Develop Bugs

Stuck on bootloop after KDZ-ing bricked Optimus G (Canadian version)

Hi guys,
I have an E973 (Canadian version) and recently it got bricked. So I decided to restore to stock using KDZ files. Thing is, once the KDZ process ended I was stuck on a boot loop so I used wipe.bat but everytime I use that file, I end up with this screen.
I can still get in Download mode and Recovery though. If I turn the phone off, it will just restart and get stuck on the LG logo again.. i've tried doing the whole process again and again but it's not working..
HELP PLEASE. (((
Thanks!

After KDZ do a factory reset

rogem_kk said:
After KDZ do a factory reset
Click to expand...
Click to collapse
how can I do a factory reset when I can't access to the phone itself? Can you please tell me the steps? I can only get in Download and recovery mod. Thanks!
Press and hold Volume Down Key + Power/Lock Key at the same time isn't doing anything..

MrRaph said:
how can I do a factory reset when I can't access to the phone itself? Can you please tell me the steps? I can only get in Download and recovery mod. Thanks!
Press and hold Volume Down Key + Power/Lock Key at the same time isn't doing anything..
Click to expand...
Click to collapse
Correct way is
Both volume keys pressed' than press power
You will get a fastboot kinda screen
Now press volume down twice
Now press power
USB cable should be un plugged
Also if this doesn't work, go to download mode and flash kdz again.
Sent from my GT-P3100 using Tapatalk HD

atifsh said:
Correct way is
Both volume keys pressed' than press power
You will get a fastboot kinda screen
Now press volume down twice
Now press power
USB cable should be un plugged
Also if this doesn't work, go to download mode and flash kdz again.
Sent from my GT-P3100 using Tapatalk HD
Click to expand...
Click to collapse
So, as you said, I turned off the phone, pressed on both volume keys THEN power button and it's not doing anything.. I've tried to flash Kdz multiple times before posting this topic.. I really don't know what to do..

When KDZ-ing, patience is a virtue.

MrRaph said:
So, as you said, I turned off the phone, pressed on both volume keys THEN power button and it's not doing anything.. I've tried to flash Kdz multiple times before posting this topic.. I really don't know what to do..
Click to expand...
Click to collapse
Try just Volume Down and Power, not both volume keys. Or just google Optimus G hard reset.

rogem_kk said:
Try just Volume Down and Power, not both volume keys. Or just google Optimus G hard reset.
Click to expand...
Click to collapse
http://www.hard-reset.com/lg-optimus-g-e973-hard-reset.html
Here is the tutorial for hard reset! Good luck!:good:

how to enter recovery using buttons?

Hi, I have an e980 stock rooted and unlocked with freegee, I can enter recovery from the ROM reboot menu but I can not figure out how to boot into recovery from power off, I followed a tutorial that says to press any key before the capacitive keys light on, but my lights never turn on.
Any help would be great, thanks very much.
Erik

ricco333 said:
Hi, I have an e980 stock rooted and unlocked with freegee, I can enter recovery from the ROM reboot menu but I can not figure out how to boot into recovery from power off, I followed a tutorial that says to press any key before the capacitive keys light on, but my lights never turn on.
Any help would be great, thanks very much.
Erik
Click to expand...
Click to collapse
I have been told, but I'm not sure, since I don't have my device yet, that holding the volume down button and home gets you recovery, but I agree that there really ought to be an FAQ with questions like:
How do I?
Get to download mode?
Get to recovery?
Factory reset?
Flash a stock ROM?
Flash a custom ROM/Recovery, etc.?

ricco333 said:
Hi, I have an e980 stock rooted and unlocked with freegee, I can enter recovery from the ROM reboot menu but I can not figure out how to boot into recovery from power off, I followed a tutorial that says to press any key before the capacitive keys light on, but my lights never turn on.
Any help would be great, thanks very much.
Erik
Click to expand...
Click to collapse
Hold power, volume up and home all at the same time. LG will disappear, as soon as it reappears release them and it will put you into the recovery menu.
Sent from my LG-E980 using XDA Premium 4 mobile app

holding power-volume down-home takes you to the hard reset then you press power to confirm reset or any other key to exit hard reset. I just need the combo to go to recovery from power off.
Thanks for the response, I'll keep waiting to see if someone else got it.
Erik
Edit: Awesome!! Psal217050 that did it, thank you very much!!!
Erik

Complete guide needed!
psal217050 said:
Hold power, volume up and home all at the same time. LG will disappear, as soon as it reappears release them and it will put you into the recovery menu.
Sent from my LG-E980 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Many thanks man.It's working...I was searching this for hours!
It is true that someone has to post a complete guide on this subject for different devices and generally how to install custom recoveries,Roms etc. on different devices. Till now there is not a complete guide for this. For example Lg G Pro users, like me, have to find out that they must use FreeGee to install a custom recovery to their phone.
I hope that someone will do it one day.
Again many thanks! +1 Thanks from me

psal217050 said:
Hold power, volume up and home all at the same time. LG will disappear, as soon as it reappears release them and it will put you into the recovery menu.
Sent from my LG-E980 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Does this apply to all types/versions of CWM recovery? Don't want to end up resetting my phone so am just using third party app.

Is there no recovery on our phones? I am stock no root or anything and can not go into recovery?
Sent from my LG-E980 using XDA Premium 4 mobile app

psal217050 said:
Hold power, volume up and home all at the same time. LG will disappear, as soon as it reappears release them and it will put you into the recovery menu.
Sent from my LG-E980 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
So I have been trying to do this for two days. Every time I begin from battery pull to pressing: vol up+home button+power button. First LG symbol shows then LED home button flashes and then device shuts off before second LG symbol.

Boziumtrip said:
So I have been trying to do this for two days. Every time I begin from battery pull to pressing: vol up+home button+power button. First LG symbol shows then LED home button flashes and then device shuts off before second LG symbol.
Click to expand...
Click to collapse
No need to press home key, just vol up and power key and release only power key once first lg logo appears on the screen, and make sure you do have a recovery, otherwise install rebooter app from market

dante_67 said:
No need to press home key, just vol up and power key and release only power key once first lg logo appears on the screen, and make sure you do have a recovery, otherwise install rebooter app from market
Click to expand...
Click to collapse
Thanks that helped. I got into recovery, now i just need to get it to see the .zip.

Hi,
I can boot into recovery mode with ROM Manager app but not with button sequence.....I have tried all methods except vol+pow+home... any Ideas or help would be much appreciated. phone is LG E980 AT&T version rooted.
Update:
I have tried now vol+home+power but still no success... LG logo appears 1st time but does not re-appear until i release the power button and then it boots into the original rom.

aqazi81 said:
Hi,
I can boot into recovery mode with ROM Manager app but not with button sequence.....I have tried all methods except vol+pow+home... any Ideas or help would be much appreciated. phone is LG E980 AT&T version rooted.
Update:
I have tried now vol+home+power but still no success... LG logo appears 1st time but does not re-appear until i release the power button and then it boots into the original rom.
Click to expand...
Click to collapse
Power+Vol Up, keep them pressed, and then when LG logo appears press volume down twice. Works for me.

not working...

aqazi81 said:
Hi,
I can boot into recovery mode with ROM Manager app but not with button sequence.....I have tried all methods except vol+pow+home... any Ideas or help would be much appreciated. phone is LG E980 AT&T version rooted.
Update:
I have tried now vol+home+power but still no success... LG logo appears 1st time but does not re-appear until i release the power button and then it boots into the original rom.
Click to expand...
Click to collapse
What kind of recovery do you have? I.e. stock, cwm, or twrp?

With my phone off, I press vol. up + home + power until the LG logo appears then disappears. At that point I let go of them. Never failed to get into recovery that way no matter what recovery I used.
Sent from my LG-E980 using XDA Free mobile app

hawkwind212 said:
What kind of recovery do you have? I.e. stock, cwm, or twrp?
Click to expand...
Click to collapse
Its stock recovery.
I don't know that my bootloader is locked or not, I bought this phone rooted. Can I flash recovery without knowing bootloader status? What risks are involved if the recovery installation goes wrong?

