Database Info

constant reboot

my galaxy just wont boot anymore i can only see the boot logo and then restart again try to put it into download mode it boots into download mode but after a few seconds it reboot again into a boot loop.i tried to pull out the battery but once i put it back again it opens up and boot even if i didnt press the power button.Anyone encounter this same problem?any help is appreciated

Since the phone boots without pressing the power button it must be a hardware problem but you could try putting it into forced upload mode by pressing the volume up, home button, and power button. Then try flashing a ROM.
Click thanks if I helped.

Try to enter recovery mode ( volume up + volume down + home button + power) and wipe data
Sent from my GT-I5800 using xda app-developers app

gjhita1996 said:
Try to enter recovery mode ( volume up + volume down + home button + power) and wipe data
Sent from my GT-I5800 using xda app-developers app
Click to expand...
Click to collapse
remove the batt and leave your phone for 1-2 hours and then put it back again n see what happened..
try to get into recovery and wipe data/ cache / delvic-cache .. if its not worked then got to download mode and flash new rom...

It starts if you put the battery in? And won't stay in download mode? Maybe a faulty power button, constantly pressed? Maybe worth checking, opening up our G3 is really easy.

If none of these options work, take it in for repair
Sent from my GT-I5800 using xda app-developers app

Force upload to flash
(Vol^ + home + power button)
(If it works then you are on the easier side)
Start the phone in force upload and then connect the usb through odin
Flash zero fill.tar
Wipe data, cache and dalvik
Reboot in download
Flash another rom.
Sent from my GT-I5800 using xda premium

Abhijeetsinghvsf said:
Force upload to flash
(Vol^ + home + power button)
(If it works then you are on the easier side)
Start the phone in force upload and then connect the usb through odin
Flash zero fill.tar
Wipe data, cache and dalvik
Reboot in download
Flash another rom.
Click to expand...
Click to collapse
It reboots after a few seconds in download mode. Would you try flashing in that situation? Serious hardbrick risk that.

martialaw said:
It reboots after a few seconds in download mode. Would you try flashing in that situation? Serious hardbrick risk that.
Click to expand...
Click to collapse
You cant flash a rom if the phone isnt in download mode. Odin wont recognise it.
Press thanks if I helped.

'Download mode' (vol DOWN + home + power ) and 'Force Upload mode' (vol UP + home + power ) being two different modes have slightly different capacities.
Mostly when download mode doesn't work, the force upload does work in case of flashing ROM.
Sent from my GT-I5800 using xda premium

But it looks like a hardware problem so all he can do.is replace the power button
Press thanks if I helped.

Abhijeetsinghvsf said:
'Download mode' (vol DOWN + home + power ) and 'Force Upload mode' (vol UP + home + power ) being two different modes have slightly different capacities.
Mostly when download mode doesn't work, the force upload does work in case of flashing ROM.
Click to expand...
Click to collapse
Apologies, I did not know that force upload mode even exists! You really got me there... what purpose has this mode?
I know it's OT, short comment or link will satisfy me^^

Nexus 5 stuck in boot loop and cant access boot loader

i flashed the latest nightly of AOKP today and then restored all my apps and data with titanium backup. When the restore was complete it prompted me to reboot my device so i did. ever since then i have been unable to reboot my phone as it is stuck on the start up screen. i then tried to restore from a backup of my other rom and then found out that i couldn't boot into the boot loader as when i held down the power and + volume button the startup would begin and then the phone would turn off. any ideas on how to fix this.

What it's happening is your stuck in a boot loop.
When you are holding power and volume down the phone is only interested in the power button part. Which is why it's powering off.
Just keep the buttons held both power and volume down. When it powers off keep them held and you should come into the bootloader
Sent from my Nexus 4 using xda app-developers app

I have tried that but it just goes tocthe Google screen then turns off again

rdodds97 said:
when i held down the power and + volume button the startup would begin and then the phone would turn off. any ideas on how to fix this.
Click to expand...
Click to collapse
Not sure if the quote is a typo or not, but it should be power and - volume. You can also try power and both volume buttons, which will take you to the secondary boot loader.

adrman said:
Not sure if the quote is a typo or not, but it should be power and - volume. You can also try power and both volume buttons, which will take you to the secondary boot loader.
Click to expand...
Click to collapse
If the phone is turned on and you press both volumes and power keys then you get qhusb mode
Sent from my Nexus 5 using xda app-developers app

bitdomo said:
If the phone is turned on and you press both volumes and power keys then you get qhusb mode
Sent from my Nexus 5 using xda app-developers app
Click to expand...
Click to collapse
I assumed the op was able to completely power down by just continuing to hold the power button and possibly had the wrong button combo.

What do you mean by start up screen?
You see the screen tells you "Google" and it stays there?
Sent from my Nexus 5 using xda app-developers app

bitdomo said:
What do you mean by start up screen?
You see the screen tells you "Google" and it stays there?
Sent from my Nexus 5 using xda app-developers app
Click to expand...
Click to collapse
Yes but then it goes to the 4 coloured circles which move around and it stays there

rdodds97 said:
Yes but then it goes to the 4 coloured circles which move around and it stays there
Click to expand...
Click to collapse
Hold your power button down for 30 to 60 seconds. You should be powered down. Then try to get into the boot loader. Vol down + power. Dues it get into bootloader?

adrman said:
Not sure if the quote is a typo or not, but it should be power and - volume. You can also try power and both volume buttons, which will take you to the secondary boot loader.
Click to expand...
Click to collapse
I can now access recovery mode which is all I need. I have always thoight it was power and volume + but I must have been confused with my tablet z. Thank you all anyway for helping me

rdodds97 said:
I can now access recovery mode which is all I need. I have always thoight it was power and volume + but I must have been confused with my tablet z. Thank you all anyway for helping me
Click to expand...
Click to collapse
Great news!
Sent from my Nexus 5 using Tapatalk

Hi guys.
Sorry for bumping but I have the same issue and for me it wasn't fixed by going in recovery mode. I already tried deleting cash, and even tried getting back to factory settings. But still, when i restart the phone, the same loop keeps occuring.
At first it always just went to 'google' and then rebooted and rebooted. Now it just keeps stuck with the google logo (the 4 colour image).
Could someone help me possibly?
Thanks in advance
Kevin

cryptail said:
Hi guys.
Sorry for bumping but I have the same issue and for me it wasn't fixed by going in recovery mode. I already tried deleting cash, and even tried getting back to factory settings. But still, when i restart the phone, the same loop keeps occuring.
At first it always just went to 'google' and then rebooted and rebooted. Now it just keeps stuck with the google logo (the 4 colour image).
Could someone help me possibly?
Thanks in advance
Kevin
Click to expand...
Click to collapse
Hi Kevin,
Try LG flashtool. Link in my signature. If you have the 32GB version of the american nexus 5 (D820) you can use the converted firmware without any problem. It was tested numerous time.
You can also try to reflash stock google rom in fastboot mode http://forum.xda-developers.com/google-nexus-5/general/tutorial-how-to-flash-factory-image-t2513701
If you are using LG flashtool and you get error about cant format userdata and/or cache or by checking the flashing log you see timeout errors then your phone have a fauilty emmc. If you are using the fastboot method and you see "remote: flash write failure" text in the CMD window then you have fauilty emmc. Your only option is to rma your phone if bought from google or claim your warranty from LG if your phone is not from Google and you have the receipt of your phone.

Loop boot without a root. Help needed.

Suddenly my phone (z710e) jumped into a loop boot.
It's not rooted, no custom stuff, no custom bootloader.
It loads fine, but after 1-2 seconds reboots.
I've already tried to unbrick it with no result, computer can't see my phone.
Help with an advice or a link or anything useful will be great!
Thanks!

S1R1N said:
Suddenly my phone (z710e) jumped into a loop boot.
It's not rooted, no custom stuff, no custom bootloader.
It loads fine, but after 1-2 seconds reboots.
I've already tried to unbrick it with no result, computer can't see my phone.
Help with an advice or a link or anything useful will be great!
Thanks!
Click to expand...
Click to collapse
If i remember correctly you can wipe cache from the stock recovery. Boot into hboot by holding down volume down and power. Use the volume buttons to highlight recovery and press power. Then you will see a little android or a red exclamation in a triangle. Press the volume buttons and power until options appear on the screen. If it gives you wipe cache, them wipe it. Other wipe options may/will remove your personal data so use caution and know the risks
Sent from my nexus 7 using Tapatalk

heavy_metal_man said:
If i remember correctly you can wipe cache from the stock recovery. Boot into hboot by holding down volume down and power. Use the volume buttons to highlight recovery and press power. Then you will see a little android or a red exclamation in a triangle. Press the volume buttons and power until options appear on the screen. If it gives you wipe cache, them wipe it. Other wipe options may/will remove your personal data so use caution and know the risks
Sent from my nexus 7 using Tapatalk
Click to expand...
Click to collapse
unfortunately power+volume doesn't work.. it just boots as usual (

S1R1N said:
unfortunately power+volume doesn't work.. it just boots as usual (
Click to expand...
Click to collapse
did you remove first the battery and then put it back?

S1R1N said:
unfortunately power+volume doesn't work.. it just boots as usual (
Click to expand...
Click to collapse
Okay, remove your battery then replace after 10 seconds. Then hold volume down first, then while volume down is still depressed begin holding power as well. If you see the htc splash screen then it has failed. Battery pull and try again. Have you ever used adb on this device?
Sent from my Desire S using Tapatalk
Edit: removed incorrect data.

heavy_metal_man said:
Okay, remove your battery then replace after 10 seconds. Then hold volume down first, then while volume down is still depressed begin holding power as well. If you see the htc splash screen then it has failed. Battery pull and try again. If it fails after 3 battery pulls then your device has fast boot enabled in its settings. Have you ever used adb on this device?
Sent from my Desire S using Tapatalk
Click to expand...
Click to collapse
it doesn't matter if you have fastboot enabled
you can still have access to the bootloader when removing battery and putting it back

heavy_metal_man said:
Okay, remove your battery then replace after 10 seconds. Then hold volume down first, then while volume down is still depressed begin holding power as well. If you see the htc splash screen then it has failed. Battery pull and try again. Have you ever used adb on this device?
Sent from my Desire S using Tapatalk
Edit: removed incorrect data.
Click to expand...
Click to collapse
I've tried to remove battery and reboot before, nothing changed.
adb - no, did not used

Solution was - to disassemble it and assemble... After that phone booted normally. :victory:
Thank you all for your replies!

Bootloop, no Recovery, no Download

Hello,
sorry that I have to bother you with this.
I had a S6 (G920F) with Maniacx Ressurection Remix Unofficial OREO 6.10 , with Magisk 7.10 and TWRP 3.2.1 running.
Because of a problem with calls, I flashed a .zip that fixed the problem before (it's CallAudioFix.zip in that thread – can't find it right now, but I can look for it later if it's any help). That sent my phone into a bootloop.
My problem is that I can't boot into Recovery or Download mode. Windows (in a VirtualBox) finds a SAMSUNG_Android device per USB, but ODIN can't find it (doesn't show anything under ID:COM). ADB in my terminal finds the phone, but it shows it as unauthorized, so I can't use it, either.
I appreciate any help – thanks in advance!

Try pressing all botton after screen turn off press recovery combo botton fast or download mode combe ,that worked for me once when i downgraded without wiping data

amin44 said:
Try pressing all botton after screen turn off press recovery combo botton fast or download mode combe ,that worked for me once when i downgraded without wiping data
Click to expand...
Click to collapse
Thanks for your tip, didn't work for me, sadly. If I press and hold the combination for the recovery, I get back into my bootloop. If I press the combination for download mode, nothing happens until I hold it for too long and trigger the battery disconnect (volume down + power).

