[HELP] A9 does not start after reboot ! - Galaxy A3, A5, A7, A8, A9 Q&A, Help & Troubleshoot

Hi All,
I've got an A9 and upgraded to 6.0 through OTA last week. everything had been running fine.
today I found abit laggy when switching apps during games, the laggy feel keeps there after killing everything so i decided to reboot.
GOD, the phone just wont start again, i did Power + vol up/down ; power + vol up + home, plug into computer but nothing happened.
any method i can solve this ? or i can only bring it to services center ?

Have you tried odin mode as well? Try charging it to 100%,phones do sometimes switch on automatically. I believe there is also a method to check if your phone is alive by connecting it to a pc and using the device manager, but I'm not sure

Related

boot loop after trying to flash twrp 2.2.1

Okay so I seem to have run into a little problem I was planning on updating cleanrom up to 1.2.5 but was on cwm. I had managed to switch over successfully to twrp 2.2.0. I went ahead and used goo manager to download the updated zip of 2.2.1 and tried flashing it thru twrp. Now I am stuck in google bootloop and cant get into recovery or more importantly bootloader. I have been trying last 30mins to hold power and both volume buttons but it either keeps rebooting back to the google screen or not doing anything at all just have to repress to to turn it off but it will turn back on automatically. I tried hooking it up to my usb and labtop but it looks like it wont even recognize it. I just fully charged it so I am good for now just a little worried cant get out of this mess.
I ran into a problem like that with clockwork recovery it kept on rebooting in recovery but I could still go into download mode I was at work away from my computer so I had no choice but to keep trying that three button magic until it finally restored a backup I had on my external card.just keep on trying to pull the battery then try to go into recovery. You might 've gotten a bad download
Sent from my SGH-T999 using xda premium
problem is I cant get into recovery. or the green screen to get to bootloader. It just completely stuck in a bootloop on the google screen mocking me... I am really contemplating opening it up and taking out battery but is that a good idea? Or is there anything else I can do?
so I pulled off the back cover but really dont want o disconnect the battery might mess something up but I cannot get the device to shut off.
disconnecting the battery does nothing it shuts it off and keeps it off but when I connect it to the charger the battery symbol pops up for a second and then goes completely blank. I went ahead and tried again to boot into bootloader pressing power vol up + down and all combinations of power vol -, power vol +
power turbo press vol +/- but no luck still in google screen.
If you're in a bootloop you need to connect your Nexus 7 to a computer. Then you will be able to access recovery via the Power button and volume buttons.
is it going to make a difference that everytime i try to reboot it just the black google screen? I have tried it connected to the wall charger and connected usb to the labtop but nothing.
clago87 said:
is it going to make a difference that everytime i try to reboot it just the black google screen? I have tried it connected to the wall charger and connected usb to the labtop but nothing.
Click to expand...
Click to collapse
It's supposed to do that when you're trying to go to recovery from bootloader without the USB cable plugged into a computer, may need to have the drivers installed on said computer. It's an issue with the nexus 7 bootloader and every one of them does it. What your experiencing is perfectly normal if you tried to go to recovery from bootloader with the bolume buttons and then got the google screen bootloop.
If it doesn't work when you plug it in and try, then try unplugging it, manually rebooting with it plugged in first, or vice versa
Update: I can get on Team Viewer and remotely reboot you into recovery through the PC if you want, or at least give it my best shot.
ok so i disconnected battery and have the device off. I should then try connecting it to the pc and try booting up holding down all buttons?
clago87 said:
ok so i disconnected battery and have the device off. I should then try connecting it to the pc and try booting up holding down all buttons?
Click to expand...
Click to collapse
Have you installed the right drivers on the computer you're using, for ADB and the device drivers, when you unlocked and rooted?
Answer to your question is yes try that. But I wouldn't be disconnecting and reconnecting it, I can't recommend that and then learn tomorrow that static zapped something important.
yea I am getting nothing by connecting to pc. I have all the drivers adb and fastboot installed when I rooted and unlocked couple weeks back but it looks like device is not being recognized or read at all by the pc.
connecting to the pc holding the volume + button gets it recognized for a second and tries to install a driver apx but unsuccessfully.
I am not making any progress whatsoever kinda sucks starting the weekend like this. I have gone thru some bad stuff with my atrix but nothing like this were I cant even access my bootloader boot into recovery or even fastboot. Should I try and get it to just stay off and see if overnight it works its own magic? Hate going to sleep witht his on my mind but I think with a clear mind in the morning something good will happen.
I can get it to stay off by holding both vol+ and vol- but trying to turn it off with just the power button just keeps it turning back on/off...
so I slepted on it thru the night let the tablet rest but went back this morning and I still cant get into bootloader or recovery. Is there anything I can do?
Has anyone else had this problem where they cant boot into recovery or bootloader? It's like the power button and vol keys are unresponsive even though they still work to turn on the device.
are you sure that you flashed the right recovery? but you should still be able to get the bootloader. are you pressing power + volume down(volume down, not both volume buttons. i noticed you wrote both volume buttons) to get into the bootloader?
I think I chose the right recovery the first version downloaded thru goo manager but it was the 2.2.0 version. I had the option on the of downloading the 2.2.1 zip or the .img but i downloaded the .img to just to flash with the current version of twrp that was working. There have been times were I have not been able to get into recovery on my atrix or htc but I've always been able to get into the bootloader this is the first time I've been locked out of my device kind of got me scared its not even a month old. So you say to get into bootloader you dont have to hold down both volume buttons? I will try again to power back up using the volume down and power button at same time... Wish me luck
clago87 said:
I think I chose the right recovery the first version downloaded thru goo manager but it was the 2.2.0 version. I had the option on the of downloading the 2.2.1 zip or the .img but i downloaded the .img to just to flash with the current version of twrp that was working. There have been times were I have not been able to get into recovery on my atrix or htc but I've always been able to get into the bootloader this is the first time I've been locked out of my device kind of got me scared its not even a month old. So you say to get into bootloader you dont have to hold down both volume buttons? I will try again to power back up using the volume down and power button at same time... Wish me luck
Click to expand...
Click to collapse
good luck!
yea, only power button and the volume down button.
quick question before I connect the battery does it make a difference whether or not I have it plugged in charging or connected to the PC while trying to boot into bootloader?

