Database Users

[Q] Stuck in endless bootup logo - unable to stock flash

Hi Guys,
I'm stuck in the endless boot logo problem, I installed google drivers, I'm able to get into recovery mode.
the device manager in win7 reports a "android ADB Device" connected.
but when I issues some of the commands in this guide http://forum.xda-developers.com/showthread.php?t=1907796 (like adb devices) it doesn't show anything...
What I've to do?? Am I doing something wrong?
thanks

Can you restore your nandroid/twrp backup? If not, fastboot back to stock and start over.
Sent from my Nexus 7 using XDA Premium HD app

peneoark said:
Can you restore your nandroid/twrp backup? If not, fastboot back to stock and start over.
Sent from my Nexus 7 using XDA Premium HD app
Click to expand...
Click to collapse
Already did that with no success... .

If your device is rooted, installed a custom recovery and you're able to get into recovery mode Windows should be able identify your device without asking for RSA fingerprint or something.
Get into recovery mode and try "adb devices" from cmd after connecting your device to pc. What do you see?

Djabolic said:
If are rooted, installed a custom recovery and you're able to get into recovery mode Windows should be able identify your device without asking for RSA fingerprint or something.
Get into recovery mode and try "adb devices" from cmd after connecting your device to pc. What do you see?
Click to expand...
Click to collapse
I'm not rooted,
when rebooting with power and vol- windows recognize the device but "adb devices" gives nothing"
If I select recovery mode the nexus disappears from windows device manager

Check windows device manager to see if you can find any devices without drivers especially something about ADB or Android.

Djabolic said:
Check windows device manager to see if you can find any devices without drivers especially something about ADB or Android.
Click to expand...
Click to collapse
Nothing, when in bootloader (the one with the green robot win belly open) it gets recognized as "bootloader adb interface"; when in recovery (green robot with red exclamation mark) there is nothing in device manager

lmalossi said:
Nothing, when in bootloader (the one with the green robot win belly open) it gets recognized as "bootloader adb interface"; when in recovery (green robot with red exclamation mark) there is nothing in device manager
Click to expand...
Click to collapse
So you can issue commands over fastboot then? You can flash stock firmware images over fastboot to get everything working again.

Djabolic said:
So you can issue commands over fastboot then? You can flash stock firmware images over fastboot to get everything working again.
Click to expand...
Click to collapse
but when if fastboot the command "adb devices" return nothing...

When you're in fastboot mode you don't see your device online over adb, you can freely issue any commands from fastboot if your computer recognizes the bootloader interface.
Follow this guide to flash nexus 7 stock firmware;
http://forum.xda-developers.com/showthread.php?t=1907796

Djabolic said:
When you're in fastboot mode you don't see your device online over adb, you can freely issue any commands from fastboot if your computer recognizes the bootloader interface.
Follow this guide to flash nexus 7 stock firmware;
http://forum.xda-developers.com/showthread.php?t=1907796
Click to expand...
Click to collapse
I was already following your guide....
Didn't know that if I was already in fastboot mode I could issue fastboot commands even if adb devices didn't show anything...
N00b Error!! Now the thing is clearer to me
Flashed image, and the tablet appears to be working :fingers-crossed:
Thank you very much!!
Luca

Unrooted, disabled usb debugging, stuck on fastboot mode, not recognized in download

Hi guys, im already hopeless but i'm here to beg for your experience.
I got a G2 D805, the screen broke, then i replaced with a new one. But, when it powered on gave the message that it was going to turn off. The battery icon was with an X.
Soooo... i thought, ok the battery is gone. Bought another one. Nope, it wasnt the battery.
Then I tried the "factory reset". As soon as it starts, it restarts, loads the welcome screen(where you first customize the phone), 1 second and it gives the power off message.
Tried the recovery mode. Same.
Download mode? Ok, i read something about the kdz recovery. The LG Flash Tool cant see the phone. Neither the pc. Doesnt make a sound when i connect it on download mode.
Then tried the "fastboot mode" thingy where you press something against a single chip part inside the phone until it makes fastboot avaiable. On fastboot, thought it was finally going to work. The device even appeared on the pc. Tried those below with drivers from: "universal adb drivers", "pdanet", "android sdk", even some "15 adb install" drivers. No results.
I typed "fastboot devices" = ? fastboot
I typed "fastboot erase recovery" = failure sending erase group start command to the card (on pc remote: failed to erase partition)
I typed "fastboot continue" = failure sending read command to the card AND failure setting read block count for card AND cannot read boot image header
"adb devices" = list of devices attached (nothing, just that)
Im close to losing my mind here. Any help is appreciated.
Thanks for your time.

