[Q] cannot boot into bootloader - G Pad 8.3 Q&A, Help & Troubleshooting

when i issue the command adb reboot bootloader it just reboots the tablet it does not boot into bootloader mode.

markboston said:
when i issue the command adb reboot bootloader it just reboots the tablet it does not boot into bootloader mode.
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In the v510 gpe?

sleekmason said:
In the v510 gpe?
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whats v510 gpe?

markboston said:
whats v510 gpe?
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Click to collapse
there are two different versions of the gpad tablet. If you didn't buy it through the Google Play Store it is not the GPE.
I am not aware that adb can be used with the bootloader on the regular LG g pad.
the second thread in the general section has information on rooting your lg device.
if you did buy it through the Play Store then make that the first thread.
might I ask what you're trying to do? There may be another way.

ah gpe google play edition of course! i am trying to put a custom reocvery onto it. using a script i found online and it doesn't seem to be working.
sleekmason said:
there are two different versions of the gpad tablet. If you didn't buy it through the Google Play Store it is not the GPE.
I am not aware that adb can be used with the bootloader on the regular LG g pad.
the very first thread in the general section has information on rooting your lg device.
if you did buy it through the Play Store then make that the second thread.
might I ask what you're trying to do? There may be another way.
Click to expand...
Click to collapse

markboston said:
ah gpe google play edition of course! i am trying to put a custom reocvery onto it. using a script i found online and it doesn't seem to be working.
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Click to collapse
The first thread in general will show you how to accomplish that in both windows and Linux. Where was the other script please?
---------- Post added at 05:46 PM ---------- Previous post was at 05:43 PM ----------
markboston said:
ah gpe google play edition of course! i am trying to put a custom reocvery onto it. using a script i found online and it doesn't seem to be working.
Click to expand...
Click to collapse
also, if you are using Linux you may follow the first post in my signature below for the fluxbox blog. In there is a complete guide to root your pad from start to finish using Linux as your base.

the second step is to unlock the bootloader. how do i accomplish this?

markboston said:
the second step is to unlock the bootloader. how do i accomplish this?
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are you using Windows or Linux?
you first need to download and install ADB properly on your computer. Then make sure that your device is read by your computer, and then proceed from there. Again, if you are using Linux feel free to follow my signature below if you are using Windows however you will need to definitely follow the guide in general.

right now im on windows. the guide in general is what this post was about. when i type the command adb bootloader reboot to get into the bootloader it just reboots the tablet. is there a way to manual do this?
sleekmason said:
are you using Windows or Linux?
you first need to download and install ADB properly on your computer. Then make sure that your device is read by your computer, and then proceed from there. Again, if you are using Linux feel free to follow my signature below if you are using Windows however you will need to definitely follow the guide in general.
Click to expand...
Click to collapse

markboston said:
right now im on windows. the guide in general is what this post was about. when i type the command adb bootloader reboot to get into the bootloader it just reboots the tablet. is there a way to manual do this?
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There is. From a device that is off, plug in your USB cord and then press the power button and the down volume button at the same time. The bootloader screen should come up. I don't know that this works for a locked bootloader.
When you type in "adb devices", you should receive a prompt on your tablet instructing you do accept your computer as an interface. I recommend trying this first. Without adb you stand a good chance of messing up your device.

im not getting a dialog box on the tablet but adb does see the tablet
sleekmason said:
There is. From a device that is off, plug in your USB cord and then press the power button and the down volume button at the same time. The bootloader screen should come up. I don't know that this works for a locked bootloader.
When you type in "adb devices", you should receive a prompt on your tablet instructing you do accept your computer as an interface. I recommend trying this first. Without adb you stand a good chance of messing up your device.
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markboston said:
im not getting a dialog box on the tablet but adb does see the tablet
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do you have USB debugging enabled in developer options on your tablet?

also power and vol down does nothing.
markboston said:
im not getting a dialog box on the tablet but adb does see the tablet
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Click to collapse

markboston said:
also power and vol down does nothing.
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yes

i figured out the issue you have to have it in mtp mode.

Related

Any Arc S ADB drivers?

searching for arc S drivers for rooting, thx ;D
Try the ones in the link.
lol, i dont need to unlock the bootloader, im using Doomlord method to root, all i need is to install ADB..
NoobSEowner said:
lol, i dont need to unlock the bootloader, im using Doomlord method to root, all i need is to install ADB..
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Click to collapse
I know and in the thread are drivers.
If you don't get it - here.
maybe I'm wrong, by phone off, connect the USB while holding the back button, automatically installs the drivers, right?
johnbarleycorn said:
maybe I'm wrong, by phone off, connect the USB while holding the back button, automatically installs the drivers, right?
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Click to collapse
I don't know that, but look in the device manager if it did.
dp94 said:
I don't know that, but look in the device manager if it did.
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Click to collapse
yeah, ok, the procedure enables the search of the Internet adb drivers (Windows Vista), but these are not found in databases of Microsoft.
So the only way is to install them manually as specified above.
johnbarleycorn said:
yeah, ok, the procedure enables the search of the Internet adb drivers (Windows Vista), but these are not found in databases of Microsoft.
So the only way is to install them manually as specified above.
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Click to collapse
Do you really think Microsoft find anything?
I think so.
dp94 said:
Do you really think Microsoft find anything?
I think so.
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Hahahaha
NoobSEowner said:
searching for arc S drivers for rooting, thx ;D
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how did u install adb drives ?

Help with unlocking and rooting

I can't seem to get this to work. I'm trying to unlock my phone using the nexus toolkit but when I put my phone into fastboot mode and click the unlock option on the toolkit I just get '< waiting for device >'. Every video I watch just shows them plugging the phone in and then having the program unlock it for them. It's not doing the same for me. Any suggestions?
Stop using the toolkit. If something goes wrong you'll have no clue how to fix it. Read one of the "real" rooting guides that uses adb and fastboot and you'll save yourself a whole lot of headache down the road.
063_XOBX said:
Stop using the toolkit. If something goes wrong you'll have no clue how to fix it. Read one of the "real" rooting guides that uses adb and fastboot and you'll save yourself a whole lot of headache down the road.
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Every guide and video I find uses that method. Do you have a link to the other method?
http://forum.xda-developers.com/showthread.php?t=1529058
063_XOBX said:
http://forum.xda-developers.com/showthread.php?t=1529058
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Click to collapse
I still get the 'waiting for device' when I do it this way too. I have the most current samsung drivers. I also did everything to set up ADB.
uninstall the drivers and reinstall using the naked drivers.

[Q] Did I also brick my phone?

I tired to install twrp, but something went wrong and now my screen doesnt turn on. However when I connect it to the PC it dings and shows up as a modem. imgur..com/UuNaZV2 remove a dot and link should work, I dont have ten post so xda wont let me post outside links yet.
epicsnat said:
I tired to install twrp, but something went wrong and now my screen doesnt turn on. However when I connect it to the PC it dings and shows up as a modem. imgur..com/UuNaZV2 remove a dot and link should work, I dont have ten post so xda wont let me post outside links yet.
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Click to collapse
What did you do before this happened?
itsbighead said:
What did you do before this happened?
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I tired to install TWRP Recovery with a guild on xda, http://forum.xda-developers.com/lg-g2/development-d802/tools-how-to-install-twrp-bump-d80230a-t3072186 I didnt notice it was for the g2 until this problem accrued. I then tired to turn it on but my computer read it as a modem.
epicsnat said:
I tired to install TWRP Recovery with a guild on xda, http://forum.xda-developers.com/lg-g2/development-d802/tools-how-to-install-twrp-bump-d80230a-t3072186 I didnt notice it was for the g2 until this problem accrued. I then tired to turn it on but my computer read it as a modem.
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I think i know how you hardbricked your G3
Its because you wrote the G2 versions of the android bootloader, kernel and download mode partition
Its because of these commands below. It would have copied these partitions to your phone and then written them to your device
adb.exe push aboot.img /data/local/tmp/aboot.img
adb.exe push laf.img /data/local/tmp/laf.img
adb.exe push boot.img /data/local/tmp/boot.img
adb.exe push recovery.img /data/local/tmp/recovery.img
You can follow this guide instead with the D855 TOT+DLL but im doubtful it will work. This methods seems to be hit and miss http://forum.xda-developers.com/showthread.php?t=2772199
If it also wrote the System Bootlooder your phone would have automatically kicked into QHUSB_DLOAD and that is alot easier to fix than this
itsbighead said:
I think i know how you hardbricked your G3
Its because you wrote the G2 versions of the android bootloader, kernel and download mode partition
Its because of these commands below. It would have copied these partitions to your phone and then written them to your device
adb.exe push aboot.img /data/local/tmp/aboot.img
adb.exe push laf.img /data/local/tmp/laf.img
adb.exe push boot.img /data/local/tmp/boot.img
adb.exe push recovery.img /data/local/tmp/recovery.img
You can follow this guide instead with the D855 TOT+DLL but im doubtful it will work. This methods seems to be hit and miss http://forum.xda-developers.com/showthread.php?t=2772199
If it also wrote the System Bootlooder your phone would have automatically kicked into QHUSB_DLOAD and that is alot easier to fix than this
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Click to collapse
I already tired to flash my device back to 4.4.4 and it didn't work, guess I have to go to store and get a replacement. Thanks for the help, but if you want to see what the flashtool gave me then here is a screenshot imgur..com/FTSv55L (just remove one dot like before)
epicsnat said:
I already tired to flash my device back to 4.4.4 and it didn't work, guess I have to go to store and get a replacement. Thanks for the help, but if you want to see what the flashtool gave me then here is a screenshot imgur..com/FTSv55L (just remove one dot like before)
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Just to be clear, what variant do you have?
itsbighead said:
Just to be clear, what variant do you have?
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Click to collapse
I have the At&t variant(D850)but I ordered my replacement already. Although if you still want to help me, and figure this out it would be a great learning experience for me.

How to root the m8?

Hi, i never rooted or did anything similar to it so im pretty afraid to screw up with the phone hehe
anyways i need to run one app which cannot work without root
so i decided to root
someone can tell me what is the best and safest way to do it?
Edit:
i foudn vid on youtube from march 2014 and it says to enable fast boot or something like that
and i dont even have this option on the 5.0.1 lolipop
someone can tell me what to do please?
Bump
please help!
Trovlet said:
Hi, i never rooted or did anything similar to it so im pretty afraid to screw up with the phone hehe
anyways i need to run one app which cannot work without root
so i decided to root
someone can tell me what is the best and safest way to do it?
Edit:
i foudn vid on youtube from march 2014 and it says to enable fast boot or something like that
and i dont even have this option on the 5.0.1 lolipop
someone can tell me what to do please?
Click to expand...
Click to collapse
Use this guide. It says for AT&T, but actually the steps here are for any M8.
xunholyx said:
Use this guide. It says for AT&T, but actually the steps here are for any M8.
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Click to collapse
04. On your HTC One (M8) go to Settings > Power, and then uncheck the "Fast Boot" option.
I dont have this option on my 5.0.1
what should i do?
also the SuperSU download link doesnt work
Trovlet said:
04. On your HTC One (M8) go to Settings > Power, and then uncheck the "Fast Boot" option.
I dont have this option on my 5.0.1
what should i do?
also the SuperSU download link doesnt work
Click to expand...
Click to collapse
The Fast Boot option has been removed by HTC since the guide was written, so don't worry about that.
You can get SuperSU from here.
xunholyx said:
The Fast Boot option has been removed by HTC since the guide was written, so don't worry about that.
You can
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Click to collapse
Ok, if i have the HTC SYNC i dont need to download any another driver's correct?
Trovlet said:
Ok, if i have the HTC SYNC i dont need to download any another driver's correct?
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Click to collapse
Correct. But I would uninstall HTC Sync. The drivers will remain.
HTC Sync doesn't play nice with ADB, and after the drivers are installed it is pretty much useless
xunholyx said:
Correct. But I would uninstall HTC Sync. The drivers will remain.
HTC Sync doesn't play nice with ADB, and after the drivers are installed it is pretty much useless
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Click to collapse
Well i dont realy need this program, i just need to root the phone hehe
edit: i did everything and it says to me this :
C:\Users\David>fastboot devices
'fastboot' is not recognized as an internal or external command,
operable program or batch file.
Trovlet said:
Well i dont realy need this program, i just need to root the phone hehe
edit: i did everything and it says to me this :
C:\Users\David>fastboot devices
'fastboot' is not recognized as an internal or external command,
operable program or batch file.
Click to expand...
Click to collapse
Open up your ADB folder. Then shift+right click and open the cmd window there.
It should look something like this: C:\Users\NAME\sdk\adb>
enter adb reboot bootloader
then fastboot devices
xunholyx said:
Open up your ADB folder. Then shift+right click and open the cmd window there.
It should look something like this: C:\Users\NAME\sdk\adb>
enter adb reboot bootloader
then fastboot devices
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Ok thank you very much that i unlocked it successfuly
now ill try to root the phone, ill bumb this if something will go wrong!
the TWRP Recovery is not working as well ( the download )
Trovlet said:
the TWRP Recovery is not working as well ( the download )
Click to expand...
Click to collapse
https://dl.twrp.me/m8/
Ok i couldnt believe it but i did root the phone
all thanks to you mate, if not you i would never make it
thank you very much good man!
Trovlet said:
step 7 of the root
when i type the name of the .img :
'
C:\Users\David\Desktop\Android\adb-windows>fastboot flash recovery htcm8.img
error: cannot load 'htcm8.img'
edit: for some reason i entred 'TAB' and it worked
can you tell me how to do the number 9 ?
how i transfer this zip to the root? what/
Click to expand...
Click to collapse
Transfer it to your internal storage. By root directory, it means just to the storage and not in a folder. Just drag and drop it to your phone's storage with the Windows file explorer
---------- Post added at 03:18 PM ---------- Previous post was at 03:17 PM ----------
Trovlet said:
Ok i couldnt believe it but i did root the phone
all thanks to you mate, if not you i would never make it
thank you very much good man!
Click to expand...
Click to collapse
Nice! Glad to be of assistance.

