Develop Bugs

[Q] Is my GPad bricked ?

Hello guys,
I am experiencing a hard issue with my GPad. I have the V500 model (bought in France), I have unlocked it, and rooted it (everything was fine).
I decided to install CM ROM, so I have installed TWRP using the loki method, booted in recovery, formatted everything except the external SD card (the CM ROM zip file was in it).
The installation of the CM ROM failed, it showed an error. So I decided to reboot the tablet but I am now stuck on the LG logo, nothing boots. When I decide to enter Recovery mode (without USB cable plugged), it shows the screen OpenRecoveryScript, and then the tablet restarts. I can't access the main menu (see pic 1).
The only thing I have managed to do is to access the tablet via ADB. Unfortunately I don't seem to have root access...and it shows an error message (see pic 2)
I have tried lots of things these past 2 days to try and restore the system but I feel really lost now !! :crying:
Would you mind helping me with my issue ?
Thank you very much in advance!

Follow the instructions in this thread to flash the stock ROM. The only difference is that the button sequence to enter Download Mode on the G Pad is to hold volume up and volume down (not just volume up) while plugging in the USB cable.

First off you didn't read. Second off you have the wrong recovery version installed. You need 2.6.3.1 to flash CM

Thank you coleam, I will try this method and give you an update!
Hope it'll work..!

same problem
comarinho said:
Thank you coleam, I will try this method and give you an update!
Hope it'll work..!
Click to expand...
Click to collapse
Hello, sorry for my stupid question but I feel lost:
I did the same you did, tried to install cm 11 but it showed me an error, so I rebooted...
Now It shows me LG logo's but I don't know how to enter in recovery mode, how did you do? thanks for helping

Nicolò98 said:
Hello, sorry for my stupid question but I feel lost:
I did the same you did, tried to install cm 11 but it showed me an error, so I rebooted...
Now It shows me LG logo's but I don't know how to enter in recovery mode, how did you do? thanks for helping
Click to expand...
Click to collapse
I met the question before, I resolved the question with guide in this bbs, But i can't find the thread again, So I write it with my poor english. Wish this can help you.
1. Press the volume down+power button
2. when you see the LG logo, relaese the power button,(Don't relaese the volume down button)
3. Press Volume up and power button immediately (Now, you press those three buttons, the volume down,volume up and power)
4. Wait a while, you can see the recovery mode.

Jack Zheng said:
I met the question before, I resolved the question with guide in this bbs, But i can't find the thread again, So I write it with my poor english. Wish this can help you.
1. Press the volume down+power button
2. when you see the LG logo, relaese the power button,(Don't relaese the volume down button)
3. Press Volume up and power button immediately (Now, you press those three buttons, the volume down,volume up and power)
4. Wait a while, you can see the recovery mode.
Click to expand...
Click to collapse
Thanks a lot, It works!

coleam said:
Follow the instructions in this thread to flash the stock ROM. The only difference is that the button sequence to enter Download Mode on the G Pad is to hold volume up and volume down (not just volume up) while plugging in the USB cable.
Click to expand...
Click to collapse
Thank you so much coleam, I've been able to restore the tablet and install CM ! :good:

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.

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!

Zenphone 2 bootloop , cant access recovery mode nor fastboot nor adb

Hello Guys
After doing deep search on this forum and try several unsuccessful solutions (recover mode, fast boot...). I decide to create new thread.:angel:
Symptom : A boot loop on Android Upgrade (There are 7 updates to apply).
I think, I know the cause but every solution found on this forum didn't succeed.
I tried to access recevey mode ( Power+Up, then release up ). --> When I release Up after vibration, I don't enter into recovery mode.
I tried to access my phone through fastboot or adb but, I have following message : "Wait for device". No detection so
Here is what I have done to be in this situation :
I've rooted my phone (thanks to forum explanations) --> No Problem
Installed this bull**** app "App Master" to freeze or put bloatware into trash (recoverable)
Everything was ok, since I noticed "Asus Start Manager" needed to update but was not compatible with my device. Strange isn'it.
So I've undertaken to restore frozen and removed app from app master. It asked me to restart and then, my 7 restored app seems to involve a big mess.
And now I can't Boot. NOte that android upgrade wants to suprisingly update 7 optimisations.
My next idea is to acces directly internal storage to remove 7 apk provoking boot loop.
Do you have better idea because if I remove internal storage, wararnty will be canceled and in addition I have no guaranty I'll able to read it.:crying:
Further more I hesitate to send it to vender since my device is rooted. They will answer it's my fault, and it's true sic !
As you understand I 'm quite desperate . IF someone can help me I'd be so grateful.
Thanks everybody and sorry for my english