Stuck in Bootloop

US996 Unlocked, stock rom. I was in XDA Forums and saw there were app updates, one being Play Store. I updated. When I tried to get into Play Store, the message "this version of play store is incompatible with your device, go to settings and disable app update (or something like that). I tried but the app was not listed in settings. I tried to reboot and now the phone bootloops. All I can get is the warning that the software cannot be checked for corruption and then a quick display of the LG logo, then screen off, and then LG logo again and then warning screen, etc. If I try to reboot into recovery I get the Factory data reset screens and I answer both "yes" and the phone goes into adb mode.. From adb mode I can fastboot reboot, which puts me back into the above loop, or fastboot bootloader, which merely returns me to the adb screen. What can I do now?

Maybe try relocking the bootloader. I am pretty sure (someone correct me if I am wrong) that that pop-up of the "cannot check for corruption" usually only shows when the bootloader is unlocked.

XP_1 said:
Maybe try relocking the bootloader. I am pretty sure (someone correct me if I am wrong) that that pop-up of the "cannot check for corruption" usually only shows when the bootloader is unlocked.
Click to expand...
Click to collapse
Is that even possible? Don't know how to do it.

PhoneBull said:
Is that even possible? Don't know how to do it.
Click to expand...
Click to collapse
Try entering
Code:
fastboot oem device-info
into Fastboot on your computer to see if it says it is unlocked when in fastboot mode.

XP_1 said:
Try entering
Code:
fastboot oem device-info
into Fastboot on your computer to see if it says it is unlocked when in fastboot mode.
Click to expand...
Click to collapse
I get "FAILED (remote: unknown command)"

Do you have fastboot installed on your computer? (Something you would have had to have intentionally installed) If not google Minimal Fastboot /ADB and install it, enter the supposed ADB screen you are talking about and see if it makes contact with your phone.

XP_1 said:
Do you have fastboot installed on your computer? (Something you would have had to have intentionally installed) If not google Minimal Fastboot /ADB and install it, enter the supposed ADB screen you are talking about and see if it makes contact with your phone.
Click to expand...
Click to collapse
I have the fastboot on the PC that I used to unlock the bootloader.. I enter fastboot on the PC via the administrative command prompt. With the phone in the fastboot mode, I type "fastboot devices" on the PC and get a proper response (LGUS996ab**** fastboot). If I enter ""fastboot reboot" I get the bootloop. If I enter "fastboot bootloader" I wind up in Fastboot Mode on the phone again. I was hoping there was a "fastboot recovery" command but there doesn't seem to be. I don't know what to do next. I am not all that familiar with what can be done from fastboot. My only experience with it was when I unlocked the phone. I am desperate!

Okay, so if you do not have TWRP installed on your phone, then I don't know if you can save your data. You can try to
Code:
fastboot erase cache
and see if it helps, or if not and just reset the device fastboot oem lock I think. Maybe ask around in the unlocking help threads or perhaps someone with more knowledge will chime in. If none of this works, then there are some instructions on how to get your phone back to stock in the News and Guides section.
EDIT: Maybe try the power+volume down. It may work? I have tried it and never got it to successfully work. But you can try it.

XP_1 said:
Okay, so if you do not have TWRP installed on your phone, then I don't know if you can save your data. You can try to
Code:
fastboot erase cache
and see if it helps, or if not and just reset the device fastboot oem lock I think. Maybe ask around in the unlocking help threads or perhaps someone with more knowledge will chime in. If none of this works, then there are some instructions on how to get your phone back to stock in the News and Guides section.
Click to expand...
Click to collapse
Thanks for your help. I DO have TWRP installed and have used it often for backups. But now the only way I know to TRY to get to it is by the power/vol down until LG logo, then release/repress power button sequence but this just gets me into fastboot mode. II have some recent backups saved on my micro SD card - is there any way to flash one of them through fastboot if I load one onto the PC?

Yeah. My bad. Okay, so how I get into TWRP is through the EasyRecowvery.
Go ahead and download it from Git-Hub (1.3b3).
Now extract it and run the cmd program. Enter 5. which is extras and stuff and then enter 5 again in the sub menu which will let you boot into recovery. When you are in recovery, and plugged into your computer, you should be able to either flash or drag and drop like a flash drive on the the phone. Hope that helps a little bit.

