Develop Bugs

LG G3 D855 FastBoot Mode Help!

I have a problem on my device I tried to replace rum and stuck in the middle and I turn on the phone it shows the logo of LG and stuck I also tried to burn Boot New Way rows CMD and after that I tried to reset the device I thought I left Rikover no Rikover so I can not install a device can a detailed guide of someone who knows it all because I am concerned that your device will not work Thanks in advance.

TheLgMan said:
I have a problem on my device I tried to replace rum and stuck in the middle and I turn on the phone it shows the logo of LG and stuck I also tried to burn Boot New Way rows CMD and after that I tried to reset the device I thought I left Rikover no Rikover so I can not install a device can a detailed guide of someone who knows it all because I am concerned that your device will not work Thanks in advance.
Click to expand...
Click to collapse
Try to go into recovery. Turn off your phone and turn your phone on with the power button + vol down. When the phone turns on,let go and press the same combo buttons again for a few seconds until it shows a factory reset. Click yes for both ( no it won't delete your data) and it will take you to TWRP

ןIt's still not working and I tried it yesterday and now it does not work because it is installed on the device Recovery So how do I solve this problem please help me!
Thanks in advance.

xmagiicsx said:
Try to go into recovery. Turn off your phone and turn your phone on with the power button + vol down. When the phone turns on,let go and press the same combo buttons again for a few seconds until it shows a factory reset. Click yes for both ( no it won't delete your data) and it will take you to TWRP
Click to expand...
Click to collapse
I can not go into recovery it does not give it to boot sends me what it is ??
Might not have installed correctly the operating system ??
sorry dable post

TheLgMan said:
I have a problem on my device I tried to replace rum and stuck in the middle and I turn on the phone it shows the logo of LG and stuck I also tried to burn Boot New Way rows CMD and after that I tried to reset the device I thought I left Rikover no Rikover so I can not install a device can a detailed guide of someone who knows it all because I am concerned that your device will not work Thanks in advance.
Click to expand...
Click to collapse

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.

Enter recovery on 20B?

Hi, I'm having a major problem getting into recovery via the power-on+vol-down key combination on MM (20A/20B) - under no circumstances can I get into recovery from cold boot - I can reboot into TWRP recovery when the phone's booted, but recently I've had a couple of bootloops which never enter the OS and so I'm stuffed - both times all I could do is use LGUP to reflash 20B kdz and then re-root etc etc. I'm assuming under MM the key sequence has changed, or is it because I have an unlocked bootloader the sequence is different? I've owned a G2 and G3 and know the "normal" sequence of hold power+vol-down, wait for the LG logo and release then power+vol-down again, but this doesn't seem to work on a Marshmallow G4 (I've tried 100 times with different wait periods on the release etc)....
Its a real PITA not being able to cold boot into TWRP/recovery so can someone advise what the sequence now is (and PLEASE don't reply to tell me its "hold power+vol-down, wait for the LG logo and release then power+vol-down again"!).
Thanks!

I have the same issue and I had been running into same situation to entirely reflash my phone in order to get it boot again. The key combination never worked for me while on 20B; really frustrating if you run into whatever problems requiring to recover through TWRP and not being able to do so.

key combination working me....
If not
adb reboot recovery
Or if phone rooted.
Play store rebooter app

russtyd said:
I've owned a G2 and G3 and know the "normal" sequence of hold power+vol-down, wait for the LG logo and release then power+vol-down again
Click to expand...
Click to collapse
And it never came to your mind, that maybe the entry to recovery might be different to an LG G3 or G2?
The way to enter recovery is:
Hold Vol- and Power until LG Logo appears
Release ONLY Power button for 1 sec
Then press it again and hold it
Recovery entered
I guess google can save lifes And nerves!!!!
Cheers bro
EDIT: Btw this has nothing to do with Marshmallow, Lollipop etc. It's the usual way to enter recovery on a G4 And I didn't read the OP entirely. It seems like you just had the wrong sequence. This one works for me on Masrhmallow 20B!

Follow_and_Feel said:
And it never came to your mind, that maybe the entry to recovery might be different to an LG G3 or G2?
I guess google can save lifes And nerves!!!!
Click to expand...
Click to collapse
Thanks... It did occur to me it might be different (which in the end is why I posted here!)... and I had googled, and the sequence is so stupidly close to the G2/G3 sequence its easy to see now the error of my ways (why the h*ll did LG have to change one key in the sequence)!
Thanks for the quick response Bro

russtyd said:
Thanks... It did occur to me it might be different (which in the end is why I posted here!)... and I had googled, and the sequence is so stupidly close to the G2/G3 sequence its easy to see now the error of my ways (why the h*ll did LG have to change one key in the sequence)!
Thanks for the quick response Bro
Click to expand...
Click to collapse
You're very welcome! I have to admit, that it's really stupid to change it slightly from model to model, yeah :laugh:
I had to google it myself and needed several attempts to get it right. But now we both know and we can enter recovery whenever we want :good: Merry Christmas and a happy new year bro

Follow_and_Feel said:
And it never came to your mind, that maybe the entry to recovery might be different to an LG G3 or G2?
The way to enter recovery is:
Hold Vol- and Power until LG Logo appears
Release ONLY Power button for 1 sec
Then press it again and hold it
Recovery entered
I guess google can save lifes And nerves!!!!
Cheers bro
EDIT: Btw this has nothing to do with Marshmallow, Lollipop etc. It's the usual way to enter recovery on a G4 And I didn't read the OP entirely. It seems like you just had the wrong sequence. This one works for me on Masrhmallow 20B!
Click to expand...
Click to collapse
Thanks for your heads-up. Unfortunately if i try this combination a screen appears "Factory data reset" asking "No (Exit)" or "Yes".
Now I would assume if I enter "Yes" it would boot into recovery, but I am not sure whether this will completely wipe my phone.
Can anyone confirm that I´m on the right path here?

GalaxyFan88 said:
Thanks for your heads-up. Unfortunately if i try this combination a screen appears "Factory data reset" asking "No (Exit)" or "Yes".
Now I would assume if I enter "Yes" it would boot into recovery, but I am not sure whether this will completely wipe my phone.
Can anyone confirm that I´m on the right path here?
Click to expand...
Click to collapse
Hold on. There are 2 options. If you installed recovery properly (I bet you did), indeed, clicking on "yes" will boot you into recovery. If you're a monkey, just like I was, and DIDN'T install recovery properly, yes, it will just wipe your data.
But that's the usual way to hardware-button-boot into recovery
How did you install it? There's an easy way to check if everything is set up correctly. Use this app to boot into your recovery from within android.
If it boots you into recovery then everything is set up straight and you can boot into recovery with hardware buttons a 100% by clicking "yes" and "yes" in the "stock" recovery.
EDIT: I know that's an awkward way, but it's the right 1 Cheers

Follow_and_Feel said:
Hold on. There are 2 options. If you installed recovery properly (I bet you did), indeed, clicking on "yes" will boot you into recovery. If you're a monkey, just like I was, and DIDN'T install recovery properly, yes, it will just wipe your data.
But that's the usual way to hardware-button-boot into recovery
How did you install it? There's an easy way to check if everything is set up correctly. Use this app to boot into your recovery from within android.
If it boots you into recovery then everything is set up straight and you can boot into recovery with hardware buttons a 100% by clicking "yes" and "yes" in the "stock" recovery.
EDIT: I know that's an awkward way, but it's the right 1 Cheers
Click to expand...
Click to collapse
It worked! Thank you mate! :good: :highfive:

GalaxyFan88 said:
It worked! Thank you mate! :good: :highfive:
Click to expand...
Click to collapse
You're very welcome :highfive:

Broken android when trying to enter recovery

Hi!
Today I unlocked bootloader and installed a custom rom and everything went fine.
Now, when I tried to flash the camera mod app, I couldn't enter TWRP. When trying to do it with the restart option it shows a broken android and I have to remove battery to get the phone running again. Manual (holidng down vol button + power button, as well as holding down buttons and releasing them for 1s) is also not working.
The phone works fine, but I would like to have TWRP working.
Can I just reinstall twrp like the first time?
Thank you

Jojo5678 said:
Hi!
Today I unlocked bootloader and installed a custom rom and everything went fine.
Now, when I tried to flash the camera mod app, I couldn't enter TWRP. When trying to do it with the restart option it shows a broken android and I have to remove battery to get the phone running again. Manual (holidng down vol button + power button, as well as holding down buttons and releasing them for 1s) is also not working.
The phone works fine, but I would like to have TWRP working.
Can I just reinstall twrp like the first time?
Thank you
Click to expand...
Click to collapse
What device? H811? Needs to know more about what software you flashed.
If you can get into fastboot you can push twrp there.

Hmmm i flashed xperia phones locked bootloader twrp on my h818 and i got this error too so it means it changed the recovery but can't start it?
Sent from my LG-H818

Vseprz said:
What device? H811? Needs to know more about what software you flashed.
If you can get into fastboot you can push twrp there.
Click to expand...
Click to collapse
H815 EUR. I installed the 2.8.7.0 and the 2.8.6.1 from https://dl.twrp.me/h815/. I tried it multiple times with these 2 versions and everytime I get the same error.
Connecting it to pc and entering recovery works without a problem, though.
Edit: I flashed Genisys 3.7

Jojo5678 said:
H815 EUR. I installed the 2.8.7.0 and the 2.8.6.1 from https://dl.twrp.me/h815/. I tried it multiple times with these 2 versions and everytime I get the same error.
Connecting it to pc and entering recovery works without a problem, though.
Edit: I flashed Genisys 3.7
Click to expand...
Click to collapse
So you can get into twrp with "adb reboot recovery"?
Your problem is you can not access it from neither the rebooter app nor the hardware buttons?
When using the harware buttons, hold vol down then press and hold power until the logo shows up. Release power for a second then press and hold again.