[REQUEST] AT&T LG K20 (LG-M255) root method

This is my 4th LG phone but this is giving me problems even unlocking the bootloader. Any help would be appreciated.
Is this of any help?
https://forum.xda-developers.com/android/development/recovery-twrp-v3-lg-k20-plus-t3616248
Professor Woland said:
Is this of any help?
https://forum.xda-developers.com/android/development/recovery-twrp-v3-lg-k20-plus-t3616248
Click to expand...
Click to collapse
I wish. At&t has the bootloader locked down. All the other steps will probably work. Twrp would have to be built for M255. Thanks for the response.
So, you don't have "allow device to be OEM unlocked" option in developer options?
Professor Woland said:
So, you don't have "allow device to be OEM unlocked" option in developer options?
Click to expand...
Click to collapse
I do. Tried enabling, but still trying to get a grip on it.
Update: still can't enter fastboot mode. It just reboots like normal.
Can't I run the oem unlock command while in download mode?
mikefeFe said:
Can't I run the oem unlock command while in download mode?
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Click to collapse
No.
pvineeth97 said:
No.
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Click to collapse
Any way you know to unlock bootloader?
mikefeFe said:
Any way you know to unlock bootloader?
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Click to collapse
Maybe bootloader patching might work. Will look into it later.
pvineeth97 said:
Maybe bootloader patching might work. Will look into it later.
Click to expand...
Click to collapse
I appreciate your help. If you need anything from my phone, just let me know.
Did you ever have any success unlocking the phone?
I am trying to do the same thing and running into the same problems.
please help us!
---------- Post added at 01:55 PM ---------- Previous post was at 01:51 PM ----------
hope someone with a kind hearted intellectual brain will make this happen ? please help us damn it
jamers14 said:
Did you ever have any success unlocking the phone?
I am trying to do the same thing and running into the same problems.
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Click to collapse
Nothing yet. I am waiting to hear something from @pvineeth97 on the issue. I'll contact him and see where we stand. ?
mikefeFe said:
Nothing yet. I am waiting to hear something from @pvineeth97 on the issue. I'll contact him and see where we stand.
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Click to collapse
You guys have Android 7.0?
pvineeth97 said:
You guys have Android 7.0?
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Click to collapse
Yep & thank you MikeFefe!
Did anyone ever find a solution to this?
diazi said:
Did anyone ever find a solution to this?
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Click to collapse
Not as of yet. Sorry.
Hey all, just got this phone, I had originally "done some research" when I was at the att store, and found root instructions for the lg k20 PLUS (missed that plus part). So I bought the phone and now im finding out there's currently no root method, which means, as usual, I have to at least try. I warn you, I'm no fulltime dev, so don't get too excited, im the kind of guy that still needs plenty of help with this stuff, but I'm setting up a dev environment and digging in.
My question right now is, has anyone been able to access the bootloader? I read thru the k20plus root topic a bit and they say to use
#adb reboot bootloader#
or hold VOLDOWN and plug usb while powered off.
Nothing seems to bring me to a bootloader.
#adb reboot bootloader#
reboots the device and I assume it tries to boot the bootloader and fails, because windows chirps as if it's been disconnected, then my device proceeds to boot up normally.
Holding VOLDOWN and plugging the usb makes the phone show a splash screen momentarily and then switch to the powered off charging screen.
Has anybody been able to access the bootloader?
-BMFC
Still waiting here too. ??
What u mean with "bootloader" are fastboot.
To get into download-mode hold Vol+ & plug-in usb
Fastboot may for u arivable but u have to wipe ur recovery partition first.
Then reboot into recovery...but wait !
It's look like freeze..plug-in usb and hit on ur PC "fastboot device"
Welcome !

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