Why are you trying to go into the stock recovery? I mean you can't install anything with it as far as i know. If you're trying to install the custom recovery, you will need to unlock the bootloader first, then root the phone. It sounds like you are new at this stuff.
If you can still get into your OS, try root and install the custom recovery from there. Else if you don't have the OS anymore, you may have to reinstall the stock ROM by getting into the download mode.

my phone cannot boot into stock recovery mode by buttens even with some third party apps it boots. i dont know what the problem is??? I'll be thankful if someone can give me the exact procedure..
Lg optimus g pro E980

ShadySquirrel said:
Power+Vol Up, keep them pressed, and then when LG logo appears press volume down twice. Works for me.
Click to expand...
Click to collapse
No, this doesn't work either. It will boot into the AT&T

[Q] stuck in secure booting

hello
i have an unlocked boot loader and rooted optimus g E971. today i flashed rom kitkat 4.4 everything went well no issues. I decided to go back to my back up and reflashed my stock rom once again everything went well. i noticed i was still rooted when i went back to stock but wasn't when on 4.4 which is another topic later. anyways i decided to install rom manager to experiment and i had stability issues with it. i noticed the phone would crash and reboot with secure booting error, i was able several times to restart phone and use. Now the phone cracshed before i could delete rom manger and im stuck on secure booting error. I followed this guide http://forum.xda-developers.com/showpost.php?p=44874388&postcount=36 however the problem is i can't get into download mode or recovey... Phone does nothing but say secure booting error,boot certification verify. trying numerous times nope not happening .after reading several posts im assuming this is all because the bootloader was not unlocked after reflashing back to stock.. is my phone garbage or how can i fix...pls help :crying:

This means you didn't unlock the bootloader.
To enter download mode,turn off the phone,then press vol up+vol down at the same time and plug the micro usb cable to pc. You will enter download mode. After using kdz updater,make a hard reset by turning off phone,then press vol down+power at the same time,until the hard reset menu will appear. Press power twice to confirm and that's it. A new stock phone.
After this,you can root and unlock it again. Just remember to put somewhere safe the freegee folder after you unlock.
Sent from stock LG E975/smart phones,dumb people.

kimitza said:
This means you didn't unlock the bootloader.
To enter download mode,turn off the phone,then press vol up+vol down at the same time and plug the micro usb cable to pc. You will enter download mode. After using kdz updater,make a hard reset by turning off phone,then press vol down+power at the same time,until the hard reset menu will appear. Press power twice to confirm and that's it. A new stock phone.
After this,you can root and unlock it again. Just remember to put somewhere safe the freegee folder after you unlock.
Sent from stock LG E975/smart phones,dumb people.
Click to expand...
Click to collapse
i did all that for hours it will not go into download mode at all or recovery I've held for minutes tried different buttons and nothing

then you're in trouble...hardbricked..

duno why ppl are installing rom manager when we are having awesome app for recovery also lot more threads available too....!!

cfiluz said:
i did all that for hours it will not go into download mode at all or recovery I've held for minutes tried different buttons and nothing
Click to expand...
Click to collapse
Press just the power button for a minute
Now press both volume buttons and plug in the USB cable. It should go into download mode.
If not press power again for a minute and plug in charger and see if it shows regular charging animation.
Sent from my LG-E975 using Tapatalk

Help getting into recovery

I installed Mahdi ROM after being at CM 11 and I wanted to go back to CM 11.
I did a full wipe and restored using a NANDROID backup and the device won't boot up.
I tried some key combinations and Adb fastboot recovery but couldn't manage to get it into recovery, how do I do that? thanks
EDIT:ADB worked. Please close thread or delete it
EDIT 2: ADB Doesn't work now!
WHAT SHOULD I DO?
EDIT 3: Nevermind, got it!
for anyone who is in the same sitation like me:
hold power + volume down key until the backlight goes off (after failed boot)
then:
hold power + volume down until the LG logo appears
release power key (DO NOT release volume down)!
then press the power key + volume up key so you're holding all three buttons. a factory reset screen should come up. press power twice (maybe 3 times? dont remember) and then you should have recovery