Problem with Volume Button, Software or Hardware?

Hello! Got a problem with my Galaxy S 4. Removed T-Mobile brand, flashed the stock ROM MH5 and unlocked the device by code.
Do not know if the problem existed before, at least following phenomenon occurs: after a certain time (depending on how long the battery was out - more on that below) the volume down button no longer responds - initially Vol button respnds normally, suddenly the volume turns down and I can only press volume up, volume down does not respond anymore - when I reboot the device, it always boots in the mode where I can push vol up to install a custom Rom or volume down for restart - but neither Vol up nor Vol down respond. If I restart the device with volume up + Home + Power button, I can not get into recovery but in Safe Mode.
Only when I take out the battery and wait (approx half an hour), the unit boots normally and the error occurs again after some time...
I also made a factory reset - no success. Somebody knows this phenomenon? Thank you.
Maybe
liquidspace said:
Hello! Got a problem with my Galaxy S 4. Removed T-Mobile brand, flashed the stock ROM MH5 and unlocked the device by code.
Do not know if the problem existed before, at least following phenomenon occurs: after a certain time (depending on how long the battery was out - more on that below) the volume down button no longer responds - initially Vol button respnds normally, suddenly the volume turns down and I can only press volume up, volume down does not respond anymore - when I reboot the device, it always boots in the mode where I can push vol up to install a custom Rom or volume down for restart - but neither Vol up nor Vol down respond. If I restart the device with volume up + Home + Power button, I can not get into recovery but in Safe Mode.
Only when I take out the battery and wait (approx half an hour), the unit boots normally and the error occurs again after some time...
I also made a factory reset - no success. Somebody knows this phenomenon? Thank you.
Click to expand...
Click to collapse
Try replacing the battery with a different one then see if it works. if not do this:
Download the stock MH5 ROM from SAMMOBILE
Open Odin
Flash this ROM with Odin
make sure that only Auto Reboot and F. Reset Time are the only options ticked
I personally havent had this problem but it might help
EDIT: This sounds like a software issue but if it keeps happening it may infact be a hardware issue with the device itself
Thanks, but I already flashed Stock MH5 and now MH7 T-Mobile branded - when the device is off for about an hour, the S4 boots normally and the Volume up and down works fine, two minutes later Vol down doesn´t respond anymore...it´s weird
I still don´t belive it - tried the battery from a mate´s S4 - mine works fine again, no Vol button errors or startup problems...can somebody explain this to me...crazy ****...

Soft bricked my T280 and so confused!!