Can you access to bootloader?(Power+ Vol Up and release power after vibration)
Sent from my Asus Zenfone 2 using XDA Free mobile app

atahanali_57 said:
Can you access to bootloader?(Power+ Vol Up and release power after vibration)
Sent from my Asus Zenfone 2 using XDA Free mobile app
Click to expand...
Click to collapse
Unfortunatly no.
bouhhh !!

Try to see here http://forum.xda-developers.com/zenfone2/general/unbricking-research-unbricking-method-t3162848

Ok i'll try it after work this evening.
I have nothing to loose so....

can u let me know. I failed with it.

U should have been able to access the boot loader at least.
while pressing and holding the volume up button , press and hold the power button until the set vibrates.
just when u feel the vibration RELEASE THE POWER BUTTON, NOT THE VOLUME UP BUTTON, 9as u have mentioned the oppssite in the first post) then it should go to boot loader menu.

I have a similar problem with ZF2. I access recovery mode by pressing the down arrow key and then the power button but the phone just reboots into recovery mode again. No dead android logo appears as others have suggested.

Try that : http://forum.xda-developers.com/showthread.php?t=3191244

Do volume up + power, once it vibrates press volume down rapidly about 3 times. Wait for a minute or two while on the Asus screen. Sometimes it will boot into recovery or it will vibrate and stay stuck. It worked for me.

A workaround
Hello Guys !
I've posted a workaround to my problem but I don't understand why it doesn't appear. I certainly made a mistake something.
Here is what I remember:
I tried several procedure described on asus-zenfone.com I finally found a soft which unlocked my recovery mode.
But finally it was maybe the fact to connect my device with usb which unlocked It (sorry I don't remember)
Once recovery menu was available, I downloaded official rom, copied it on an sdcard and installed it.
Good news, most of bloatware were desactivable !
Now, I have a device rid of the unworthy softs with an offical ROM.

In such situations I usually disassemble the phone and disconnect the power train of a few minutes. After that it booted recovery/bootloader.

croulipette said:
Hello Guys !
I've posted a workaround to my problem but I don't understand why it doesn't appear. I certainly made a mistake something.
Here is what I remember:
I tried several procedure described on asus-zenfone.com I finally found a soft which unlocked my recovery mode.
But finally it was maybe the fact to connect my device with usb which unlocked It (sorry I don't remember)
Once recovery menu was available, I downloaded official rom, copied it on an sdcard and installed it.
Good news, most of bloatware were desactivable !
Now, I have a device rid of the unworthy softs with an offical ROM.
Click to expand...
Click to collapse
how to do that? i still cant access recovery or fastboot

my phone is stuck in robot hijau with stomach openning position sleep with exclamation mark please help me.........

atahanali_57 said:
Can you access to bootloader?(Power+ Vol Up and release power after vibration)
Sent from my Asus Zenfone 2 using XDA Free mobile app
Click to expand...
Click to collapse
I am able to access bootloader . But when i choose recovery mode, the phone enters into a boot loop.
. Here is what i have done:
1. My device was already rooted.
2. Tried to install twrp custom rom using usb adb commands
3. It showed successful. I fast booted into my device. Switched it off and entered boot mode again. then selected Recovery. But I was never able to enter into recovery (The Robot with error was not at all displaying).
4. Then i searched google and found my boot loader was locked. I unlocked bootloader using
https://dl.xda-developers.com/3/4/0....zip?key=dEgXp67KVlqwn4BL-w1kWw&ts=1505837086
5. Now my flash screen is in white background. I can enter boot loader.
6. Then again i installed twrp via adb and selected recovery mode. But when i choose recovery, the phone goes into boot loop.
Please help.. One doubt: MY Phone is ASUS ZENFONE 2 Z00AD.

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: