Boot looping A8 - Samsung Galaxy A8 (2018) Questions & Answers

Hi all,
I have a Samsung A8 that I have been given to me to sort out.
Its currently boot looping at the initial Samsung Logo.
I can get into this recovery mode section shown in attached picture.
The person tells me they went into this mode and pressed Wipe Data/Factory reset as well as Wipe Case Partition.
Since they did this, its been boot looping, it was working perfectly fine before hand.
Im not sure if this has already been rooted or if this is a custom recovery rom?
Not had to deal with rooting or anything for quite some years!
Could anyone help?
Is this rooted, and could I just flash a custom ROM to get it back up and working.
Or is their a stock ROM I can just flash to get this working?
Any help would be really appreciated!
Cheers

keef01 said:
Hi all,
I have a Samsung A8 that I have been given to me to sort out.
Its currently boot looping at the initial Samsung Logo.
I can get into this recovery mode section shown in attached picture.
The person tells me they went into this mode and pressed Wipe Data/Factory reset as well as Wipe Case Partition.
Since they did this, its been boot looping, it was working perfectly fine before hand.
Im not sure if this has already been rooted or if this is a custom recovery rom?
Not had to deal with rooting or anything for quite some years!
Could anyone help?
Is this rooted, and could I just flash a custom ROM to get it back up and working.
Or is their a stock ROM I can just flash to get this working?
Any help would be really appreciated!
Cheers
Click to expand...
Click to collapse
so, that screen is the stock recovery where, yes, you can wipe everything that was on the phone, which is actually a good thing. Turn the phone off completely, let it sit for a couple seconds once youre certsin that its completely off. Press and hold both volume buttons and then simultaneously press and hold the power button until it buzzes. When it buzzes, release the power button but continue holding the volume buttons until a screen comes up that asks you to press up to continue or down to reboot. Press volume up, take a pic of that screen and post it up on here. Thats "download mode" aka "Odin mode" From there you can flash the stock firmware and rid yourself of the insidious bootloop. Youll need the firmware from sammobile.com/firmwares tho. Anyways, get to that screen and post the pic up so we can further assist! Have a good day!

keef01 said:
Hi all,
I have a Samsung A8 that I have been given to me to sort out.
Its currently boot looping at the initial Samsung Logo.
I can get into this recovery mode section shown in attached picture.
The person tells me they went into this mode and pressed Wipe Data/Factory reset as well as Wipe Case Partition.
Since they did this, its been boot looping, it was working perfectly fine before hand.
Im not sure if this has already been rooted or if this is a custom recovery rom?
Not had to deal with rooting or anything for quite some years!
Could anyone help?
Is this rooted, and could I just flash a custom ROM to get it back up and working.
Or is their a stock ROM I can just flash to get this working?
Any help would be really appreciated!
Cheers
Click to expand...
Click to collapse
Flash Firmware using Odin and also tick Nand erase

was your problem sorted out

Related

[Q] [A701] unrecoverable bootloader error (0X19000008)

