Develop Bugs

LG Optimus G Root/unlock isues

Hey fellow LG Optimus G users. Late last month I recently purchased the LGOG on Sprint and came here to seek a root guided. I didn't know that LG locks the bootloader on their devices. I came here, found root guides for 4.0.1 ZV9, 4.1.2 ZVB, AIO, Universal root and to be honest, the rooting portion was fairly simple, but its's unlocking/flashing where I have an issue.
I'm on my third phone. The first phone(unaware of it needing an unlock) I rooted and unlocked using the Universal method and tried to flash a ROM and bricked my phone. THe second time I used AIO root/unlock and my phone still messed up. Here I am once again and I really want to have my phone rooted and unlocked correctly so I can flash Paranoid Android(I like the hybrid ability it offers) but I am too skeptical about it now as I don't want to be out of a phone again. As far as Rooting goes, I feel I can just as easily use the universal method and gain root, but with unlocking, what do I have to do if the AIO way isn't correct for 4.1.2 ZVB? I'm not the best at using ADB and commands lines of the sort but if there is an alternative please help me out. Do I need a different tool? Is it availible on Google Play or is it all on PC?

Look over the guides again.
Use fiddy619 Universal root.
Download FreeGee from the Playstore to unlock.
Profit
Sent from my LG-LS970 using xda premium

engine95 said:
Look over the guides again.
Use fiddy619 Universal root.
Download FreeGee from the Playstore to unlock.
Profit
Sent from my LG-LS970 using xda premium
Click to expand...
Click to collapse
this is exactly what u want. to add to what engine said... if you reboot after freegee and end up stuck at a black screen(quick lg logo then black).. you are softbricked.. BUT THIS IS FIXABLE. so if the "worst" was to happen.. let us know and we'll get you sorted.

engine95 said:
Look over the guides again.
Use fiddy619 Universal root.
Download FreeGee from the Playstore to unlock.
Profit
Sent from my LG-LS970 using xda premium
Click to expand...
Click to collapse
autoprime said:
this is exactly what u want. to add to what engine said... if you reboot after freegee and end up stuck at a black screen(quick lg logo then black).. you are softbricked.. BUT THIS IS FIXABLE. so if the "worst" was to happen.. let us know and we'll get you sorted.
Click to expand...
Click to collapse
Thanks alot guys, I guess I'll give it another go using this method. If the "worst" is to happen, should I just reply back here? Or PM one of you guys?

Either one of us, and either way is fine. Although autoprime is much more knowledgeable than I. (Not open to debate just in case)
Sent from my LG-LS970 using xda premium

engine95 said:
Either one of us, and either way is fine. Although autoprime is much more knowledgeable than I. (Not open to debate just in case)
Sent from my LG-LS970 using xda premium
Click to expand...
Click to collapse
Just unlocked my phone(went and bought the app to support shelnutt). Turned off the phone and then boot back up a clean boot, no error messages. I actually face palmed at how simple this turned out to be. Thanks guys :good:, glad to be apart of a helpful community. I'll play around in TWRP for a while to check its feats.
Edit: Now that my phone is rooted AND unlocked, am I able to remove the bloat apps without issue? I believe this caused my phone to have issues the first go round.

Hack and flash away til your hearts content.
Make sure you backup EFS, and make a TWRP backup and save them to your computer in case your SD gets wiped.
Sent from my LG-LS970 using xda premium

Phone not booting up. PL HELP !
Hello guys !
I have done something terrible and phone is not booting up part recovery now.
I had rooted the phone with one-click universal method without any hasstles and then try to reboot into bootloader by pressing VolDown+Power button.
Eventually ended up rebooting in original android recovery. I tried rebooting with option in that but it was not responding.
While trying it out, I mistakenly wiped cache partition.
Now NO MATTER WHAT COMBINATION I TRY, phone doesn't boot up past the recovery.
Please help me sort out this mess. I need to sell the phone.

