Develop Bugs

[Q] Bricked phone, can't get to download mode [Solved]

Hello everybody,
I was using my Optimus G for one month, I was rooted it and installed CM 10.2, today I decided to install Custom Kernel (this one: http://forum.xda-developers.com/showthread.php?t=2312735) and I did it via CWM (I think that was my mistake). So now I'm getting kernel crash and I can't boot. I know, that I can unbrick my device using KDZ, but how to get into download mode? I'm pressing vol+up and vol+down and than I'm plugging my optimus G to USB but nothing happens. Any ideas? Thank you very much.
Edit: I found, how to enter to download mode, but maybe it's possible to enter to the CWM and just flash my CM 10.2 ROM again so all my apps could stay in my phone?
Edit 2: everything works, huge thanks to Jishnu Sur . What I did? Just enter to CWM (enter to fastboot, using vol+ and power buttons and than, enter to recovery - just click your vol- button many times and than click power button) and flash your ROM again, without wiping any data and etc.

Something wierd goind on with my phone after unlocking the bootloader (freeGee)

Sup guys. I just got an Optimus G (E977). Amazing phone, I dont have anything negative to say about it, Im very happy.
However, Im having a problem. I just rooted my phone and tried to unlock the bootloader with FreeGee. The App tells me everything worked, but when I try to enter the RECOVERY (edited) nothing happen. The LG icon shows up, goes away, shows up again and the phone boots to the Android. Its like there was no recovery at all
I already tried volume down + power, volume up + power, both + power, it simple wont work
Any ideas?
Thank you
Edit: Btw, when I restored the phone by freegee it start working again with the factory recovery

use quicboot app from praystore to enter cwm.you don't need to enter bootloader mode,in fact there is no such state.you have fastboot,recovery or download mode.

kimitza said:
use quicboot app from praystore to enter cwm.you don't need to enter bootloader mode,in fact there is no such state.you have fastboot,recovery or download mode.
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Sorry, I meant RECOVERY. My bad. So I must use that app to get on recovery?
Thank you

well,it's easier. you don't have to turn off the phone,then press buttons .

kimitza said:
well,it's easier. you don't have to turn off the phone,then press buttons .
Click to expand...
Click to collapse
Will try that later, thanks bro

Tried tat but my phone went to a boot loop.Itshowed the CM logo but nothing happened. Tried to go to recovery again and nothig. I had to reflash a KDZ to get my phone working again

[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

[Q] Can't boot to recovery using buttons

Can't boot to TWRP after turning off.
From TWRP manager no problem, but I'd like to be able to boot instantly to recovery or download (fastboot).
Everyone uses the Power + Vol Down keys...and works on every video from youtube...but with me it doesn't.
Also I can't boot to fastboot any way I tried (hardware or software ways)
Any ideas???
Thanks

When you do the button method, do you let go at the lg logo then immediately press again? If so, don't let go. Just keep holding past the logo.

You can't boot also to download mode you say ? Which method you used to install recovery ?
Your G3 model ? D855 ?

Wipe ROM and reinstall Android in LG Smartphone

Hi, I'm trying to find a way to try to recover an LG D680 smartphone. I have a weird problem with it. It used to get stuck on LG's Logo boot. I used Download Mode and LG Mobile Tool to fix it and update it. Everything was ok but 1 month later this happened again, but this time it cannot get fixed.
I tried to reinstall software through KDZ and flash tools (2014) in Normal and CSE mode. I tried Iusacell (AT&T) images (V10A_, V10B_, V20A_ and V20B_) wich are Jelly and Kitkat versions of images. Last I tried to reinstall with V20A_ Factory Free image and still problem, but now there's another problem. It seem that there are not really hardware issues since device is correctly recognized in Windows System, can enter Download Mode, LG Flash Tool can still manipulate hardware (Install, reboot and finish install). The new problem is that even after reinstalling any of the images it keep looped and stuck at the "Android Hard Reset" icon, the one of the Android with the red triangle.
I tried using fastboot and adb but devide is not recognized by fastboot device even after installing drivers.
Is there another way to completely wipe ROM and install System and Boot clean? I already have system.img and boot.img files, but can't find a way to do this nor what I do works.

Zoditu said:
Hi, I'm trying to find a way to try to recover an LG D680 smartphone. I have a weird problem with it. It used to get stuck on LG's Logo boot. I used Download Mode and LG Mobile Tool to fix it and update it. Everything was ok but 1 month later this happened again, but this time it cannot get fixed.
I tried to reinstall software through KDZ and flash tools (2014) in Normal and CSE mode. I tried Iusacell (AT&T) images (V10A_, V10B_, V20A_ and V20B_) wich are Jelly and Kitkat versions of images. Last I tried to reinstall with V20A_ Factory Free image and still problem, but now there's another problem. It seem that there are not really hardware issues since device is correctly recognized in Windows System, can enter Download Mode, LG Flash Tool can still manipulate hardware (Install, reboot and finish install). The new problem is that even after reinstalling any of the images it keep looped and stuck at the "Android Hard Reset" icon, the one of the Android with the red triangle.
I tried using fastboot and adb but devide is not recognized by fastboot device even after installing drivers.
Is there another way to completely wipe ROM and install System and Boot clean? I already have system.img and boot.img files, but can't find a way to do this nor what I do works.
Click to expand...
Click to collapse
If it is looping on LG's boot animation, then you should boot into stock recovery and do a factory reset from there - saved me from sending my E988 to service last time I flashed stock. Try one of these recovery combos: Vol Up + Power, Vol Up + Vol Down + Power, Vol Up + Home + Power, one of those should work. My E988 uses Vol Up+ Power - have to press both while device is powered off, and keep them pressed until capacitive buttons flash twice. Not sure how will that work on D680 though (is that a G Pro Lite?)

ShadySquirrel said:
If it is looping on LG's boot animation, then you should boot into stock recovery and do a factory reset from there - saved me from sending my E988 to service last time I flashed stock. Try one of these recovery combos: Vol Up + Power, Vol Up + Vol Down + Power, Vol Up + Home + Power, one of those should work. My E988 uses Vol Up+ Power - have to press both while device is powered off, and keep them pressed until capacitive buttons flash twice. Not sure how will that work on D680 though (is that a G Pro Lite?)
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Yep! It's an G Pro Lite. I'm still trying some of th combinations. What is stock recovery? Should it show more options than just hard reset?

Zoditu said:
Yep! It's an G Pro Lite. I'm still trying some of th combinations. What is stock recovery? Should it show more options than just hard reset?
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Click to collapse
If it's anypart similar to ones found on E98x, it will have only hard reset, update install and reboot options. I really don't know much about Lite series, probably there is more info about recovery in their subforum here.