I installed a update.zip(Acer_AV043_A701_0.006.00_WW_GEN1.zip).
then,My A701 restarted, but it's stuck at the ACER logo.
I hook up this device to the PC ,but not go to fastboot mode , "MTB drivers" is no found.
I pressed the "volume up"- and the "power"-button at the same time, released the power-button when the screen turns on and switched the lock switch on and off and on and off: top left corner of the screen says "Erasing Userdata... Unrecoverable bootloader error (0x19000008).
Who can help me? thks.
fishwood said:
I installed a update.zip(Acer_AV043_A701_0.006.00_WW_GEN1.zip).
then,My A701 restarted, but it's stuck at the ACER logo.
I hook up this device to the PC ,but not go to fastboot mode , "MTB drivers" is no found.
I pressed the "volume up"- and the "power"-button at the same time, released the power-button when the screen turns on and switched the lock switch on and off and on and off: top left corner of the screen says "Erasing Userdata... Unrecoverable bootloader error (0x19000008).
Who can help me? thks.
Click to expand...
Click to collapse
Unfortunately, as the 701 is new, there are not a lot of options at this time.
You can try downloading a full stock rom, renaming it to "update.zip", copy it to SD card, and boot your tab holding Vol + and PWR.
See it it installs the rom. You may have to try a couple. Hopefully 1 will work.
I am going to assume the update really wasn't meant for your version (WW_COM_GEN1 build) ?
Other than that, we do not have a service rom (EUU) available for the 701.
The only other option would be Acer Repair.
MD
thank a lot.
Hi Fishwood,
To get into a workable bootloader mode, try this:
Power button and volume DOWN at the same time, while flicking rotation lock on and off
When the tablet vibrates, let go of the power button, but KEEP pressing volume down and KEEP flicking rotation lock
The tablet should get to the bootloader.
Earlier I managed to put my tablet into an unusable state, but this method got me to the bootloader and I was able to continue working.
I'll tell you what I did, but I do not recommend this particular course of action - there is a chance you will completely ruin your tablet. Moscow Desire has warned in no uncertain terms to stay away from Clockwork Mod Recovery and I trust his judgement. I chose to go against his advice to do the following, but I was fully aware that I was running the risk of bricking my tablet.
I checked that the tablet was rooted
I installed CWM 6.0.1.1
I wiped the cache, wiped the user data (factory reset) and wiped the Dalvik
I then installed a stock ROM from the SD card
I then carried on messing around in the way I have been for a few days now.
If you are interested in doing this, I can provide the links for the various posts that I got my information/downloads from.
Seriously though, you do this at your own risk. If you're not sure about what you're doing, or you're not prepared to accept that you might brick your tablet, it's better to follow an alternative course of action.
misteral1970 said:
Hi Fishwood,
To get into a workable bootloader mode, try this:
Power button and volume DOWN at the same time, while flicking rotation lock on and off
When the tablet vibrates, let go of the power button, but KEEP pressing volume down and KEEP flicking rotation lock
The tablet should get to the bootloader.
Earlier I managed to put my tablet into an unusable state, but this method got me to the bootloader and I was able to continue working.
I'll tell you what I did, but I do not recommend this particular course of action - there is a chance you will completely ruin your tablet. Moscow Desire has warned in no uncertain terms to stay away from Clockwork Mod Recovery and I trust his judgement. I chose to go against his advice to do the following, but I was fully aware that I was running the risk of bricking my tablet.
I checked that the tablet was rooted
I installed CWM 6.0.1.1
I wiped the cache, wiped the user data (factory reset) and wiped the Dalvik
I then installed a stock ROM from the SD card
I then carried on messing around in the way I have been for a few days now.
If you are interested in doing this, I can provide the links for the various posts that I got my information/downloads from.
Seriously though, you do this at your own risk. If you're not sure about what you're doing, or you're not prepared to accept that you might brick your tablet, it's better to follow an alternative course of action.
Click to expand...
Click to collapse
thks.
Pls give me the all links.
thank you so much!
I checked that the tablet was rooted I do
I installed CWM 6.0.1.1 I do
I wiped the cache, wiped the user data (factory reset) and wiped the Dalvik I do,but "Error mounting /data!"
Pls help me!

[A700] Bricked into "Boot image verified failed"

