Hi everybody, yesterday I was playing with my old Galaxy A50 trying to install a custom rom unsuccessfully.
I repeated the procedure three times installing TWRP and then Havoc OS but every time I tried to reboot from TWRP to OS I was stuck at the warning screen saying that the phone bootloader was unlocked and booting into download mode to reflash TWRP was blocked as it showed "only official binaries can be installed" (yes I installed Samsung disabler but still).
Still I was able to get the phone into download mode and reinstall the stock firmware as it seemed to be the only way to install and boot TWRP.
But at 4th time repeating the process I got frustrated, shut down the computer and left the phone on the warning screen still connected to computer usb cable.
Then I got back and noticed the phone was off as the battery died.
Indeed the battery died, so I put the phone in charging and after it reached 100% I tried to boot into download mode again to reflash stock firmware.
But here's the strange thing, I cannot boot into download mode anymore as pressing vol up+vol down while connecting usb cable, shows the lightning charge logo for 5 secs and then reboots infinitely with the same pattern.
If I force reboot by pressing vol down+power it shows the Samsung logo with the warning below it, then skips to another screen with another warning suggesting to press power button to continue (which does nothing) and after a while reboots to samsung logo.
So it doesn't seem it is bricked, it looks more like a battery controller fault, so I tried to detach the battery flex from the board, hoping it would reset the controller but it's still the same.
Also I tried with the flex detached and still no download mode is possible.
Was the download mode somehow erased? (if it's even possible considering it's the motherboard firmware)
If you need photos, videos or even a call on zoom, Skype, webex I would be glad to show you
same i got the same problem i can't find nothing for this when i press volume up and down and put the otg cable its simply charges but it gets stuck on the logo image there's no way to fix this but the only way is to open the phone,change the emmc and put one from samsung,close the phone flash a custom rom and you are done.
If you can enter recovery, do it. As soon as your phone gets into it, select the power off variant and then try to enter the download mode.
It seems like you did not unlock the bootloader, did you?
The bootloader Is unlocked i can't enter in the recovery because the phone locks on charging logo and its fully charged but when i try without charger It doesn't start.
Related
I was provided this device to try and help resolve the issue. I am not sure how it got to this point. I believe that it was rooted with a custom ROM, then the individual tried to install a stock ROM (method unknown).
The current situation is:
Galaxy Tab S 10.5 SM-T800 stuck in a bootloop with the TWRP logo on the screen. I can not get the tablet to go into download mode. I have tried all of the different methods to enter download mode, i.e. Power & Vol - & Home, Drain the battery > Plug into PC while holding Vol - & Home, Power & Vol + & Vol -. None of these combinations do anything. The only thing I can do to get a response is to press Power & Vol +, which reboots the device right back into the TWRP loop after the Samsung Logo. Power button alone does nothing.
The device is seen by Windows with the Samsung Drivers but is not mounted to a drive letter, and I can not mount it.
ADB , fastboot and Odin do not see the device.
I would like to flash a new rom either custom or stock, but I need to be able to get the device into download mode so it can be seen by odin.
Any help would be great.
Mike
Probably just timing and pilot error this one. I've never known of any Samsung device boot but be incapable of booting to download mode as download mode is bootloader related.
No working bootloader means dead device.
No matter what state the device is in at the moment with the usb cable removed, hold POWER + VOL DOWN (not up) + HOME until the Samsung boot logo comes up, hold for another couple of seconds then release. Download mode should appear.
I know it should be easy....
I know it should work but it is not, I will make a vid of the process and post. I can not make heads or tails.
Mike
ashyx said:
Probably just timing and pilot error this one. I've never known of any Samsung device boot but be incapable of booting to download mode as download mode is bootloader related.
No working bootloader means dead device.
No matter what state the device is in at the moment with the usb cable removed, hold POWER + VOL DOWN (not up) + HOME until the Samsung boot logo comes up, hold for another couple of seconds then release. Download mode should appear.
Click to expand...
Click to collapse
Is the home button actually working, are you pressing it firm enough?
If the home button doesn't register then the tablet will simply reboot.
Its a bit odd why twrp doesn't fully boot though unless it's the wrong one.
Does it hang at the twrp logo or continually reboot?
Hi all, I've been using XDA for years since the original O2 XDA's and I have never had to post anything as I've always found my solution. I'm hoping somebody can assist me with a problem I have on this stock galaxy tab 3.