Vseprz said:
So you can get into twrp with "adb reboot recovery"?
Your problem is you can not access it from neither the rebooter app nor the hardware buttons?
When using the harware buttons, hold vol down then press and hold power until the logo shows up. Release power for a second then press and hold again.
Click to expand...
Click to collapse
Correct, I can get in twrp with "adb reboot recovery"
I was releasing both the volume and power buttons. Tried it again, but I came to a menu where I could only choose whether to delete all data (factory reset) or not. When choosing NO, the phone proceeded to boot normally.

Jojo5678 said:
Correct, I can get in twrp with "adb reboot recovery"
I was releasing both the volume and power buttons. Tried it again, but I came to a menu where I could only choose whether to delete all data (factory reset) or not. When choosing NO, the phone proceeded to boot normally.
Click to expand...
Click to collapse
That menu is perfectly normal. You have to select okay. Because you have a custom recovery it will not factory reset your phone but rather boot you into twrp.

Vseprz said:
That menu is perfectly normal. You have to select okay. Because you have a custom recovery it will not factory reset your phone but rather boot you into twrp.
Click to expand...
Click to collapse
Oh wow thank you very much. Everything works now

Stuck on boot animation

Hi,
I unlocked via LG dev my phone yesterday, it worked fine, then installed TWRP and SuperSU. Then I restarted my phone and now I do net get into any bootloader anymore. I can use the Hardware Button combination to get into IMEI display screen, but nothing more. I always get the screen Bootloader unlocked then get into LG Logo animation and that's it.
Nothing more.
Sometimes I can start over and over again and I can get my phone recognized by adb, but it says "unauthorized" or "offline".
What can I do now?
Or is it bricked and cannot be used anymore?
edit: I got it in that state that I am not authorized with adb.
I put my pub key in /data/misc/adb/adb_keys on the SD Card, but it seems that its not working...
bye LG

I can use LG Flash tool until the screen to flash the image, then it gets stuck on 0% on my phone and the connection is failed.
What else can I try?

lg022 said:
I can use LG Flash tool until the screen to flash the image, then it gets stuck on 0% on my phone and the connection is failed.
What else can I try?
Click to expand...
Click to collapse
Use the button combo to get into the factory reset screen. If twrp installed it will not reset but open twrp when going through the reset.
Sent from my LG-H815 using XDA Labs

steadfasterX said:
Use the button combo to get into the factory reset screen. If twrp installed it will not reset but open twrp when going through the reset.
Sent from my LG-H815 using XDA Labs
Click to expand...
Click to collapse
I can only use the combo to get into IMEI Display screen. Then I can get into boot animation screen. I cannot get into TWRP.
I can use lg flash tool 2014 and it will get until the screen on phone is at 0% copying, but it will not go further.
And I can get the phone to be regognized from adb, but it is unauthorized. What can I do that it will be authorized?? Is it possible to do that without being into andoir OS?

lg022 said:
I can only use the combo to get into IMEI Display screen. Then I can get into boot animation screen. I cannot get into TWRP.
I can use lg flash tool 2014 and it will get until the screen on phone is at 0% copying, but it will not go further.
And I can get the phone to be regognized from adb, but it is unauthorized. What can I do that it will be authorized?? Is it possible to do that without being into andoir OS?
Click to expand...
Click to collapse
Do you have tried this exactly?
The only valid and always working and supported way on getting with a hardware key combo(!) into twrp is using the factory reset screen.
Any other key combo like vol up + power depends on the kernel of the ROM! So it may work or not. Factory reset will work always.
For this you have to ensure that you have the latest twrp version really installed(!) because if twrp sits in recovery it will ignore the factory reset command when going through it.
Power down and pull out the battery. Do not forget to remove any USB cable.
Press power down and hold it down. Put battery back while keeping vol down pressed. Press power button and keep now both buttons pressed. When you see the LG logo the first time just release the power button for 1 second ( do not release vol down ) and then press power again and keep both pressed until you see the factory reset screen.
Once you see that screen just go through the steps like you would do a factory reset. If twrp is installed you will just open twrp without wiping any data. Again it is mandatory to have twrp installed otherwise it would really reset your device.
Click to expand...
Click to collapse
Sent from my LG-H815 using XDA Labs

Okay i has another hw Key Combo. I cant get into this Menu and Can Reset the Phone. I will get the Android Animation and the Phone restarts but now i am stuck on LG screen without Animation and the bootloader unlocked above.
Now what?

lg022 said:
Okay i has another hw Key Combo. I cant get into this Menu and Can Reset the Phone. I will get the Android Animation and the Phone restarts but now i am stuck on LG screen without Animation and the bootloader unlocked above.
Now what?
Click to expand...
Click to collapse
Go into download mode and use LG up to flash a stock rom seems to be the next step you should try.
Sent from my LG-H815 using XDA Labs

Download Mode?

steadfasterX said:
Go into download mode and use LG up to flash a stock rom seems to be the next step you should try.
Sent from my LG-H815 using XDA Labs
Click to expand...
Click to collapse
It is still the same problem. I can use the LG Flash tool, but it won't start the flash. It is stuck at 0% and the Flashing Tool says that the connection to server is failed.
I can still go into the reset menu, but it will do nothing.