Bromsky said:
Thanks for your tip, didn't work for me, sadly. If I press and hold the combination for the recovery, I get back into my bootloop. If I press the combination for download mode, nothing happens until I hold it for too long and trigger the battery disconnect (volume down + power).
Click to expand...
Click to collapse
Try holding all botton for long time about 1 min ,or open phone remove battery connector and add it again ,then recovery combo ,for me it took some time and trying to get for recovery ,press combo before kernel logo appear

amin44 said:
Try holding all botton for long time about 1 min ,or open phone remove battery connector and add it again ,then recovery combo ,for me it took some time and trying to get for recovery ,press combo before kernel logo appear
Click to expand...
Click to collapse
I'll rather avoid trying to remove the battery for that.
If I hold all buttons, I can only get the "Samsung S6" screen to flash for a second before it goes off and on again (tried for a minute as you suggested).
I tried holding the combos before the kernel screen, directly at it and holding it for a minute, but it only sends me back to the bootloop. Also, I don't get any text on the kernel screen.
Guess I have to keep trying around for a bit...

Try after that flash appears for second to press combo fast i remember that worked for me at same state of bootloop

amin44 said:
Try after that flash appears for second to press combo fast i remember that worked for me at same state of bootloop
Click to expand...
Click to collapse
No luck so far with that approach yet. :/ But thanks again for the suggestion.

Samsung Galaxy a40 stuck on "powered by android" screen

Hello, I have a Samsung Galaxy A40 and yesterday I tried to flash LineageOS (I already have experience flashing gsi's), but when i rebooted the system, it just stuck on the "Powered by Android" screen.
It's not even rebooting, it just stays on that screen until the battery dies. So I've tried to let the battery drain and then booting into download mode after charging it a bit by pressing Vol Up + Vol Down and then plugging it into pc, but for some reason it just won't boot into download mode. What can I do now without having to risk booting into that screen and having to wait another full day again?

Hi,
You probably have to flash the latest firmware for your device.
If the phone freeze on the powered by android screen you can press and hold volume down + power and the phone will force reboot.
To reach download mode you can try this :
Turn off the device
Press and hold Volume UP key + Power Key for a while
Release all key when Samsung logo appears then you will see Android System Recovery
Select Reboot to Bootloader
Use Power key to Confirm

KeTuRr74 said:
Hi,
You probably have to flash the latest firmware for your device.
If the phone freeze on the powered by android screen you can press and hold volume down + power and the phone will force reboot.
To reach download mode you can try this :
Turn off the device
Press and hold Volume UP key + Power Key for a while
Release all key when Samsung logo appears then you will see Android System Recovery
Select Reboot to Bootloader
Use Power key to Confirm
Click to expand...
Click to collapse
I already have TWRP installed; also, yesterday, when i tried the force reboot button combination it didn't do anything at all...

willsonlol said:
I already have TWRP installed; also, yesterday, when i tried the force reboot button combination it didn't do anything at all...
Click to expand...
Click to collapse
How much seconds did you wait with pressed keys ?

KeTuRr74 said:
How much seconds did you wait with pressed keys ?
Click to expand...
Click to collapse
About 7 to 10 seconds

willsonlol said:
About 7 to 10 seconds
Click to expand...
Click to collapse
Try to hold it for 20 seconds, it should reboot

KeTuRr74 said:
Try to hold it for 20 seconds, it should reboot
Click to expand...
Click to collapse
I'd prefer not to boot it up now bc it's turned off, if i have to I'll try. But, is there a way to boot it into download mode when it's already turned off?

willsonlol said:
I'd prefer not to boot it up now bc it's turned off, if i have to I'll try. But, is there a way to boot it into download mode when it's already turned off?
Click to expand...
Click to collapse
The easiest step is the keys but look like it doesnt work for you.
You should try to boot with different key combination get past the bootscreen, otherwise i suggest you to got to a repair center if you can't

KeTuRr74 said:
The easiest step is the keys but look like it doesnt work for you.
You should try to boot with different key combination get past the bootscreen, otherwise i suggest you to got to a repair center if you can't
Click to expand...
Click to collapse
OKay, thank you

Update: I have tried booting it into recovery but it just got stuck again, tried to hold the combination to force reboot for about a minute and it didn't work

willsonlol said:
Update: I have tried booting it into recovery but it just got stuck again, tried to hold the combination to force reboot for about a minute and it didn't work
Click to expand...
Click to collapse
If the step above don't work i can only suggest you a repair center..