I wipe my cache partition all the time. I am rooted but still locked (I don't think that will last much longer). Anyways, in the android recovery with jelly bean, I found that you no longer use the power button for selecting or confirming. It's now done using the menu button below your screen (on the right) . At least that's how it works for my phone.
Sent from my LG-LS970

autoprime said:
this is exactly what u want. to add to what engine said... if you reboot after freegee and end up stuck at a black screen(quick lg logo then black).. you are softbricked.. BUT THIS IS FIXABLE. so if the "worst" was to happen.. let us know and we'll get you sorted.
Click to expand...
Click to collapse
Autoprime,
The "worst" is what happened to me. Can you please help me get out of this situation?

Not autoprime but...
Need some details
What is your phone doing?
Can you get into recovery?
Can you get into DL mode?
Sent from my LG-LS970 using xda premium

engine95 said:
Not autoprime but...
Need some details
What is your phone doing?
Can you get into recovery?
Can you get into DL mode?
Sent from my LG-LS970 using xda premium
Click to expand...
Click to collapse
When I power on the phone I get the LG logo and from there it goes straight to the "fastboot mode" screen, but I can't access the menus. I can also get the backlight screen, but when I connect it to the PC it doesn't recognize the device. I can also access "download mode" on the phone. Please forgive me if I'm not giving a lot of detail. This is my first root ever.

So you can get into fastboot? Did you unlock also? If so, press volume down twice then power. That should get you into recovery.
Sent from my LG-LS970 using xda premium

engine95 said:
So you can get into fastboot? Did you unlock also? If so, press volume down twice then power. That should get you into recovery.
Sent from my LG-LS970 using xda premium
Click to expand...
Click to collapse
what engine95 said. Worst case, LGNPST back to stock, and try again. there is a modified ZVB bin floating around that makes you unlocked, and once you boot into recovery, will root you. its the easiest root/unlock ive ever seen. good luck!
remember, the IRC channel is FULL of great help.

i just followed the steps and now im on lg screen computer not reading the phone and cant get in to fastboot or recovery?

aneyboy said:
i just followed the steps and now im on lg screen computer not reading the phone and cant get in to fastboot or recovery?
Click to expand...
Click to collapse
Did you use Fiddy69 root method followed by installing FreeGee from the Play Store? If not you can try LGNPST to stock. Or just take it back for an exchange
Sent from my LG-LS970 using Tapatalk 2

aneyboy said:
i just followed the steps and now im on lg screen computer not reading the phone and cant get in to fastboot or recovery?
Click to expand...
Click to collapse
ive had 4 softbricks today from trying various things...one involved 20 mins of panicked button pushing. keep both volume buttons held down and press the power button for long periods of time then waiting a min or so to see if it comes up to download. Hopefully you will eventually time it right and see the blessed download screen...from there get teenybin's bin file for whatever version you have and use that...its a godsend
http://forum.xda-developers.com/showthread.php?p=40176796 - teenybin recoveries

[Q] PLAY bricked?

Hi, so I tried to flash (using fastboot) DooMsKernel v14, it all looked nice and good,
but after that I tried to restart/enter recovery mode, and nothing happened.
My PLAY only reacts to power button by vibrate, and can enter to fastboot.
I tried to flash it again and flash another ROM (CM9), nothing worked.
Any help please?

Its fairly impossibly to brick the play. Since it can get into fastboot bootloader must be unlocked flash both kernel and Rom to stock.
Sent from my LT28i using xda app-developers app

psxpetey said:
Its fairly impossibly to brick the play. Since it can get into fastboot bootloader must be unlocked flash both kernel and Rom to stock.
Sent from my LT28i using xda app-developers app
Click to expand...
Click to collapse
I tried to flash ReFlash ftf using flashtool, but at some point it said an error when it tried to push a packet to the phone, I can't remember what it was. That was yesterday. I charged the phone all night because I thought it was battery problem, and today I tried flashing again but when I connect the phone in flash mode it connects it on fastboot tmode. Tried pulling the battery and connect again, idnt work.
I realy dont know what to do..
Edit:
I tried again and I can connect to flash mode, will try to flash the ftf again.