Unfortunately, I've bricked my Acer Tablet after trying to flash this ROM http://forum.xda-developers.com/showthread.php?t=1994294
The installscript finished the flash successfully, but after reboot, the bootloader only shows the message "Boot image verified failed" No booting and no CWM Recovery is available no more. I've tried several times to get into the fastboot mode with pressing the Power Button and Volume Button with the two knobs, but nothing helps. Neither switching the screenlock switch on and off. I figured out by trying, how to get into APX mode, but I don't know, if and how that could help me, solving my problem :/
Before I've tried to flash the ROM, I had CM10 with the Stock Bootloader in Unlocked Mode and CWM 6.0.2.3 Touch installed, but the Aroma Installer seems to have destroyed the CWM and locked my Bootloader again. Is there any way to unbrick the tablet now? Any help would be appreciated
V4lk0 said:
Unfortunately, I've bricked my Acer Tablet after trying to flash this ROM http://forum.xda-developers.com/showthread.php?t=1994294
The installscript finished the flash successfully, but after reboot, the bootloader only shows the message "Boot image verified failed" No booting and no CWM Recovery is available no more. I've tried several times to get into the fastboot mode with pressing the Power Button and Volume Button with the two knobs, but nothing helps. Neither switching the screenlock switch on and off. I figured out by trying, how to get into APX mode, but I don't know, if and how that could help me, solving my problem :/
Before I've tried to flash the ROM, I had CM10 with the Stock Bootloader in Unlocked Mode and CWM 6.0.2.3 Touch installed, but the Aroma Installer seems to have destroyed the CWM and locked my Bootloader again. Is there any way to unbrick the tablet now? Any help would be appreciated
Click to expand...
Click to collapse
Just let the battery run dry. Then let it boot up normally without pressing any buttons when the battery runs out by connecting it to your charger. Hope it works!
Thanks for the reply. I tried that, but nothing happens, just the indicator LED on the power button turns on orange. The tablet does not boot on itself, if I connect the charger. I have to press the power button, but this results again in "Boot image verified failed"
Edit: Update. I figured out how to get into fastboot. I read something on google, with switching the screenlock switch on and off. That doesnt worked for me: The thing was, to hold the power button AND the volume button with the two knobs, then the tablet starts, to release the power button and THEN, while still HOLDING the volume button pressed, to switch on and off the screenlock button. Then the bootloader starts into fastboot mode, going into androidsdk and typed in cmd "fastboot oem unlock" solved the problem. The ROM starts and everything is fine
Why you don't write into the mentioned thread? There seems to come the issues from then ask there, sorry can't understand why opening new thread instead asking there.
Also the first time heard sucha thing, I also change the rooms from cm10 to Jacobus, back to stock, on cool one and to cm and back, to test everything and try something out.
Never had issues buy this ways
Gesendet von meinem GT-N7000 mit Tapatalk 2
I don't have the right to post in the proper thread, so I opened up a new one.
In order to install a JB based ROM, you need the JB compatible CWM. The version of CWM you used is apparently for ICS, so I am a little surprised it worked to install CM10. Where did this 6.0.2.3 come from? Use 6.0.1.5 from pawitp. I've used it and swapped/flashed ROMs at least ten times. Never encountered that issue (or any issue). As a matter of fact, I would just run Vorbeth's EasyRoot as it does all the grunt work for you. I've used it twice and it worked flawlessly.
It is just too late... bad luck for me today, I fullbricked the tablet, after performing a restore with CWM 6.0.1.4. Not bootloader, nothing. Just APX Mode.
V4lk0 said:
It is just too late... bad luck for me today, I fullbricked the tablet, after performing a restore with CWM 6.0.1.4. Not bootloader, nothing. Just APX Mode.
Click to expand...
Click to collapse
Hi I had the same issue after flashing from CM10.1 to CoolOne. However I fixed it by unlocking the bootloader => reinstalling recovery => flashing CM 10.1 back.
Did you have any luck recovering from APX?
Gullinbursti said:
Did you have any luck recovering from APX?
Click to expand...
Click to collapse
No, unfortunately not. I gave my tablet 2 weeks ago to the acer repair service and got it back today. The support said, that they have changed the mainboard and flashed the latest android on the tablet, but they did that on guarantee, so I didn't had to pay something ^^ Now it is running Android 4.1.1 Stock ROM from Acer.
Exact same problem
I am having the exact same problem. I am able to boot into recovery mode but then I get the android laying down with with the red triangle, question mark. My bootloader is unlocked but aftrer the update my screen is stucked on the ICONIA TAB startup screen.

[Q] Flashed stock root rom, phone just sits at 4GLTE screen

Hey guys,
I am totally freaking out because I was trying to flash my phone back to a somewhat stock position to erase it and just sort of get back to a stock place and then start flashing again. I tried keeping all the different instructions straight and I think I got turned around someplace.
This is where I am at for what is going on:
Flashed the VRALEC bootchain after I flashed the Stock rooted rom root66_VZW_I535VRBMB1.tar.md5.
The phone currently is accessible for the Odin download mode and when it boots I show the Samsung logo with the lock logo that is unlocked. I am totally not sure where to go from here and need some serious help with what to do next. The phone seems to be simply stock at booting on the 4Glte screen with the Verizon logo.
Any help would be very much appreciated as I am so mixed up as to what to do I don't know where to go and I don't want to make matters worse.
:crying:
NeCr0mStR said:
Hey guys,
I am totally freaking out because I was trying to flash my phone back to a somewhat stock position to erase it and just sort of get back to a stock place and then start flashing again. I tried keeping all the different instructions straight and I think I got turned around someplace.
This is where I am at for what is going on:
Flashed the VRALEC bootchain after I flashed the Stock rooted rom root66_VZW_I535VRBMB1.tar.md5.
The phone currently is accessible for the Odin download mode and when it boots I show the Samsung logo with the lock logo that is unlocked. I am totally not sure where to go from here and need some serious help with what to do next. The phone seems to be simply stock at booting on the 4Glte screen with the Verizon logo.
Any help would be very much appreciated as I am so mixed up as to what to do I don't know where to go and I don't want to make matters worse.
:crying:
Click to expand...
Click to collapse
Pull the battery, boot into recovery (hold volume Up, power, and home), then do a Factory reset.
SlimSnoopOS said:
Pull the battery, boot into recovery (hold volume Up, power, and home), then do a Factory reset.
Click to expand...
Click to collapse
Booting into recovery gives me some message about unauthorized software as I had tried that. I was trying this method but the VRALF bootchain was showing as invalid. I just found a copy of it on invisiblek's site and flashed that and was going to continue with that method trying to get this working. I will update once that has gone through as the stock.vzw_root66.tar image is flashing now. Wish me luck!
Ok, so this time when it finished flashing it rebooted, then it showed the android with the spinning hexagon type thing that you would see when doing a rom backup or something of the sort. I pulled the battery rebooted and did a factory reset along with wiping cache directory and now I am waiting at the 4Glte screen again... Keeping fingers crossed and hoping this works.
AND OMG AWESOME!!!!!
Man, now it is time to get back to flashing. Thank you so much SlimSnoopOS for that last thing I was missing, I really appreciate it.