XP_1 said:
Yeah. My bad. Okay, so how I get into TWRP is through the EasyRecowvery.
Go ahead and download it from Git-Hub (1.3b3).
Now extract it and run the cmd program. Enter 5. which is extras and stuff and then enter 5 again in the sub menu which will let you boot into recovery. When you are in recovery, and plugged into your computer, you should be able to either flash or drag and drop like a flash drive on the the phone. Hope that helps a little bit.
Click to expand...
Click to collapse
I don't have T-Mobile. I have Verizon Wireless on the US996. Will that work?

PhoneBull said:
I don't have T-Mobile. I have Verizon Wireless on the US996. Will that work?
Click to expand...
Click to collapse
Since you are only rebooting into recovery and not flashing anything it might. If not, it will just fail and not harm anything. Last thing to try is the
Code:
adb reboot recovery
which is the only thing I can think of and I think you already tried it. Otherwise you will need to just go stock.

[help] [h910] "adb devices" works, "fastboot devices" does not, cant use boot hotkeys

[help] [h910] "adb devices" works, "fastboot devices" does not, cant use boot hotkeys
What am I missing here? Windows 7. All drivers installed correctly. I can run "adb reboot bootloader" but it just reboots the phone. The fastboot command does not work at all. Tried every button combination while the phone is off to boot it into recovery mode / bootloader but nothing is working. Help?
Software version H91010m
edit: found a few people saying the phone had an update that broke the ability to root it a few months ago? I'm hoping this isn't true can anyone confirm

You can still get to fastboot with the latest 10p, make sure you have the right drivers installed. Try switching from media usb mode to ptp usb mode or vice versa . nothing is detected when you typr Fastboot devices?

@deadguyperez The H910 has never had fastboot. AT&T pulls fastboot from their firmware. However, you can root v10m. See thread here.
-- Brian

runningnak3d said:
@deadguyperez The H910 has never had fastboot. AT&T pulls fastboot from their firmware. However, you can root v10m. See thread here.
-- Brian
Click to expand...
Click to collapse
Thank you for this! Somehow did not come up in my searches Sorry for the trouble here goes nothing!

Stuck in Fastboot Reboot Loop. Fastboot Reason: reboot mode set to fastboot

Last week i received a notification the 8.1 Oreo update was available for my Moto g4 Plus.
Downloaded the package and hit the install button. My moto restarted in order to perform the installation.
However, since i had TWRP installed and thus bootloader unlocked, the phone restarted in recovery mode.
Downloaded a TWRP 8.1 rom and installed it without a problem.
Unfotunately everytime I restart my Moto it starts up in fastboot mode.
Bootloader log shows: Fastboot Reason: reboot mode set to fastboot
From bootloader I can start the Android OS, but i wan't to get rid of this reboot mode
I tried tools like "Android Multi Tool" and "Free ReiBoot for Android" but this reboot mode can not be cleared.
Anyone encountered this problem and how did you fix it.
Thanks in advance

Try this:
Reboot your device to the bootloader.
Connect your device to your computer and open an ADB terminal on your computer.
In the ADB terminal, type 'fastboot devices' without quotes. Press Enter - your device should respond with its serial number.
If so, then type 'fastboot oem fb_mode_clear' without quotes. Press Enter, then reboot your device.
That fb_mode_clear command seems to clear a flag that keeps your device booting into fastboot (usually for OTA updates).

I have Tried that option as i found it as one of the possible solutions for this issue.
the clear_fb unfortunately does not remove the fastboot mode on my moto.

mbodewes said:
I have Tried that option as i found it as one of the possible solutions for this issue.
the clear_fb unfortunately does not remove the fastboot mode on my moto.
Click to expand...
Click to collapse
Alright, though this is for solving TWRP bootloops, might be useful for you https://forum.xda-developers.com/moto-g4/help/troubleshooting-twrp-boot-loop-ota-t3714325

echo92 said:
Alright, though this is for solving TWRP bootloops, might be useful for you https://forum.xda-developers.com/moto-g4/help/troubleshooting-twrp-boot-loop-ota-t3714325
Click to expand...
Click to collapse
echo92. Thanks. Works like a charm. Issue fixed.