YechiamTK said:
I tried to flash ReFlash ftf using flashtool, but at some point it said an error when it tried to push a packet to the phone, I can't remember what it was. That was yesterday. I charged the phone all night because I thought it was battery problem, and today I tried flashing again but when I connect the phone in flash mode it connects it on fastboot tmode. Tried pulling the battery and connect again, idnt work.
I realy dont know what to do..
Edit:
I tried again and I can connect to flash mode, will try to flash the ftf again.
Click to expand...
Click to collapse
Ok, so I succeeded. Now I'm trying to update from update center to .42 (I have .238), but the installation fails.
1. Any help on that?
2. Did the ReFlash unrooted my phone?

YechiamTK said:
Ok, so I succeeded. Now I'm trying to update from update center to .42 (I have .238), but the installation fails.
1. Any help on that?
2. Did the ReFlash unrooted my phone?
Click to expand...
Click to collapse
1.it is because of unlocked bootloader
2.yes it unrooted ur phone
Sent from my R800i using xda premium

raminta said:
1.it is because of unlocked bootloader
2.yes it unrooted ur phone
Sent from my R800i using xda premium
Click to expand...
Click to collapse
So what am I suppose to do? root again and try to flash different kernel?
If the answer is yes, than back to the first thing I did, why I came to this problem - I tried to flash a kernel,
so can u tell me what is the safest way to do it (so I wont have to deal with this problem all over again)?

YechiamTK said:
So what am I suppose to do? root again and try to flash different kernel?
If the answer is yes, than back to the first thing I did, why I came to this problem - I tried to flash a kernel,
so can u tell me what is the safest way to do it (so I wont have to deal with this problem all over again)?
Click to expand...
Click to collapse
You have an unlocked bootloader just flash doom the kernel and put a Rom on your sd to install. Then first time you boot you press the back button or the menu one or something.and then doom kernel will let you select a Rom.
Sent from my LT28i using xda app-developers app

psxpetey said:
You have an unlocked bootloader just flash doom the kernel and put a Rom on your sd to install. Then first time you boot you press the back button or the menu one or something.and then doom kernel will let you select a Rom.
Sent from my LT28i using xda app-developers app
Click to expand...
Click to collapse
Didn't really get it..
U say I should flash doomkernel and install new ROM?
Any instructions on how to do it the SAFEST WAY? I don't want to have boot problems again..

YechiamTK said:
Didn't really get it..
U say I should flash doomkernel and install new ROM?
Any instructions on how to do it the SAFEST WAY? I don't want to have boot problems again..
Click to expand...
Click to collapse
The safest way is flashing kernel with flashtools
I think ur problem of boot is because of corrupted download download the kernel again and try to flash it if doesn't worked try an other kernel for example lupus kernel
Sent from my R800i using xda premium

raminta said:
The safest way is flashing kernel with flashtools
I think ur problem of boot is because of corrupted download download the kernel again and try to flash it if doesn't worked try an other kernel for example lupus kernel
Sent from my R800i using xda premium
Click to expand...
Click to collapse
Ok, so now I try to root the PLAY again, using OneClickRoot. Only one problem - it gets stuck in "Verify Rooting Compatibility"..
And I also tried OneClickRoot with my friend`s phone (LG Optimus Black) - same result, stuck in "Verify Rooting Compatibility"..
Is this OneClickRoot`s problem`s, or it just suppose to take long time, or what?

raminta said:
The safest way is flashing kernel with flashtools
I think ur problem of boot is because of corrupted download download the kernel again and try to flash it if doesn't worked try an other kernel for example lupus kernel
Sent from my R800i using xda premium
Click to expand...
Click to collapse
The firat time you start doomkernel it will seem like your phone is bricked as soon as you press power atart pressing the back button and a screen will come up that will allow you to install a Rom off the sd card. I thought mune was bricked firat time. When doom starts the blue led starts its not flash its just what it does.
1. Turn on the phone
2. Press back button until Rom flashing screen pops up
3. Install Rom from sd
4. Boot rom
Sent from my LT28i using xda app-developers app