Stuck at Boot Logo After Flashing Firmware via ODIN

Nevermind fixed it. I am a dumbass lol I booted into stock recovery and factory reset, and now I am good to go.
Silicon Knight said:
Nevermind fixed it. I am a dumbass lol I booted into stock recovery and factory reset, and now I am good to go.
Click to expand...
Click to collapse
this happens buddy you just have to boot into recovery and do a factory reset and wipe cache and there will be no problem
HAPPY NEW YEAR
So I had the same issue it sounds like, tried to flash PhilZ recovery over Odin seemed fine I put the PhilZ file and superSU files on the device to continue through and now I am unable to get into recovery mode only download and my tab does not turn off, it sits on the Samsung Galaxy Tab 2 10.1 logo unless I hold the power then it turns off and then right back on again.
Any ideas? I cant seem to find anything
Does your device boot up completely or just sit at the Samsung bootscreen?
swrght13 said:
Does your device boot up completely or just sit at the Samsung bootscreen?
Click to expand...
Click to collapse
Just the boot screen, not even past the first logo
You must have missed a step. Try the process again using this video tutorial: http://www.youtube.com/watch?v=sO3y7JCqfc8
Follow the directions step by step.
This is actually the video I was using, but, I have tried again and I cant get it to boot into PhilZ. I am able to get to download screen so I have tried a different version as well, but after it gets the pass it disconnects to reboot and then never boots or reconnects until I put it into download and reconnect the device.
Weird. This is the way I installed Phil's touch. I had no issue with it. Make sure your usb is disconnected from your device before rebooting. On the p5113, to get into recovery, hold down power + volume-down, when you see first Samsung big-screen, release power button and continue to hold the volume-down button.
Sent from my GT-P5113 using XDA Premium 4 mobile app
That's what I've been doing and it does nothing. Device sits at that Samsung Galaxy Tab 2 10.1 screen. The only way I can turn it off is to plug it into my computer and restart it until the battery symbol comes up and disconnect. That's it.
Not sure what route to take now, but, it still connects to odin and after flashing the PDA to it, it disconnects.
Ok. Tell me. Are you rooted? Can you boot up to your home screen at all? You must be rooted in order to flash a custom recovery.
Sent from my P5113 using XDA Premium 4 app
Rooted, running CM 10.2 [4.3.1]
I didn't even get to that step, I was flashing philz recovery in order to backup before rooting. I was unable to boot anything except the download mode, no recovery mode to factory reset and not able to boot the actual system at all.
I ended up trying CWM and flashing that to the device through Odin and was able to open recovery mode after that and have since flashed Cyanogen to the device and have everything good to go.
I dont know what was wrong with philz, but, I tried multiple downloads of the version we need and none did anything.
Problem is solved, but, there's got to be something wrong with philz recovery for this device or my tablet just doesn't like philz.
Thanks for your suggestions though I appreciate your efforts!
No problem. I'm glad you found a way to fix it!

