Develop Bugs

[Q] Acidentally Wiped System, What can I do?

I accidentally formatted the system partition so the tablet will not boot. I can't get back in to TWRP, I didn't have anything to flash in there anyway because CM would fail. What can I do?
Thank you.

You could try the LG mobile support tool

techrider6262 said:
You could try the LG mobile support tool
Click to expand...
Click to collapse
I think you have to pay to use it.

No its free just go the the website and download it.You can downloaded it from the link in this post.
http://forum.xda-developers.com/showthread.php?t=2543350

Can you write to it in ADB? How far does it come when it tries to boot? just LG bootloop? And what edition of TWRP did you use to flash?

CuraeL said:
Can you write to it in ADB? How far does it come when it tries to boot? just LG bootloop? And what edition of TWRP did you use to flash?
Click to expand...
Click to collapse
I realize why it didn't flash. Because I was using an older version of TWRP that wouldn't flash AOSP roms. Is there any way to boot to recovery from the device being off?
The method in the link doesn't seem to work anymore.

How far do you get in the boot? LG screen? When connect to PC do you get connect/disconnect sounds? Please answer the questions as I'm thinking about this. I can't find any key combos so we need to find out if we have a small window where we can talk to ADB.. Any connection sounds? How far do you get?
Are you familiar with ADB and Fastboot?

CuraeL said:
How far do you get in the boot? LG screen? When connect to PC do you get connect/disconnect sounds? Please answer the questions as I'm thinking about this. I can't find any key combos so we need to find out if we have a small window where we can talk to ADB.. Any connection sounds? How far do you get?
Are you familiar with ADB and Fastboot?
Click to expand...
Click to collapse
I don't hear any sounds. It just stays at the LG screen. I made it to the factory reset screen but it didn't do anything. I followed these steps:
Make sure your device is fully charged and turned off.
Simultaneously press and hold the power and volume down buttons.
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.
Press the power button to continue.
Press the power button again to confirm if you’re sure you wish to continue with the reset.
Click to expand...
Click to collapse
ADB doesn't work at the LG screen, I just get the error: device not found message.
I can just send it back but I'd prefer to get it working.
Thanks

skatingrocker17 said:
I don't hear any sounds. It just stays at the LG screen. I made it to the factory reset screen but it didn't do anything. I followed these steps:
ADB doesn't work at the LG screen, I just get the error: device not found message.
I can just send it back but I'd prefer to get it working.
Thanks
Click to expand...
Click to collapse
Okay, okay, I dunno what you can do maybe ADB Works in here: Turn off the device AND disconnect from PC. When shut Down, you DONT hold power, but hold Volume up + Volume Down, when you hold both, you plug in USB cable. This takes you to download mode. That is perhaps a step in the right direction if you can start ADB from download mode. Then you can boot into recovery. But I don't know. This is maybe the last option for you. No recovery key combo has been discovered yet. If you can do a fastboot boot recovery from download mode, that would be golden. Then you can use the SD Card to get back with the newest TWRP and the CM11 nightly. Please let me know if this Works man. I'm sorry for your loss, otherwise. Factory Reset, as you said, will not work, since there's nothing to "restore" from. You deleted it. :/

Unfortunately, ADB doesn't work in download mode.

skatingrocker17 said:
Unfortunately, ADB doesn't work in download mode.
Click to expand...
Click to collapse
Were you able to download the LG tool?

skatingrocker17 said:
Unfortunately, ADB doesn't work in download mode.
Click to expand...
Click to collapse
Damn that sucks. I was looking around the G2 forums to see about download mode and what LG usually did with it. Apparently they are using something called KDZ files, and they are able to flash stock roms back onto the device with something called FlashTool. Now, if it were my tablet and it was in the state yours is, I would try and read the tutorial. And then I'd follow it step by step but instead of the G2 KDZ, I'd see if I could find a KDZ with a G Pad rom instead. And just.. Yolo that ****.. From download mode.
Here's the thread, if you wanna read it.. http://forum.xda-developers.com/showthread.php?t=2432476. I dunno man. The LG Tool thing, maybe you should try and see what techrider6262 is saying, he might have an idea as well, otherwise, just go all out crazy and see if you can magically use the FlashTool on your G Pad instead of the G2, since they are from "same line up." I know that's not the same as same model and so on.. But still.. Download mode.. Is download mode. Ofc. the tool itself or the settings in the tool might not work.. But.. You know. Why not.. Can't hurt.. Download mode will prolly still be available afterwards.. "For science."