EdenGottlieb said:
I installed Mahdi ROM after being at CM 11 and I wanted to go back to CM 11.
I did a full wipe and restored using a NANDROID backup and the device won't boot up.
I tried some key combinations and Adb fastboot recovery but couldn't manage to get it into recovery, how do I do that? thanks
EDIT:ADB worked. Please close thread or delete it
EDIT 2: ADB Doesn't work now!
WHAT SHOULD I DO?
EDIT 3: Nevermind, got it!
for anyone who is in the same sitation like me:
hold power + volume down key until the backlight goes off (after failed boot)
then:
hold power + volume down until the LG logo appears
release power key (DO NOT release volume down)!
then press the power key + volume up key so you're holding all three buttons. a factory reset screen should come up. press power twice (maybe 3 times? dont remember) and then you should have recovery
Click to expand...
Click to collapse
I don't get recovery....I get a factory reset. I am not sure if this is just deleting all data or is it really resetting the whole device to factory new?

Press yes and it gets you to TWRP or CWM, not factory reset. It is confusing
Sent from my iPhone using Tapatalk

EdenGottlieb said:
Press yes and it gets you to TWRP or CWM, not factory reset. It is confusing
Sent from my iPhone using Tapatalk
Click to expand...
Click to collapse
If I press the power button twice it wipes the tablet, I tried pressing it once and the tablet just restarted?
Can someone please tell me if I do a factory reset here does it even delete the TWRP? I want to send the tablet back. It was rooted and now it's not but I want to make sure that this factory reset takes it all the way back to stock.
I tried the LGMLauncher but after downloading and unpacking the software it stops and tells me it can't connect to the server?

Tried the LG tool?
Sent from my iPhone using Tapatalk

EdenGottlieb said:
Tried the LG tool?
Sent from my iPhone using Tapatalk
Click to expand...
Click to collapse
I did try the LG tool. It downloads the software and then unpacks it and then stops saying the there is no connection to the server. That's as far as it will go. I installed the LG drives but this has happened 4 times with no difference. I know some people are using this tool but it just won't work for me?

Can you try a different computer? It seems to be the only way to come back to perfect stock condition
Sent from my LG-V500 using Tapatalk

v500 Stuck Bootlooping - Cant Access TWRP

Hi all,
Have a brand new (to me) v500 that i bought and was able to root, flash twrp, and flash crdroid on yesterday. Today i flashed standard AOSP but now i'm stuck in a bootloop and cant figure out how to access twrp any more. Previously with crdroid on it i was accessing the bootloader/twrp via an app. So far all i can get to come up using hardware buttons is the download mode, and ADB isn't recognizing the device.
Any advice? I tried following a guide to revert to stock using the LG Support Tool but cant find the R&D tools to complete the tutorial.
Any help is appreciated.

Bump - $10 USD to whoever can help me solve this first

To enter twrp via buttons on v500:
Press and hold Power Button + Volume Down
When the LG logo shows up, release the power button only
Now press and hold the Power and Volume Up button while keeping your hold on the Volume Down button
When the factory reset screen appears, release your hold on all buttons
Follow On Screen Indications to make factory reset, but instead you enter twrp
Sent from my Pixel 3a using Tapatalk
---------- Post added at 12:58 PM ---------- Previous post was at 12:55 PM ----------
RUGGNATION said:
Hi all,
Have a brand new (to me) v500 that i bought and was able to root, flash twrp, and flash crdroid on yesterday. Today i flashed standard AOSP but now i'm stuck in a bootloop and cant figure out how to access twrp any more. Previously with crdroid on it i was accessing the bootloader/twrp via an app. So far all i can get to come up using hardware buttons is the download mode, and ADB isn't recognizing the device.
Any advice? I tried following a guide to revert to stock using the LG Support Tool but cant find the R&D tools to complete the tutorial.
Any help is appreciated.
Click to expand...
Click to collapse
To enter twrp via buttons on v500:
Press and hold Power Button + Volume Down
When the LG logo shows up, release the power button only
Now press and hold the Power and Volume Up button while keeping your hold on the Volume Down button
When the factory reset screen appears, release your hold on all buttons
Follow On Screen Indications to make factory reset, but instead you enter twrp
Sent from my Pixel 3a using Tapatalk

RUGGNATION said:
Hi all,
(---cut---) So far all i can get to come up using hardware buttons is the download mode, and ADB isn't recognizing the device.
Any advice? I tried following a guide to revert to stock using the LG Support Tool but cant find the R&D tools to complete the tutorial.
Any help is appreciated.
Click to expand...
Click to collapse
Have you tried LG Flash Tool 2014?

