying that the device model mismatched with the rom (i downloaded the ATT D850 dll and TOT).
After that i tried erasing the recovery, aboot, laf through fastboot. Just after i erased it my battery went out and phone goes off.
Now i cannot even turn on my phone. it show no screen at all.
However if i connect the USB, my pc detect something as a removeable device on computer.
Is there any way i can unbrick it?

Take battery off for few secs and put it back. Press power button and volume down at same time. When lg logo appears release and press again. You'll see white page with warnings. press 2x yes and you are now in twrp recovery mode.
Try factory reset. If doesn't help try install any rom from sd card or ext card.

bitpie said:
Take battery off for few secs and put it back. Press power button and volume down at same time. When lg logo appears release and press again. You'll see white page with warnings. press 2x yes and you are now in twrp recovery mode.
Try factory reset. If doesn't help try install any rom from sd card or ext card.
Click to expand...
Click to collapse
There is nothing appearing by pressing the power button.
After I erased boot, recovery from fastboot, the LG logo stops appearing and phone is behaving like its not even starting up.
Even in flashtool, it doesn't show any model number or imei now.
Earlier if was showing as D8559

power and vol down together. If nothing then i would search how to unbrick

bitpie said:
power and vol down together. If nothing then i would search how to unbrick
Click to expand...
Click to collapse
No luck with power and vol down or up.
Can you please search something else to unbrick it??

Try http://www.androidrootz.com/2014/07/how-to-unroot-lg-g3-all-variants.html?m=1
Or
http://forum.xda-developers.com/showthread.php?t=2772199

bitpie said:
power and vol down together. If nothing then i would search how to unbrick
Click to expand...
Click to collapse
bitpie said:
Try http://www.androidrootz.com/2014/07/how-to-unroot-lg-g3-all-variants.html?m=1
Or
http://forum.xda-developers.com/showthread.php?t=2772199
Click to expand...
Click to collapse
I tried both but flashtool is not recognizing my device, it shows no imei and pid.
Plus my device is d850 but it shows the error that device model is mismatched with the files however I downloaded the d850 files.

Dude you hard bricked it. I fell into the same exact situation. Came to flash stock but faulty win8 drivers caused my flash to fail at 14%...and everything went horribly wrong.
you can see a reply i wrote earlier that can help you:
http://forum.xda-developers.com/lg-...overy-mode-t3162652/post61991431#post61991431
BUT both links in the reply are to fixing a hardbrick for international D855 models and i am not sure if they will work with you.
Honestly your phone is not dead. There is many ways to fix it...if not now then eventually. You can find many threads with the same problem. Honestly i was sick to my stomach when it happened to me...you must be patient and make sure you read everything carefully before doing anything and I'm sorry this happened to you
Good luck!

H815 Soft bricked(?) adb shows device offline

Soo.... I messed up and edited the build.prop specificly the ro.build.type property. I tried to enable some debug options without validating if this would be a good idea (hint: it's not).
It seems that this has bricked my phone, the first LG splash screen shows up with the powered by android, and the second animation just keeps loading forever (making the phone very hot). And the LED flashes blue continously.
I did manage to get the device visible in ADB but it tells me that the device is offline so I can't do anything with it.
Tried booting in recovery mode (holding power button + volume down) but it just own't go into recovery mode.
Some extra info of what runs on my phone:
- version H815
- Android 6.0
- bootloader unlocked
- TWRP installed
- Rooted
- XPosed installed
Any idea on what I could try to fix it? (I guess stuck with a brick but oh well).
Thanks!

What do you mean, by it can't go into recovery mode?
Nothing is showing on screen?

Go to downlod mode either use lgup or lg flashtool to reflash the firmware that you are on... Do u remember which firmware you were on ?

Thanks for the replies!
Vortuks said:
What do you mean, by it can't go into recovery mode?
Nothing is showing on screen?
Click to expand...
Click to collapse
I meant that it just boots 'normally' when I press those buttons, it shows me the first LG logo and the second animation just hangs, whatever I do. I tried all sorts of combinations with the power button + volume down. (Keeping it pressed, briefly letting it go after the lg logo and repressing them).
jinderation said:
Go to downlod mode either use lgup or lg flashtool to reflash the firmware that you are on... Do u remember which firmware you were on ?
Click to expand...
Click to collapse
I don't know exactly which firmware I was on but I can't even get my phone into download mode (same as my other response, pressing volume up doesn't do anything).
The recovery and download mode used to work but I have no idea why it doesn't now...

When booting the phone, hold the power button and volume down button simultaneously, when LG logo appear, push the power button again. You should see the white screen, where you choose "YES" twice. Then the phone should kick you into TWRP or different recovery mode.

But how the hell editing build.prop can mess with recovery and download mode? Sounds incredible

Vortuks said:
But how the hell editing build.prop can mess with recovery and download mode? Sounds incredible
Click to expand...
Click to collapse
Maybe he has bootloop issue... ILAPO

Yeah I have no idea why the buttons aren't working for me. After a lot of searching I found this thread:
http://forum.xda-developers.com/g4/help/soft-bricked-device-t3248144
Which is basicly the same thing I'm experiencing, ADB comes online for just a brief second (kept spamming the reboot recovery command) and got in TWRP and I just flashed another which worked fine.
Odd thing is, even now my phone works I can't start recovery or download with the hardware buttons...... oh well, thankfully adb works as it's supposed to.
Thank you all for your help!

Random Boot loop ( AOKP latest nightly )

Hi fellow G4 users
So I was minding my own business trying to make an S8 theme for my device when the bootloop happened , I've tried rebooting countless times but my g4 still bootloops , ive also tried to boot into recovery via key combo it doesnt work ... lg up doesn't recognize my device , and while trying to restore through lg bridge it tells me that my phone is up to date ...
If it helps I was running the latest AOKP nightly , rooted with the latest magisk beta and no xposed , at this point I believe my G4 just turned into a a paperweight ...
Any suggestions are welcome

Enerial57 said:
Hi fellow G4 users
So I was minding my own business trying to make an S8 theme for my device when the bootloop happened , I've tried rebooting countless times but my g4 still bootloops , ive also tried to boot into recovery via key combo it doesnt work ... lg up doesn't recognize my device , and while trying to restore through lg bridge it tells me that my phone is up to date ...
If it helps I was running the latest AOKP nightly , rooted with the latest magisk beta and no xposed , at this point I believe my G4 just turned into a a paperweight ...
Any suggestions are welcome
Click to expand...
Click to collapse
I suggest you search steadfaster username and read his posts

I did some research but those posts are about TWRP could you be more specific ?

Enerial57 said:
Hi fellow G4 users
So I was minding my own business trying to make an S8 theme for my device when the bootloop happened , I've tried rebooting countless times but my g4 still bootloops , ive also tried to boot into recovery via key combo it doesnt work ... lg up doesn't recognize my device , and while trying to restore through lg bridge it tells me that my phone is up to date ...
If it helps I was running the latest AOKP nightly , rooted with the latest magisk beta and no xposed , at this point I believe my G4 just turned into a a paperweight ...
Any suggestions are welcome
Click to expand...
Click to collapse
try to get to the recovery once again. It is very difficult to get there for me and it is hit or miss.
What I do is hold power down button + power button, when the phone vibrates i just randomly press these two buttons till the recovery screen shows up.
Also you can get to the fastboot by pressing volume down on the latest Nougat bootlader.

tulen_kobi said:
try to get to the recovery once again. It is very difficult to get there for me and it is hit or miss.
What I do is hold power down button + power button, when the phone vibrates i just randomly press these two buttons till the recovery screen shows up.
Also you can get to the fastboot by pressing volume down on the latest Nougat bootlader.
Click to expand...
Click to collapse
Damn .. it worked
It got me to an LG factory reset screen and then to my twrp ! cheers thanks a lot !