The device was brought to me after being thrown down the stairs. I replaced the screen and built it back up,
Removed battery connector and reconnected = nothing happens
Press power = nothing happens
press download mode = nothing happens
press recovery mode = nothing happens
Plug USB into PC = nothing happens on PC or tablet
Plug in USB mains charger and it displays battery charging logo but it doesn't fill or animate the fill then it starts the samsung boot screen. It reboots and continues to do this constantly and never ends.
I've tried two batteries and both batteries work in another tab 3 but neither batteries changed how the device works.
Thank you for any advice in advanced!!
I just received a Tab 3 lite (SM-T110) for repair, it's having a similar problem.
It does automatically turn on when plugged into charger or computer.. It is stuck on a bootloop, requiesting a Kies recovery. It does reboot when given the three finger salute (center button, volume down, and power) - it will not enter recovery mode though - same firmware error message). The device is also full off or full on, no indication of it's it's recharging or no - let the battery run out, it's off - else it's on (does not turn on or off with power button). I don't have any info how it got into this state - most likely power loss during a firmware update, but haven't ruled out other possibilities (ie bad rooting job, a custom ROM upgrade went wrong, etc). I'm not 100% concerned about cause, but hopefully I can unbrick the thing.
Anyways, I loaded Kies onto my computer and put it into recovery mode and plugged it in - nothing. Exit the recovery mode of Kies, and all of a sudden the program goes nuts trying to connect and disconnect from the device. Hmm... Okay, disconnect it, uninstall Kies, install Kies3 and try again - same thing except it complains the device is too old when the program leaves recovery mode - but same thing otherwise - does not show up in recovery mode, connects and disconnects at huge rate when not in recovery mode....
Hmmm...
Now looking at the screen, it does indicate (in the upper left hand corner) that it's in ODIN mode... So my next step I figure I'll try ODIN (although I'm researching ODIN at the moment as I haven't used it before (never had to unbrick anything from Samsung prior to now).
Okay, that was painless - downloaded and installed ODIN 3.10.7, and then downloaded the latest firmware from Samsung, extracted the firmware, added it to ODIN's AP line, then hit start to push the latest firmware onto the tablet. Good as new again.
So I used twrp to flash the pixel rom on my A505F and it all worked but then I went into the magisk app and it said it needs to update so I pressed update and then it restarted and never went past the warning screen(the one where it says your bootloader is unlocked and press power key to continue).I can only hold both volume keys + power button to restart it and it shows the galaxy a50 logo quickly and goes to the warning screen again. When I put it to charge the charging lightning logo appears and sometimes flashes but it doesn‘t show a precentage. I also can’t acess twrp or download mode or connect my phone to adb but I might be doing something wrong so idk. Please help. I can’t afford to buy a new phone.
Hello,
my wife got a S21 FE (SM-G990B/DS VD2). Yesterday it started to reboot over and over out of a sudden, showing the samsung logo first, followed by the knox logo, then shutting off and on again. Tried several guides to enter Recovery or Download Mode. The only thing that worked was entering download mode by pressing Vol up, down and power while a USB-Cable is plugged in, but as soon as i press the vol up button to pass the "warning screen", it shows some phone specs for a couple of seconds, shuts off and starts bootlooping again. After some hours, the phone once entered recovery mode when it lied next to me for about an hour. Tried to wipe cache, but just got an error I can't remember right now. Hoped it fixed itself when it made it to recovery and just rebooted to see if it works again, but then it just keept bootlooping again.
Since then I couldn't figure out why it once booted to recovery on it's own nor why I can't force it to enter recovery by pressing vol up + on.
Still hope it's just a faulty update or bug, but feels very much like it's a hardware related issue. Replacing the phone won't be an issue, but I'd really want to save data on the phone as my wife didn't make any backups and really wants to keep the photos.
As I just found guides that included recovery or DL-Mode, which are both no valid options for my case, I'd be thankful for any ideas to fix the phone or at least gain access to files before replacing it.
So.. did anyone come across similar issues and found a solution to revive the phone or are there any "unpopular" ways to recover samsung phones out of this state?
Edit:
Turned off completely overnight, booted once to system, looped again and now it's working like nothing ever happened. Got no clue what caused it or why it is working again. Saved everything for the case it happens again.