I recently updated my Samsung Galaxy Tab A T280 to the latest firmware and I lost my root. So this afternoon I re-rooted it. Or I attempted to, anyway. Everything seemingly went fine, and I booted into TWRP just fine. I went to flash the ROM and I also selected wipe cache/davlik cache to be done as well, and tapped reboot. My device then turned off and when it started the reboot, it got stuck on the Samsung Galaxy Tab A logo screen and would not move or power off by holding the power button (I tried for a LONG time by using a rubber band to hold it down so I didn't have to, with no luck), and every other combination of buttons wouldn't do a thing, except for holding power + vol down, which made it turn off and back on, but it wouldn't finish rebooting and it just got stuck at the Samsung Galaxy Tab A logo again. So then I thought that maybe plugging it into a charger might not be a bad idea, and after holding down power + vol down again, it turned off and turned on and showed a battery with a charging symbol. I've had it plugged in for an hour and it does not show a charge or do anything except for go back to that boot logo if I unplug it from the charger and again hold down power and volume down separately.
I know it's not hard bricked because it is somewhat responsive so I think there's a chance to fix it, hopefully. I just want it to turn on and fully reboot into anything or in any way that will allow me to be able to fix the issue. My computer will not recognize the device so ADB is not an option right now unless I'm wrong.
Thanks a lot guys, I am so confused and could really use some advice.
What firmware did you install
Try to install original firmware via software "Samsung Smart Switch" on your PC with connected tablet.
I too recommend that you try installing the last firmware that you were on via Odin. Also, when you hit that screen lock issue after a firmware flash, where only the Samsung logo appears do this:
1. press and hold Home + volume up and volume down along with power button (that's all 4 buttons). Hold it there for at least 20 seconds and it should power off.
2. Once the device powers off keep holding the buttons but let go of the volume down button.
3. Once the tablet starts to power back up again release the power button and then in about 1 to 2 second release the rest of the buttons.
This should get you back into recovery. You should at least be able to restore any backup, that you should have already, on your external micro SD.
Good luck.. : )
"Chance Favors the Prepared"
the above post is 100% right. Reboot back into recovery and you'll be good to go. Also twrp has a option to reboot back to recovery so this doesn't happen, just a fyi for future knowledge. Best of luck..
You tried to flash a rom with twrp?
You need to flash stock firmware with odin.

s7 bricked

My wife's s7 had a security update recently, it keep installing updates, rebooting, installing updates again, rebooting and kept repeating. So i force restarted it. Then it doesnt boot up anymore. Tried to go into recovery, download mode with the usual key combinations (vol up + power + home, or with volume down + power) - nothing works. charging doesnt show any indicator lights on the phone, but wireless charging does show indication on the wireless charger itself...
Tried USB-JIG - doesn't work either but it works on my Note 3. Does anyone have any ideas on what are the options are to fix this?

Galaxy A40 infinite loop - impossible to turn on

Hi!
I have a problem with a galaxy a40 device, I flashed a stock ROM with Odin, everything went fine, green lights, PASS and all, but now the device just won't go pass the SM logo anymore. When I turn on, logo appears 2-3 secs I get a warning of the unlocked BL then logo comes back and after a second the phone restarts itself and the same goes on forever ( well about several hours, and after that it just shuts off somehow ). I cannot enter recovery mode or download mode at all. I keep pressing the combinations Power + Vol Down, Power + Vol Up, All three and every combinations I have just found on the internet so far. Odin doesnt recognize the phone, which is not a surprise since it won't start up. I have tried with adb but waiting for device is all I get.
How is it even possible that I cannot enter download mode at all? There was no problem with the physical keys, and the power still works, I cannot test the Vol buttons tho.
Has anyone ever had a problem like this? How can I come back from this? Is there a way to flash a ROM without download mode or turned off phone?
Thanks for any help!!
The download mode for this model is different from previous Samsung's :
IIRC, with the phone off, you need to hold VolumeUp and VolumeDown, then plug in the USB cable connected to a computer (you may need to press Power to power up the phone, I can't recall properly).
From there, you should be able to restore a stock ROM with Odin.
Let us know if it helped !
gmarko247 said:
Hi!
I have a problem with a galaxy a40 device, I flashed a stock ROM with Odin, everything went fine, green lights, PASS and all, but now the device just won't go pass the SM logo anymore. When I turn on, logo appears 2-3 secs I get a warning of the unlocked BL then logo comes back and after a second the phone restarts itself and the same goes on forever ( well about several hours, and after that it just shuts off somehow ). I cannot enter recovery mode or download mode at all. I keep pressing the combinations Power + Vol Down, Power + Vol Up, All three and every combinations I have just found on the internet so far. Odin doesnt recognize the phone, which is not a surprise since it won't start up. I have tried with adb but waiting for device is all I get.
How is it even possible that I cannot enter download mode at all? There was no problem with the physical keys, and the power still works, I cannot test the Vol buttons tho.
Has anyone ever had a problem like this? How can I come back from this? Is there a way to flash a ROM without download mode or turned off phone?
Thanks for any help!!
Click to expand...
Click to collapse
Here the same problem, have a40 in loop and never get rocgnized for computer, tryed many different cables, and installed a booring large amount of drivers software and nothing...
you need to power off device completely. let battery drain if you can't shut down. press and keep holding volume down + plug in usb cable for Odin3 (I doubt both?)
aIecxs said:
you need to power off device completely. let battery drain if you can't shut down. press and keep holding volume down + plug in usb cable for Odin3 (I doubt both?)
Click to expand...
Click to collapse
Generic answers, repeated 800 times why really need to waste a post with that? and that not was the problem:
1- For no usb recognition, is this phone bad design, in the back tap where is the battery in the samsung logo more or less if you push with fingers and charge is because the design of baterry is so crap and your usb port goes off when the under tap cable moves or just get little out of conection. If you can get working after push, usb on phone will do too.

Categories

Resources