got the same problem. i couldnt i wiped all data on the tablet and couldnt select the rom from the ext.sd. now its stuck at the lg logo.

skatingrocker17 said:
Unfortunately, ADB doesn't work in download mode.
Click to expand...
Click to collapse
blazze11 said:
got the same problem. i couldnt i wiped all data on the tablet and couldnt select the rom from the ext.sd. now its stuck at the lg logo.
Click to expand...
Click to collapse
This guys.. Is for download mode fix. I am pretty sure this works. Since you have access to Dload mode. Good luck.
I use the download mode to install the original official rom.
1. Download the LG MOBILE SUPPORT TOOL by this link:http://www.lg.com/us/support-mobile/lg-V500-White
2. install the software in computer, Plug in USB cable with computer, Open the software LG MOBILE SUPPORT TOOL.
3. Turn off Pad and unplug.
4. press hold both volume up and volume down, Then plug in usb cable, And then pad is in downlaod mode
5. USB driver will be insatlled automatically
6. In LG MOBILE SUPPORT TOOL, click option---.country and language-OK, then click option--upgrade recovery
7. It will installe original official rom automatically.
8. After about 1.5 hours, The pad will be installed the last official room.
^ This is a quote and now I shut down the thread, sorry, don't know who said it, just got stoked when I saw it.

thanks, the tool is downloading the rom. hope its works.
// it worked thanks a lot, will try to flash cm 11 tomorrow again.

blazze11 said:
thanks, the tool is downloading the rom. hope its works.
// it worked thanks a lot, will try to flash cm 11 tomorrow again.
Click to expand...
Click to collapse
That is GREAT!
Now remember mate, clear DATA in TWPR, not system.. Never system. Clear only data/factory reset, then just flash CM 11. Nothing else is needed. Remember to install superSU from market after you get booted, otherwise root will not work. Update Binary in SuperSU.

Okay thanks for your help. Its so stupid that there is no key combination for recovery.
I will use your advice and try it later.

blazze11 said:
Okay thanks for your help. Its so stupid that there is no key combination for recovery.
I will use your advice and try it later.
Click to expand...
Click to collapse
Agreed.

blazze11 said:
Okay thanks for your help. Its so stupid that there is no key combination for recovery.
I will use your advice and try it later.
Click to expand...
Click to collapse
There is...
With device powered off do this...
Hold volume key down and press and hold power button.
When LG Logo appears let go of just the power key while still holding the volume key down and then press power key again and volume up while still holding down the volume key.
You get to the factory reset screen and just keep pressing power until you get into recovery.

AndroidUser00110001 said:
There is...
With device powered off do this...
Hold volume key down and press and hold power button.
When LG Logo appears let go of just the power key while still holding the volume key down and then press power key again and volume up while still holding down the volume key.
You get to the factory reset screen and just keep pressing power until you get into recovery.
Click to expand...
Click to collapse
Okay, i will try it next time. Everything is working right now.
Thanks