b0li said:
To enter twrp via buttons on v500:
Press and hold Power Button + Volume Down
When the LG logo shows up, release the power button only
Now press and hold the Power and Volume Up button while keeping your hold on the Volume Down button
When the factory reset screen appears, release your hold on all buttons
Follow On Screen Indications to make factory reset, but instead you enter twrp
Click to expand...
Click to collapse
Using that combination of buttons doesnt bring up any menus, i see the LG logo and then either holding the power button shuts down the tablet or it tries booting into Android, which then loops.

ze7zez said:
Have you tried LG Flash Tool 2014?
Click to expand...
Click to collapse
I did but ive been unable to get it to work and/or find the right file to load into it.

RUGGNATION said:
I did but ive been unable to get it to work and/or find the right file to load into it.
Click to expand...
Click to collapse
V50020f_00.kdz
Download LG Official Stock ROM / Firmware [U.S.]
or
Enter the serial number XXXXXXXXXXXXX into the link
http://csmg.lgmobile.com:9002/csmg/b2c/client/auth_model_check2.jsp?esn=LGXXXXXXXXXXXXX
and you will receive a link to the ROM.

ze7zez said:
V50020f_00.kdz
Download LG Official Stock ROM / Firmware [U.S.]
Click to expand...
Click to collapse
Thanks for the link, so far i havent been able to get my computer to recognize the usb connection when in download mode. I'm using the OEM cable and downloaded the drivers in the LG Flash Tool thread, but no luck.

RUGGNATION said:
Using that combination of buttons doesnt bring up any menus, i see the LG logo and then either holding the power button shuts down the tablet or it tries booting into Android, which then loops.
Click to expand...
Click to collapse
b0li gave an invalid TWRP entry instruction.
Read How to enter recovery mode using key combination post #2.
In TWRP, do advanced wipe without internal storage.
Before you flash the ROM, check its checksum carefully to see if it is identical to the one on the server.

ze7zez said:
b0li gave an invalid TWRP entry instruction.
Read How to enter recovery mode using key combination post #2.
Click to expand...
Click to collapse
I tried the corrected key combination, but no menus pop up, I either hold the power and vol up/down buttons until the device turns itself off, or it boots to the Android logo and then loops.

RUGGNATION said:
I tried the corrected key combination, but no menus pop up, I either hold the power and vol up/down buttons until the device turns itself off, or it boots to the Android logo and then loops.
Click to expand...
Click to collapse
It turns off because you hold 3 keys and don't release them.
You must press them simultaneously and then release them immediately.

ze7zez said:
It turns off because you hold 3 keys and don't release them.
You must press them simultaneously and then release them immediately.
Click to expand...
Click to collapse
That did the trick, can't believe it was just because i wasn't pressing the keys exactly right. I was able to get back into TWRP and reflash the ROM so now everything is working. Still having trouble getting usb to recognize the device, so i can't flash anything else on there at the moment.
PM me your paypal or venmo

RUGGNATION said:
Still having trouble getting usb to recognize the device, so i can't flash anything else on there at the moment.
Click to expand...
Click to collapse
Perhaps the problem is not the usb socket or cable.
Blow out the socket with compressed air and try again.
If that doesn't work, then your OS may be a problem.
In this case, try [LIVE-ISO][FWUL]adb/fastboot without any installation and driver issues.

I tried another computer too, same result - the tablet recognizes the connection so it starts charging, and despite the USB settings in dev options being set for MTP, it doesn't connect.
I'll try your link later, but it seems like its a problem with the tablet compared to computer.

RUGGNATION said:
I tried the corrected key combination, but no menus pop up, I either hold the power and vol up/down buttons until the device turns itself off, or it boots to the Android logo and then loops.
Click to expand...
Click to collapse
You can always transfer data using microSD or via WiFi tethering.
If via WiFi, I recommend the SwiFTP server - simple and reliable.

I tried to update Lineage and am running into an issue now where as soon as the LG logo pops up, a message that says "Secure booting error! Cause: boot certification verify" pops up almost immediately so I can't use the hardware buttons to get into TWRP. Any ideas around this one? Thanks again all!