Boot Looped - Samsung Galaxy A40 Questions & Answers

Hello! Here is my story:
I had a rooted stock os where i just changed the boot anim and everything was fine. I rebooted my device yesterday , the boot anim was fine etc. until today. When i rebooted my phone today , it booted into download mode with no reason. I didnt do any crap on it and it was fine until today. When i was in download mode i remembered i had a custom rom on my sd card so i wanted to flash twrp. I flashed it without factory reset and it didnt work. Now im stuck in a boot loop and i tried entering recovery but doesnt work.
Ok so i saw you can enter download mode with some key combo but u need the home button which this phone doesnt have (on screen controls).
Is there a way i can go in download mode and flash stock firmware with odin or unbrick the phone?

Enter Download Mode : Turn Power Off. Press and hold Volume Up key + Power Key, When Samsung Logo appears release Power Key only, keep pressing Volume Up key until Android Recovery Mode Appears.

I managed to find this method a long time ago so its fixed. Thanks for responding doe.

Related

[Q] LG G2 stuck for no apparent reason

Ok, so I installed the LG G Pro 2 ROM, had it rooted and ofc had stock recovery ... My Wi-Fi (for some odd reason) didn't want to turn itself on, so i tried to restart the phone .... It got stuck in a bootloop, so I'm having following problems ... I entered stock recovery and tried to wipe the rom, no help, still stuck in recovery .... Can't access download mode to flash a KDZ file, since I cant really "shut" the phone down, rather just "restart" it by long pressing the power key, and if i try to hold the vol up button while connecting it to the computer to enter download mode, it fails every time and it just goes to the LG logo and get's stuck there .... Can I somehow shut the phone down completly or flash a kdz file from stock recovery ?
Edit: OK, I somehow did shut it down completly ... I think i held all 3 buttons at the same time for like, 10 - 15 secs and it did shut down completly ...
So - sorry for the thread, mods can lock it!
Doomhamma said:
Ok, so I installed the LG G Pro 2 ROM, had it rooted and ofc had stock recovery ... My Wi-Fi (for some odd reason) didn't want to turn itself on, so i tried to restart the phone .... It got stuck in a bootloop, so I'm having following problems ... I entered stock recovery and tried to wipe the rom, no help, still stuck in recovery .... Can't access download mode to flash a KDZ file, since I cant really "shut" the phone down, rather just "restart" it by long pressing the power key, and if i try to hold the vol up button while connecting it to the computer to enter download mode, it fails every time and it just goes to the LG logo and get's stuck there .... Can I somehow shut the phone down completly or flash a kdz file from stock recovery ?
Edit: OK, I somehow did shut it down completly ... I think i held all 3 buttons at the same time for like, 10 - 15 secs and it did shut down completly ...
So - sorry for the thread, mods can lock it!
Click to expand...
Click to collapse
download mode. try holding power button down for 20+ seconds. now hold volume up button while plugging in usb cable.

Cannot enter recovery mode after updating CM13 nightly

Hey guys,
I feel totally stupid for writing this post but I'm actually out of ideas how to get out of my situation. Also I didn't find any comparable topic here on xda. So let's hope you can help me and a big thanks in advance!
First of all i have a flashed D802 running TWRP and CM13, which worked well the last weeks. I thought about updating to the todays nightly as it is already a few weaks since I did my last update. I downloaded the nightly via the CM downloader and started the installation with running phone. It rebooted into recovery mode and installed the nightly without any problems. After the installation was completed the phone automatically rebooted and this is where the problem starts.
I am stuck in "bootloop?" at the CM logo. It is not automatically restarting after a while but just loading and loading and nothing further happens. I am not able to enter the recovery mode via the factory reset (Pressing Vol Down + Power, releasing after the lg logo appears, pressing and holding the power button again).
This never happened to me and as I am not able to enter TWRP I am not able to install a previous release or a backup. What am I doing wrong this time and what can I do?
Thanks for your support!
have you tried flashing a stock rom?
restlessone said:
have you tried flashing a stock rom?
Click to expand...
Click to collapse
Actually I don't really know how to do this when I'm not able to enter the recovery mode? Is there a certain way to do this?
In the meantime I managed to enter the recovery mode / TWRP via a mode I don't know how it is called. I pressed vol down + pw btn, released after the LG logo appeared and pressed vol up + vol down. I guess my userdata is deleted by now, which shouldn't be a big deal but I am getting redirected to the recovery mode. I tried to install the yet working CM13 nightly but it has the same problems now.
Now I have two questions:
Does anyone know which part of the system is broken now / which part I need to update in order to get my phone back to life?
Is the download mode working if my phone is rooted? I am able to enter this mode.
.flo. said:
Actually I don't really know how to do this when I'm not able to enter the recovery mode? Is there a certain way to do this?
In the meantime I managed to enter the recovery mode / TWRP via a mode I don't know how it is called. I pressed vol down + pw btn, released after the LG logo appeared and pressed vol up + vol down. I guess my userdata is deleted by now, which shouldn't be a big deal but I am getting redirected to the recovery mode. I tried to install the yet working CM13 nightly but it has the same problems now.
Now I have two questions:
Does anyone know which part of the system is broken now / which part I need to update in order to get my phone back to life?
Is the download mode working if my phone is rooted? I am able to enter this mode.
Click to expand...
Click to collapse
yes you can enter the download mode: turn down your phone, press and hold volume up button and connect the usb cable, release volume up when your screan shows dowload mode.
then follow this tutorial to restore your phone back to stock http://forum.xda-developers.com/showthread.php?t=2432476
restlessone said:
yes you can enter the download mode: turn down your phone, press and hold volume up button and connect the usb cable, release volume up when your screan shows dowload mode.
then follow this tutorial to restore your phone back to stock http://forum.xda-developers.com/showthread.php?t=2432476
Click to expand...
Click to collapse
Thanks! At least the phone is working at all now.

S7 Edge stuck on boot logo ( G935FD )

I tried flashing the bootloader from here.
Then it went crazy or something, and got stuck on the powered by android logo, however i was still able to boot into download mode the first time by holding power + volume down button
to simulate a battery pull then quickly holding the volume down + home + power again. Then I tried flashing TWRP immediately in an attempt to make it work because i have a flash drive to microUSB adapter that allows me to read flash drives from my phone ( so that I can flash the rom properly ). The last time I was in TWRP there was 0 things in my storage everything was wiped after I flashed TWRP the first time
Now im trying to go back into download mode but it just wont let me after the battery pull.
1.) After simulating the battery pull, I immediately let go when the screen is dark.
2.) I immediately attempt to go into download. It shows the powered by android for a second, then flickers then it's back to the powered by android again.
3.) I think my recovery and download is screwed. Or something is going on
=== EDIT ===
I managed to get into download mode and flash back my stock rom.
I think the phone must have read my Power & Volume Down & Home button as the battery pull because I let go of all buttons completely before doing it.
Steps to get out of bricked hell:
• Hold Power & Volume Down until the phone turns off
• Immediately without letting go of the Power & Volume Down button, press the home button as well.
• If the timing is not correct just retry.

HELP! S8 won't boot after updating TWRP

I updated TWRP to 3.1.1.2 inside TWRP. The issue I encounter now is that my S8 stucks on the very first booting screen. You know the very first screen where it stated "Samsung Galaxy S8" and down below "powered by android".
I can't do anything. It's just like the phone has frozen at that state. Nothing works anymore. Even If I try to turn it off by pressing Volume down + Bixby + power button, it just restart and get stucks at the boot screen again and again. There's NO boot loop.
I'm on europe version of the Galaxy S8
stock rom and rooted (Magisk)
Got TWRP installed but after updating TWRP the phone freeze at the very first booting screen.
Any help would be appreciated!
Thanks for your efforts!
First of all - make sure you have the correct TWRP for your device. I know for myself that by searching google I got the S8+ twrp at first and flashed it by mistake without noticing.
Then try this-
Connect your device to a power socket (pc or wall, doesn't matter)
When you are on the very first screen, turn off the device by pressing Power + Volume down. Your device will shut down and you will see the charging animation.
Once you see it, disconnect the device from the USB and try one of the following:
Power + Volume up + Bixby for recovery mode
or
Power +Volume down + Bixby for download mode
I think the download mode will work, then just flash a stock rom or the correct recovery and try again
I failed right at the second step. Once I connect my S8 to power socket and tried to turn of the device by pressing Volume down + Power, the device turnt off for about 2 seconds and then reboot again to the very first screen. Even if my S8 is on power socket, I do not see the charging animation. So that is why I cannot continue with step 3.
Any Ideas buddy?
EDIT:
I got it enter the download mode
I downloaded the TWRP img from here https://eu.dl.twrp.me/dreamlte/
After enter the download mode, I flash TWRP via odin. It passed via Odin but my S8 doesn't enter TWRP but instead stuck at the very first boot screen.
Any ideas, buddy?
EDIT:
I've solved it myself. Thanks for your efforts!
I got the exact same problem but how did u do it please help me
Hi I just got the exact same problem as you but I cannot get how I would fix it please help???
Edit: I got it to download mode but I do nut understand how I would flash it
The only way around this I found was to Odin back to stock https://forum.xda-developers.com/galaxy-s8+/development/rom-galaxy-s8-t3749444
Then follow the instructions to reinstall twrp using odin https://forum.xda-developers.com/ga...-s8-exynos-t3847712/post77735501#post77735501

Zte blade a7 2019 not getting into recovery mode

Hello i am trying to root my 1year old heavy used phone . I am Stuck at the very first step.
Also it should be mentioned that it got a little bit wet by rain someday and then the volume down button was stuck (not mechanicly) it forced the volume setting to zero and had no sound.
I soft reset it . Than no change. had a hard time getting into recovery but i finally got there somehow i dont remember how.
Then hard reset it.No change....
After one day the volume key fixed itself and everything is working fine.
now after one month i was curious if i could root it. But i am not able to get into bootloader state.
I tried everything.
Debug options and oem bootloader unlock switch enabled, usb debugging enabled.
Usb adb says no permission (serial n visible)
Entering Recovery mode at power off state by
Pressing vol up and power button gets normal boot everytime but much faster logo visible at about 3sec.
pressing power + vol down = it takes 25sec
Booting normal .. and the same happens when pressing both vol keys.
I am releasing the keys at zte logo visible everytime
Something was strange : one time when i was trying something it bootlooped 3 times and then it was safe mode.
could there something in the volume button be broken? but the button work fine. I dont know.
Thanks for reading
update:
ok the permissions was a linux issue(start the adb-daemon with su), i can use adb now on this phone,
i can boot it in recovery now, but cant boot into bootloader
adb reboot bootloader leads to normal boot
in recovery, the reboot into bootloader option also normal boot

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