Delete this Thread

Deleted

yawako said:
Warning to everyone please avoid using Freegee Relock feature it can cause semi hardbrick or worst a full hardbrick.
I just had a SEMI NIGHTMARE using Freegee
I installed Freegee, then installed CWM classic installation, everything went fine also made nandroid and efs backup. So I decided to Relock and then "semi hardbrick" happen.
Why Semi Hardbrick because you think you can no longer use the usual Download Mode tricks. (Insert USB, when battery show press the combo key) but that will not happen no matter what you do.
What you see in the screen is a freeze up LG logo with error like secure boot encryption in two lines or something like that.
The hard reset command still work but you cant go any further you will see the error again.
Ok here's the trick and its very tricky its like catching a fly for a Download Mode.
Normally during boot LG logo normally flick twice, then the battery shows if your insert the cable or the animation Logo if loading the system, mine don,t during this trouble time.
What happen that it seems you cant turn off your phone it persist to turn ON with boot encrption error on the screen but to turn OFF you press and hold volume down or up or both and power (this is the key to go Download Mode)
I used the volume down + up and power button
While turning off the device and you think the logo stops showing up release the key then quickly insert usb cable when the LED light turns ON quickly press the Volume UP, DOWN, POWER congrats Download Mode ^_^
I reminder to anyone Please don't use the Freegee Relock function. But if want to witness the near death experience go ahead its safe now ^_^
Click to expand...
Click to collapse
so please confirm you were plugin in the whole time right??

Delete

yawako said:
Yeah I remember I was still plugin (charging using PC) when I use the Relock function of course I have to reboot after that.
If you mean when it gets error you cant plugin your usb because it will trigger the device to turn ON and it persist to turn ON
Click to expand...
Click to collapse
when you are plugged in either by charger or computer, you might not enter recovery or download mode.
turn off your phone by pressing power for extended time.

Delete

yawako said:
You think I dont know what I posted here why not try it for yourself if you have a unit like mine.
If only I took picture of that damned boot error.
Are you sure about download mode? Not using cable?
Click to expand...
Click to collapse
what i have seen here and done myself, sometimes no matter how smart you are or knowledge you have, one always misses the smallest of the things.
yes if you are plugged in you will have a had time to get into download mode or even recovery. sometimes it just wont enter either.
also sometimes phones seems turned off but its not that's where pressing power for extended times comes up. otherwise it will try to boot on plug.

You are far from hard bricked (that's the good news). If the device turns on at all its not hard bricked. If you are getting a security error its most likely because you uninstalled some system apps and didn't put them back before relocking. You might also have not had a backup of your boot.img. Freegee will restore your phone without a boot.img backup if it can't find it, since at least that would put you close enough to stock if you had to take it in, and you can still use download mode.
You can get to download mode because you see the lge logo, download mode is before that logo in the boot sequence.
Sent from my LG-LS970 using xda app-developers app

Shelnutt2 said:
You are far from hard bricked (that's the good news). If the device turns on at all its not hard bricked. If you are getting a security error its most likely because you uninstalled some system apps and didn't put them back before relocking. You might also have not had a backup of your boot.img. Freegee will restore your phone without a boot.img backup if it can't find it, since at least that would put you close enough to stock if you had to take it in, and you can still use download mode.
You can get to download mode because you see the lge logo, download mode is before that logo in the boot sequence.
Sent from my LG-LS970 using xda app-developers app
Click to expand...
Click to collapse
Good luck with your FreeGee

[Q] Can't boot to recovery

I have a F400K G3 (Korean Olleh). It's rooted and bumped. I flashed the bumped TWRP image via Flashify and rebooted recovery via Flashify. It works. But when I try boot to recovery from a complete shutdown. It just boots into safe mode. I did exactly what was stated in the Bump thread (Power+V. Down, when logo appears, release then press again quickly) and also tried substituting V. Down button with V. Up, but it still wont boot to recovery. It just keeps going into safe mode. The video provided in the thread was using an AT&T model so maybe it differs from every variant. I want to know if I'm doing something wrong or the instructions are wrong.
Thank you.

You tried without releasing? Just keep holding buttons
---------- Post added at 11:38 AM ---------- Previous post was at 11:37 AM ----------
Do you get to that factory reset screen?

DelBoy said:
You tried without releasing? Just keep holding buttons
---------- Post added at 11:38 AM ---------- Previous post was at 11:37 AM ----------
Do you get to that factory reset screen?
Click to expand...
Click to collapse
I have tried it as well without releasing. Does the same thing. And it never shows the reset screen. It just goes directly to the boot animation. Rebooting from Flashify also doesn't show the reset screen but it does get to TWRP. But I need to boot it from complete shutdown because I'm gonna test a Flashable zip ROM without root so rebooting using Flashify would be impossible.

Bump.
Seriously. Anyone?

I am subscribing because I have the exact same problem. I have tried every key combination I could find for the G2 and G3 but no luck...

This is exactly the kind of problems you get when using stuff like Flashify. The holding of the buttons etc you mentioned should work. Are you sure you aren't connected using a micro usb?

sprremix said:
This is exactly the kind of problems you get when using stuff like Flashify. The holding of the buttons etc you mentioned should work. Are you sure you aren't connected using a micro usb?
Click to expand...
Click to collapse
No, I am not connected to USB. If I reflash the recovery using ADB will it work? But I do have some worries because I'm using KitKat bootloader on a Lollipop Stock-based ROM (here) and I think I may get some errors.
It's not very important right now because I have root now and can reboot to recovery using Flashify.

I think all korean models cant enter recovery via hardware keys, mine is F400L and have the same problem.

Untouched LG G3
I have a completely untouched LG G3 uk version only official software no root etc and mine won't go into hard reset mode. I have tried 3 or 4 times it always goes into safe mode

same issue
f400k.
able to boot into recovery by softwares
but unable with hard keys.
last night was installing bliss pop. but stuck on boot animation. now wont go to recovery watsoever.
help.

rhtash said:
f400k.
able to boot into recovery by softwares
but unable with hard keys.
last night was installing bliss pop. but stuck on boot animation. now wont go to recovery watsoever.
help.
Click to expand...
Click to collapse
Turn off the phone completely. Press and hold Power and Volume Down. When the LG logo appears, release. After a split second, press volume down and volume up. White screen asking you to reset will appear. Press Yes two times using Volume buttons.

UP!!!
Any remedies? I justed from stock to cm12 LG g3 F400L..
Cant go to recovery mode. Cant flash anything..

Same prob,always going to safemode.f400k rooted,cloudy2.5

i've Lg g3 F4ooL and using Resrruction remic 5.5.5
I stuck in a Bootloop and my device is also not booting into Recovery or safe Mode.
Lg flash Tool is also not Connecting to my device in Downloadmode.
I think There is NO solution At ALl

Has anyone solved this issue?

to get in recovery on F460s, worked on mine, Press Vol-up + Power, as the logo appears release the keys and press Vol-up + Vol-down, you will boot into recovery.

I have the same issue, cant go into recovery using hard buttons on F400K. Any one able to succeed in this?

Same issue on LG G3 F460S, no combination of power + volume buttons + releasing them and pressing again when LG logo appears works. The device go straight into booting system and gets stuck. Is there any other method - maybe short-circuit some pins on the motherboard, to boot into recovery or do a system reset? Please...

OK, turns out that the combination is different for Korean models of G3, as misbah711 wrote, volume UP + power, when logo appears, release and press both volume UP + volume DOWN. If that does not work, try again, but release only the POWER button and press immediately volume DOWN (while volume UP was held all the time). Also, I first tried it without the back cover, as I have to remove battery to turn it off, did not work. Then with the cover it did, not sure if it's an important detail or not.
However it's not the end of the story for me. An image with Korean text appears, and nothing. No combination of power and volume buttons pressing does anything. I'm attaching the image. Also tried a web service to do Korean OCR and then used Google Translate - does not make any sense. Could anyone advise how to proceed and do a factory reset on this device? It won't boot into the system (gets stuck), no adb or any other communication with it.
Edit:
Turns out that when the Korean text appears and I connect USB cable to my PC, adb works correctly. Typed:
adb reboot recovery
The phone rebooted into recovery and now I'm doing a factory reset on it. Looks like all will be fine.

i have d851 on stock kitkat. I flashed TWRP and Philz but no way i can get into recovery mode. it always goes to fastboot mode no matter how I reboot into recovery. Now i am looking for stock recovery image. or a way to fix the twrp/philz. ROM boots just fine.