YechiamTK said:
Ok, so now I try to root the PLAY again, using OneClickRoot. Only one problem - it gets stuck in "Verify Rooting Compatibility"..
And I also tried OneClickRoot with my friend`s phone (LG Optimus Black) - same result, stuck in "Verify Rooting Compatibility"..
Is this OneClickRoot`s problem`s, or it just suppose to take long time, or what?
Click to expand...
Click to collapse
Most custom Roms are prerooted, so if you're going to install one anyway, you don't have to root your Play manually.
If you can't flash .ftf through flashtool, you could try another download source, had a similar problem a few months ago, many downloads simply didn't work. And using another USB port on my computer fixed my problem with the flash process getting stuck while flashing with flashtool, was strange, but solved the problem.
By the way, if this .238 is android 2.3.4 it probably can't be rooted, if you want stock rom with root you have to downgrade to 2.3.3

So is it qorking yet?
Sent from my LT28i using xda app-developers app

psxpetey said:
So is it qorking yet?
Sent from my LT28i using xda app-developers app
Click to expand...
Click to collapse
Well, I'm rooted with .238, but my problem is that google apps don't work - it tries to download apps and then stop the ddownload, without any error (Every app)..
So I thought I would try to install a costum ROM, problem is - I cant install recovery.. Tried a few methods, all didn't work.. 2 option, either I didn't succeed on download and installing the recovery, or I can't boot into it..
Any help pls?

[Q] Softbrick help requested - fixes not working

[FIXED]
After installing CWM via FreeGee on my G Pro F240L, the device became softbricked (booting only into CWM). I tried various methods to unbrick. including the R&DTool flashing method, but encountered various errors, including the infamous battery error. When I looked at the device this morning, however, it had rebooted itself overnight and was now stuck on the LG boot logo, with the following small text in the top left corner:
Secure booting Error!
Cause: boot certification verify
The device no longer appears to be recognized in adb from my PC, and though it is still capable of booting into download mode I have had no luck with the methods posted by others for bypassing the battery-level error in the Support Tool/flasher. If anyone could help, that would be immensely appreciated.

Can you still get into recovery? And when in recovery does adb then detect the device?

chdrummerdude said:
Can you still get into recovery? And when in recovery does adb then detect the device?
Click to expand...
Click to collapse
No, I can't enter recovery, the only method of modifying firmware available to me seems to be Download Mode.

NuclearWynter said:
No, I can't enter recovery, the only method of modifying firmware available to me seems to be Download Mode.
Click to expand...
Click to collapse
So you have tried flashing back to stock using the flash tools? It's not ideal but it get the phone back up and running. I own a e980 so im not familiar with the battery error you speak of.

chdrummerdude said:
So you have tried flashing back to stock using the flash tools? It's not ideal but it get the phone back up and running. I own a e980 so im not familiar with the battery error you speak of.
Click to expand...
Click to collapse
Yep, tried several variations of the flashtool method. The battery error: at about 50% through the flashing process, it throws an error essentially saying the phone's battery needs to be at 100% in order to continue, problem being that the error comes up even when the battery is at 100% - and also comes up if I try with the battery removed from the phone.

Has anyone experienced a similar issue? I'm getting quite desperate.

Man if you could just get adb enabled.
Sent from my SAMSUNG-SM-N900A using xda app-developers app

chdrummerdude said:
Man if you could just get adb enabled.
Sent from my SAMSUNG-SM-N900A using xda app-developers app
Click to expand...
Click to collapse
That would certainly make things easier, but it seems impossible to do seeing as the phone either can't boot past the logo, or only into Download Mode.