Wouldn't trust that device anymore, but my wife wants to keep it.
¯\_(ツ)_/¯
I would just like to reply here and add my own potential fix and also would like confirmation that it would work.
So I have a SM-G996B in a boot loop which returns a 'fs_mgr_mount_all' error. Possible to reboot into recovery mode, cleared cache and restarted bootloader etc with the same boot loop. Powered off and connected to PC for Download mode for ODIN recovery but upon pressing volume up, it then restarts again so Download mode recovery is impossible.
I know however that Developer options and USB debugging was enabled on the device as well as unlocked boot loader. I was able to download the correct original stock OS based on the PDA , CSC and Android version.
I have then installed the latest ADB software on my PC and Samsung USB drivers.
By then rebooting into recovery mode, I have the option of 'Apply update from ADB'. I have then confirmed the device connects using the ADB devices command.
I would like to clarify one thing however. I want to keep the user data at all costs. By using the stock firmware and renaming as update.zip, will it use the HOME_CSC and not the CSC file? If not would it work if I open the zip and remove the CSC before re-zipping to make sure?
Thanks
Reebee said:
Hello,
my wife got a S21 FE (SM-G990B/DS VD2). Yesterday it started to reboot over and over out of a sudden, showing the samsung logo first, followed by the knox logo, then shutting off and on again. Tried several guides to enter Recovery or Download Mode. The only thing that worked was entering download mode by pressing Vol up, down and power while a USB-Cable is plugged in, but as soon as i press the vol up button to pass the "warning screen", it shows some phone specs for a couple of seconds, shuts off and starts bootlooping again. After some hours, the phone once entered recovery mode when it lied next to me for about an hour. Tried to wipe cache, but just got an error I can't remember right now. Hoped it fixed itself when it made it to recovery and just rebooted to see if it works again, but then it just keept bootlooping again.
Since then I couldn't figure out why it once booted to recovery on it's own nor why I can't force it to enter recovery by pressing vol up + on.
Still hope it's just a faulty update or bug, but feels very much like it's a hardware related issue. Replacing the phone won't be an issue, but I'd really want to save data on the phone as my wife didn't make any backups and really wants to keep the photos.
As I just found guides that included recovery or DL-Mode, which are both no valid options for my case, I'd be thankful for any ideas to fix the phone or at least gain access to files before replacing it.
So.. did anyone come across similar issues and found a solution to revive the phone or are there any "unpopular" ways to recover samsung phones out of this state?
Edit:
Turned off completely overnight, booted once to system, looped again and now it's working like nothing ever happened. Got no clue what caused it or why it is working again. Saved everything for the case it happens again.
Wouldn't trust that device anymore, but my wife wants to keep it.
¯\_(ツ)_/¯
Click to expand...
Click to collapse
Similar issue with same phone. In a bootloop after trying to root. None of the button combinations have worked for me, for the past several days.
Tried powering the phone off for the whole night.
When connected to the PC shows phone is in recovery mode via adb (blank screen though).
Want to know how to get into DL-mode, guaranteed.
Got to DL mode by pressing vol up + down + power + usb cable connected in PC and phone. However, couldn't do anything there, but maybe you can
Also, phone is still working and I still have no clue what was the problem and what fixed it.
I rooted my Galaxy a70 using vbmeta,Twrp and magisk. All was going well. Suddenly my phone turned off and when I press power button its shows download mode .so I tried odin to flash but every time it fails.After many tries I realise that its port are not connecting to pc ,its only charging and my pc also can't detect my phone ..now when I connect the phone to pc its shows samsung logo.its also not showing the battery percentage .
(My pc is ok it have all driver installed and odin works)
Is there anyway to solve.
Thanks.
reboot pc just to be sure.
connect phone and pc
on the phone in download mode screen, hold vol down and power till screen goes blank immediately let go and hold vol up and down to boot back into download mode. the letting go when screen goes blank to holding up and down needs to be fast.
now once back in download mode, is odin showing port number?
also make sure your using odin 3.13.3
if still no go, try uninstalling samsung usb drivers, reboot then reinstall and try the process again.
When I put cable in my phone it directly shows the logo....
Its not showing the battery
I tested my another Samsung phone to be sure that my softwares are working. And it's working but when I put my A70 in. Nothing happened