[Q] Need Help - SM T705 stuck on start up screen.

Greetings XDA Developers,
Newbie here. I own a Samsung Galaxy Tab S (SM T705). I was able to root it a few weeks ago and I decided to install a custom recovery (TWRP) using an app from the Playstore named "TWRP Manager". I didn't hesitate to do so using this method because I was able to install TWRP on my GT I9300 successfully from the past using this app. However, after being prompted by the app that the recovery was successfully installed and needs to reboot the device, my tab was stuck on start up screen ( See attached photo ). I tried long pressing the power button but nothing happened. I waited until the device ran out of battery and when it did, I plugged in the charger and I'm back at the same screen. After google-ing some possible solutions, I tried to boot it into recovery but was unsuccessful, however, I was able to boot into download mode.
I'd like to ask for the help of some "experienced" users in this forum on how to solve this problem. And if possible, I'm hoping that flashing a stock recovery using Odin wouldn't be my last resort.
Thank you in advance.

paul952102 said:
Greetings XDA Developers,
Newbie here. I own a Samsung Galaxy Tab S (SM T705). I was able to root it a few weeks ago and I decided to install a custom recovery (TWRP) using an app from the Playstore named "TWRP Manager". I didn't hesitate to do so using this method because I was able to install TWRP on my GT I9300 successfully from the past using this app. However, after being prompted by the app that the recovery was successfully installed and needs to reboot the device, my tab was stuck on start up screen ( See attached photo ). I tried long pressing the power button but nothing happened. I waited until the device ran out of battery and when it did, I plugged in the charger and I'm back at the same screen. After google-ing some possible solutions, I tried to boot it into recovery but was unsuccessful, however, I was able to boot into download mode.
I'd like to ask for the help of some "experienced" users in this forum on how to solve this problem. And if possible, I'm hoping that flashing a stock recovery using Odin wouldn't be my last resort.
Thank you in advance.
Click to expand...
Click to collapse
Your going to need some fast hands for this one! I've ran into this lots of times when testing kernels and such. Any force reboot by holding Power Button+ Home Button + BOTH Volume buttons all at the same time. Press and hold that combo until the screen goes black. Then once the screen goes black quickly press and hold Power Button+ Home Button + Volume down buttons all at the same time. You should no enter into download mode. You said that you drained the battery so I would suggest charging it in download mode for 30 minutes or so then flash TWRP with Odin.
Your going to need to flash stock recovery or TWRP with Odin to override the boot and get it working
The TWRP app doesn't always work in which is why I use Odin.
Sent from my SM-T800 using Tapatalk

As a side note for future reference, hard reset is simply hold POWER + VOL DOWN.
As said all you need do is boot to download mode and flash recovery.
If you're on lollipop you may need to immediately boot into recovery after flashing to make it stick.

ashyx said:
As a side note for future reference, hard reset is simply hold POWER + VOL DOWN.
As said all you need do is boot to download mode and flash recovery.
If you're on lollipop you may need to immediately boot into recovery after flashing to make it stick.
Click to expand...
Click to collapse
Hey, thanks for the heads up. But how exactly do I "immediately boot into recovery after flashing to make it stick." Since after I flash recovery via odin, it would obviously automatically reboot my device? sorry for the dumb question.

