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.
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Click to collapse
Were you able to download the LG tool?

skatingrocker17 said:
Unfortunately, ADB doesn't work in download mode.
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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.
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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.
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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.
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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

Hardware Key Control Mode

D'u know this ? It's a particular way to boot the device pressing power volup and voldown. Someone know how it is booted up?
I was looking for find the related partition but i was not able to do it. Someone know more about it?
Maybe another way to try to bypass the bootloader check.

Hardware key control
Skin1980 said:
D'u know this ? It's a particular way to boot the device pressing power volup and voldown. Someone know how it is booted up?
I was looking for find the related partition but i was not able to do it. Someone know more about it?
Maybe another way to try to bypass the bootloader check.
Click to expand...
Click to collapse
Are you looking for this mode to bootup ? This mode allows to enable answering calls etc using hardawre keys. This page is for sprint
http://www.manualslib.com/manual/608442/Lg-Sprint.html?page=26
http://eguides.sprint.com/support/eguides/lgg2/index.html#lg_g2_ug/hardware_key_control_mode.html#_Toc383067064%3FTocPath%3DPhone%20Basics%7C_____7

krezee said:
Are you looking for this mode to bootup ? This mode allows to enable answering calls etc using hardawre keys. This page is for sprint
http://www.manualslib.com/manual/608442/Lg-Sprint.html?page=26
Click to expand...
Click to collapse
I've seen it and i supposed that it boot a different partition but i cannot find it... :crying:

Skin1980 said:
I've seen it and i supposed that it boot a different partition but i cannot find it... :crying:
Click to expand...
Click to collapse
The booting using hardware keys method seems to be magic/voodoo art.
Ive struggled yesterday for hours to get into recovery and accidentally found this key combo.
The method specified in different threads didn't seem to work. I think the problem is that "the phone should be off" part. If phone is just rebooting they the keys do not work maybe.
Pressing all 3 keys switches off the phone for me. I mean it does not automatically start to LG logo. perhaps thats the trick.
I was worried I will break the screen or digitizer with all this key presses session The best and reliable way to to do "adb reboot recovery" but phone has to connect to adb and it does not if its screwed and stuck in boot loader, so we're stuck there.
Best of luck.

[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.

Stuck on "Entering Recovery..." after trying to update TWRP version

I tried to update the version of TWRP I was using(v2.7.0.2) on my HTC One M8 (rooted) to v2.8.7.0 using the TWRP Manager App that I downloaded from the play store. The screen is stuck on "Entering Recovery...". I would appreciate any advice anyone can give me about how to get out of it. I tried holding down the power button it does nothing. The screen is frozen. How do I turn it off / get it to boot properly? Please help.. :crying:

shamajay said:
I tried to update the version of TWRP I was using(v2.7.0.2) on my HTC One M8 (rooted) to v2.8.7.0 using the TWRP Manager App that I downloaded from the play store. The screen is stuck on "Entering Recovery...". I would appreciate any advice anyone can give me about how to get out of it. I tried holding down the power button it does nothing. The screen is frozen. How do I turn it off / get it to boot properly? Please help.. :crying:
Click to expand...
Click to collapse
Holding down the power button for what feels like an eternity got me through this when it happened last. I also had to flash TWRP again.
Alternatively, I believe holding both the power button and volume down during this stage is supposed to work. The only other way would be to either grin and bear a battery drain shut down (Not good if the device won't take a charge afterwards), or pop open the phone / remove battery.. Which I'm sure you can find a guide for both here and online. Hopefully it won't come to that, though!

Anonaru said:
Holding down the power button for what feels like an eternity got me through this when it happened last. I also had to flash TWRP again.
Alternatively, I believe holding both the power button and volume down during this stage is supposed to work. The only other way would be to either grin and bear a battery drain shut down (Not good if the device won't take a charge afterwards), or pop open the phone / remove battery.. Which I'm sure you can find a guide for both here and online. Hopefully it won't come to that, though!
Click to expand...
Click to collapse
Thanks a lot! Holding down both the volume buttons and the power button at the same time worked for me.

shamajay said:
Thanks a lot! Holding down both the volume buttons and the power button at the same time worked for me.
Click to expand...
Click to collapse
Fantastic! Glad that worked, good luck!

Upgrading LOS from 18.1 to 19

Step 5 of the upgrade instuctions say that if you want install add-ons, you need to click Advanced then Reboot to Recovery. However, my phone, as mentioned in the instructions can happen, goes to a black screen. So how can I install Gapps after side-loading LOS?
Has anyone successfully carried out the upgrade?

Try this:
Connect your phone to a charger or pc....(make sure its charging)....then press and hold (vol up + power button)...until android one logo shows up, as soon as the logo shows up just leave the power button but still holding the volume up button until it enters lineage os recovery menu. Then flash your gapps...and then factory reset,....then reboot system. It works.....good luck

_._vance_._ said:
Try this:
Connect your phone to a charger or pc....(make sure its charging)....then press and hold (vol up + power button)...until android one logo shows up, as soon as the logo shows up just leave the power button but still holding the volume up button until it enters lineage os recovery menu. Then flash your gapps...and then factory reset,....then reboot system. It works.....good luck
Click to expand...
Click to collapse
My problem was not that I didn't know what to do. The problem is that on my phone, I just get a blank screen when I boot to recovery. The recovery still works, but it is hard to use if you can't see what you are doing. However, as I have another phone where I can see the recovery, I was able to use that as a guide.

Ok
oldfone said:
My problem was not that I didn't know what to do. The problem is that on my phone, I just get a blank screen when I boot to recovery. The recovery still works, but it is hard to use if you can't see what you are doing. However, as I have another phone where I can see the recovery, I was able to use that as a guide.
Click to expand...
Click to collapse

oldfone said:
My problem was not that I didn't know what to do. The problem is that on my phone, I just get a blank screen when I boot to recovery. The recovery still works, but it is hard to use if you can't see what you are doing. However, as I have another phone where I can see the recovery, I was able to use that as a guide.
Click to expand...
Click to collapse
Hello! I have the exact same issue! Is there any known fix yet and can I contribute somehow?

I haven't found a solution, but some workarounds are given here: https://gitlab.com/LineageOS/issues/android/-/issues/4170

oldfone said:
I haven't found a solution, but some workarounds are given here: https://gitlab.com/LineageOS/issues/android/-/issues/4170
Click to expand...
Click to collapse
The TWRP workaround did not work for me, but I awas able to install it blindly.
Is there any way to run the LOS Recovery on a windows PC in VirtualBox or something? Then I could make some screenshots of the Recovery Menu so everyone with the same issue can at least do it blindly in theory...