NuclearWynter said:
That would certainly make things easier, but it seems impossible to do seeing as the phone either can't boot past the logo, or only into Download Mode.
Click to expand...
Click to collapse
Add my e980 to the list =/ just hit this problem as well. I have it worse though since I don't have a windows PC. Can't even get into recovery. All I get is the Boot up screen with the same message you received.

chdrummerdude said:
Man if you could just get adb enabled.
Sent from my SAMSUNG-SM-N900A using xda app-developers app
Click to expand...
Click to collapse
hello
i have f240l i returned back to stock backup which i made CWM i received an OTA i accepted the phone restarted and after that its stuck in recovery mode only. what can i do to make this work again

I also used Freegee and it messed up my device. I don't think this tool works correctly for the OGP (e980).
Can anyone tell me if I can get back to the AT&T stock ROM using TWRP ? If so, how?
Sent from my LG-E980 using xda app-developers app

stuck on fastbook 4.4.2

guys i installed this http://forum.xda-developers.com/showthread.php?t=2754082 using RSD Lite but failed at system.img and stuck there, now m unable to back to 4.2.1 nor 4.4.2 but bootloader is locked, please anyone help me to get rid of this situation?
booth screenshot added below, when i tried 4.4.2 it stuck on system.img, and when i tried to revert back to 4.2.1 it even stuck on 1st step, pleaseeeeeeeee do something

l2adiant said:
guys i installed this http://forum.xda-developers.com/showthread.php?t=2754082 using RSD Lite but failed at system.img and stuck there, now m unable to back to 4.2.1 nor 4.4.2 but bootloader is locked, please anyone help me to get rid of this situation?
booth screenshot added below, when i tried 4.4.2 it stuck on system.img, and when i tried to revert back to 4.2.1 it even stuck on 1st step, pleaseeeeeeeee do something
Click to expand...
Click to collapse
you need to remove the gpt_main line from the xml file
http://forum.xda-developers.com/showpost.php?p=52701350&postcount=13

laspero said:
you need to remove the gpt_main line from the xml file
http://forum.xda-developers.com/showpost.php?p=52701350&postcount=13
Click to expand...
Click to collapse
edit: gpt_main removed from 4.1.2 and now failed failed flashing process. 5/20 flash tz "tz.mbn"
now what to do ?
edit2: i removed tz.mbn and then it stuck on boot.img, on fastboot screen it showing [partition (boot) security version downgraded preflash validate failed for boot]

Try this metode..
Coronado is dead said:
Try this:
http://forum.xda-developers.com/showpost.php?p=52607724&postcount=222
That's what worked for me. Just edit the .xml in notepad and remove the lines he says PLUS remove the line that mentions .tz. Don't forget that one as well even though he does not list it.
REMOVE LINE WITH .TZ AS WELL.
Click to expand...
Click to collapse
Sent from my XT907 using XDA Premium 4 mobile app

furkonhesti said:
Try this metode..
Sent from my XT907 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
tz.mbn, then boot.img, and then system.img all failed. after reboot just showing Moto logo for awhile, then screen goes black
edit: FYI my bootloader is locked

Your bootloader is locked, so you cannot flash system.img, just wait for an official fastboot img
Sent from my EVO using XDA Free mobile app

un1ocked said:
Your bootloader is locked, so you cannot flash system.img, just wait for an official fastboot img
Sent from my EVO using XDA Free mobile app
Click to expand...
Click to collapse
finally i solved my problem, i used 4.4.2 zipped file and flashed using stock recovery, it worked like charm!!! feeling :angel: :angel:

Official fastboot image? Where did you get from?
Sent from my EVO using XDA Free mobile app

works like charm
un1ocked said:
Official fastboot image? Where did you get from?
Sent from my EVO using XDA Free mobile app
Click to expand...
Click to collapse
i did this leak and workds like cahrm
http://forum.xda-developers.com/showpost.php?p=52744212&postcount=261

l2adiant said:
i did this leak and workds like cahrm
http://forum.xda-developers.com/showpost.php?p=52744212&postcount=261
Click to expand...
Click to collapse
Did you have to modify it in any way? my xt907 got stuck at flashing modem and now i can only get to bootloader screen and i recovery. I need help please someone. I was trying to upgrade so i could use the new cm rom bc i was having crazy issues on the last available version for old bootloader (like google.com would not connect that means no drive or sometimes even gmail).

jb14813 said:
Did you have to modify it in any way? my xt907 got stuck at flashing modem and now i can only get to bootloader screen and i recovery. I need help please someone. I was trying to upgrade so i could use the new cm rom bc i was having crazy issues on the last available version for old bootloader (like google.com would not connect that means no drive or sometimes even gmail).
Click to expand...
Click to collapse
If you're upgrading, just use RSD Lite to flash the official firmware. No modifications necessary.

I tried and it got stuck flashing modem now I can only get in to fastboot and sometimes into recovery but even flashing a backup does nothing.
Sent from my SAMSUNG-SGH-I547 using XDA Premium 4 mobile app

[Q] Please help me. stuck in twrp

im stuck in twrp and cant get out. tried everything reboot system bootloader and all. battery pulled out but goes to twrp?
even when i restore my backup on phone it get after backup to TWRP.
can someone help me PLEASE. my battery is running low

Charge phone reflash stock firmware via this guide.
http://forum.xda-developers.com/showthread.php?t=2799647

Vivasanti said:
Charge phone reflash stock firmware via this guide.
http://forum.xda-developers.com/showthread.php?t=2799647
Click to expand...
Click to collapse
by flashtool i need ID and password under where i search my country?
how copy megalock to flashtool? cant open megalock

Oh boy.
You have to copy paste megalock thingy in to flashtool folder and override when asked.
That should work
Sent from my LG-D852 using XDA Free mobile app

crzygrmn said:
Oh boy.
You have to copy paste megalock thingy in to flashtool folder and override when asked.
That should work
Sent from my LG-D852 using XDA Free mobile app
Click to expand...
Click to collapse
thanks i am now with flashtool and need dll/tot files. downloading now 1.2GB kdz for that and hope its enough to get my phone to work again

afluitsnakes said:
thanks i am now with flashtool and need dll/tot files. downloading now 1.2GB kdz for that and hope its enough to get my phone to work again
Click to expand...
Click to collapse
Good luck. I f.....d up my phone many times since bump is released. But nothing that can't be fixed with factory tot. Mostly just flash and try. Mostly just no screen on cm or no sound WiFi or Bluetooth on what ever Roms I find.
Sent from my LG-D852 using XDA Free mobile app

Help, the tool says ready but when puul out usb 5seconds and in flashtool doesnt start

afluitsnakes said:
Help, the tool says ready but when puul out usb 5seconds and in flashtool doesnt start
Click to expand...
Click to collapse
Go to device manager and check if there is a "!" Somewhere on the USB ports.
Right click and disable and enable again. Sometimes the USB driver is just stuck
Sent from my LG-D852 using XDA Free mobile app

crzygrmn said:
Go to device manager and check if there is a "!" Somewhere on the USB ports.
Right click and disable and enable again. Sometimes the USB driver is just stuck
Sent from my LG-D852 using XDA Free mobile app
Click to expand...
Click to collapse
its done and says pass.
phone is on blue screen with factory reset status 3. what must i do now?

Restart the phone and click your THANKS button.

It worked downloader older drivers. I wanna thank you al this way cause i was really f..kedupp about it. Thanks people for your great help

What drivers you downloaded, flash tool won't work for me too. And what flash tool did you use? Thanks
Sent from my LG G3 using Tapatalk

I did with drivers 2.11 and lg flash tool the one from age 1 the link they put there. But sometimes the drivers wont work and you must install again

Can you put the links here please?
Sent from my LG G3 using Tapatalk

Problem solved, I was using different PC and it worked