DUHAsianSKILLZ said:
Your going to need some fast hands for this one! I've ran into this lots of times when testing kernels and such. Any force reboot by holding Power Button+ Home Button + BOTH Volume buttons all at the same time. Press and hold that combo until the screen goes black. Then once the screen goes black quickly press and hold Power Button+ Home Button + Volume down buttons all at the same time. You should no enter into download mode. You said that you drained the battery so I would suggest charging it in download mode for 30 minutes or so then flash TWRP with Odin.
Your going to need to flash stock recovery or TWRP with Odin to override the boot and get it working
The TWRP app doesn't always work in which is why I use Odin.
Sent from my SM-T800 using Tapatalk
Click to expand...
Click to collapse
Thank you for the solution mentioned above! However, just to further clarify things, what is the difference between "klimtwifi and klimtwifixx" ?

paul952102 said:
Thank you for the solution mentioned above! However, just to further clarify things, what is the difference between "klimtwifi and klimtwifixx" ?
Click to expand...
Click to collapse
Both are the same I think. Some people name it by our product name or device name (one has xx and one doesn't. Both are the same)
Sent from my SM-T800 using Tapatalk

paul952102 said:
Hey, thanks for the heads up. But how exactly do I "immediately boot into recovery after flashing to make it stick." Since after I flash recovery via odin, it would obviously automatically reboot my device? sorry for the dumb question.
Click to expand...
Click to collapse
You either be quick and hold POWER + HOME + VOL UP as soon as it reboots or you uncheck auto reboot in Odin then restart manually.

paul952102 said:
Thank you for the solution mentioned above! However, just to further clarify things, what is the difference between "klimtwifi and klimtwifixx" ?
Click to expand...
Click to collapse
So did the solution work? I am looking at a SM-T705 on ebay being sold for parts with similar symptoms. hoping I can fix it for a great bargain.

H815 Soft bricked(?) adb shows device offline

Soo.... I messed up and edited the build.prop specificly the ro.build.type property. I tried to enable some debug options without validating if this would be a good idea (hint: it's not).
It seems that this has bricked my phone, the first LG splash screen shows up with the powered by android, and the second animation just keeps loading forever (making the phone very hot). And the LED flashes blue continously.
I did manage to get the device visible in ADB but it tells me that the device is offline so I can't do anything with it.
Tried booting in recovery mode (holding power button + volume down) but it just own't go into recovery mode.
Some extra info of what runs on my phone:
- version H815
- Android 6.0
- bootloader unlocked
- TWRP installed
- Rooted
- XPosed installed
Any idea on what I could try to fix it? (I guess stuck with a brick but oh well).
Thanks!

What do you mean, by it can't go into recovery mode?
Nothing is showing on screen?

Go to downlod mode either use lgup or lg flashtool to reflash the firmware that you are on... Do u remember which firmware you were on ?

Thanks for the replies!
Vortuks said:
What do you mean, by it can't go into recovery mode?
Nothing is showing on screen?
Click to expand...
Click to collapse
I meant that it just boots 'normally' when I press those buttons, it shows me the first LG logo and the second animation just hangs, whatever I do. I tried all sorts of combinations with the power button + volume down. (Keeping it pressed, briefly letting it go after the lg logo and repressing them).
jinderation said:
Go to downlod mode either use lgup or lg flashtool to reflash the firmware that you are on... Do u remember which firmware you were on ?
Click to expand...
Click to collapse
I don't know exactly which firmware I was on but I can't even get my phone into download mode (same as my other response, pressing volume up doesn't do anything).
The recovery and download mode used to work but I have no idea why it doesn't now...

When booting the phone, hold the power button and volume down button simultaneously, when LG logo appear, push the power button again. You should see the white screen, where you choose "YES" twice. Then the phone should kick you into TWRP or different recovery mode.

But how the hell editing build.prop can mess with recovery and download mode? Sounds incredible

Vortuks said:
But how the hell editing build.prop can mess with recovery and download mode? Sounds incredible
Click to expand...
Click to collapse
Maybe he has bootloop issue... ILAPO

Yeah I have no idea why the buttons aren't working for me. After a lot of searching I found this thread:
http://forum.xda-developers.com/g4/help/soft-bricked-device-t3248144
Which is basicly the same thing I'm experiencing, ADB comes online for just a brief second (kept spamming the reboot recovery command) and got in TWRP and I just flashed another which worked fine.
Odd thing is, even now my phone works I can't start recovery or download with the hardware buttons...... oh well, thankfully adb works as it's supposed to.
Thank you all for your help!