Samsung S6 Boot Loop

Hi,
Apologies if this has been asked before, but I've done a relatively thorough search and I can't find a solution to this problem.
I have an S6 (SM-G920F), It was playing up for a few weeks before this, not charging well, and what not, thought it was a cable/hardware issue. Then it stopped working entirely. Initially when it was plugged into the wall it would say it was 91% charged, but if you tried to turn it on it would turn off, and reboot into the charging screen.
I've done quite alot of reading and I've ended up flashing it with Odin (I have a single .md5 file, which i've loaded onto the phone via AP) using the most recent FIrmware UK EE for the SM-G20F. This was successful, however now it only loads the Black screen with white text Samsung S6 powered by android screen and then goes blank and back to the white text screen.
I downloaded an alternative firmware (the one previous version), but this has had the same effect. I've tried to repartition with odin, but this fails.
1.) Is there anyway I can fix this?
2.) If not Is there anyway to remove files whilst in downlod mode?
3.) If I cannot fix it or recover my data, is there anyway to wipe the data securely from my phone so I can sell it for parts?
At present, I can't access recovery mode, only download mode. But whilst Odin communicates with the phone in download mode, I can't seem to access my files from explorer?
1. I would say you'd have to clear cache, immediately after flashing the firmware with Odin, but to do that, you'd have to get to Recovery Mode first...
Why can't you get to it? Does it just start trying to boot nornally? Because if so, it's just a matter of timing it. What I do is... hold power+home+voldown to get to the screen that asks me if I want to get into Download Mode, I press cancel, and immediately start holding power+home+volup until I see the bootsplash screen, and release the power button but keep holding home+volup, and it gets me to Recovery every time, even when I have difficulties such as this.
2. Not that I'm aware of. BUT you could flash TWRP with Odin, and if you then can manage to get to Recovery, you just need to plug your phone into a computer, and your phone will show up in the computer as a device/disk and you can freely remove stuff from it.
If... IF this were to work, I would suggest downloading a stock-based ROM and flashing it. It's far more likely to work properly and bootup without issue than the firmwares you can get, and it's far less much of a headache to do.
3. Nope. There are apps that can wipe data securely (such as Shreddit which does it according to military standards), but it can't be done from Download Mode. There may be some script that could do it in Recovery Mode, but I doubt it.
I mean... technically... you could flash TWRP, go to Recovery, move to your PC all the stuff you want to keep, select the wipe option in TWRP and then transfer randomly generated data from your PC to your phone until it's full - there are many apps that can generate such data. It's not something you could pass off as very very secure, but it should suffice.
I seem to always keep going to trying TWRP - so, you know, give it a shot.
King-V said:
1. I would say you'd have to clear cache, immediately after flashing the firmware with Odin, but to do that, you'd have to get to Recovery Mode first...
Why can't you get to it? Does it just start trying to boot nornally? Because if so, it's just a matter of timing it. What I do is... hold power+home+voldown to get to the screen that asks me if I want to get into Download Mode, I press cancel, and immediately start holding power+home+volup until I see the bootsplash screen, and release the power button but keep holding home+volup, and it gets me to Recovery every time, even when I have difficulties such as this.
2. Not that I'm aware of. BUT you could flash TWRP with Odin, and if you then can manage to get to Recovery, you just need to plug your phone into a computer, and your phone will show up in the computer as a device/disk and you can freely remove stuff from it.
If... IF this were to work, I would suggest downloading a stock-based ROM and flashing it. It's far more likely to work properly and bootup without issue than the firmwares you can get, and it's far less much of a headache to do.
3. Nope. There are apps that can wipe data securely (such as Shreddit which does it according to military standards), but it can't be done from Download Mode. There may be some script that could do it in Recovery Mode, but I doubt it.
I mean... technically... you could flash TWRP, go to Recovery, move to your PC all the stuff you want to keep, select the wipe option in TWRP and then transfer randomly generated data from your PC to your phone until it's full - there are many apps that can generate such data. It's not something you could pass off as very very secure, but it should suffice.
I seem to always keep going to trying TWRP - so, you know, give it a shot.
Click to expand...
Click to collapse
Thanks for your reply! So after flashing it goes straight back into the boot loop. Weirdly if its plugged into my laptop it spend about a second or two on the "Samsung Galaxy S6: Powered by Android" screen before plunging into darkness and shortly after repeating the same message. However if I plug it into the wall it spend over twice as long on that screen before repeating the cycle. It never goes any further.
I've tried your suggestion about perhaps its timing for recovery mode, but even if I go straight from cancelling download mode to trying the power, up and home key it doesn't go to recovery. I've tried a variety of timings both plugged into my laptop and plugged into the wall to no avail. If the phone isn't plugged in, it literally won't do anything whatsoever, won't even hint at turning on.
So Next I tried flashing it with TWRP via Odin and nothings changed, exactly the same bootloop and I still can't get into recovery mode.
I'm starting to think that sadly this phone my be beyond repair! Thanks for your help though, much appreciated.
Hi! I usually run out of my bootloops like this:
try this:
1: go to download mode, and press Power + home + volume —
2: As soon as the screen turns black, continue pressing Power and home, quickly release "volume —" and press "volume +". This will get you into recovery mode.
It always worked for me, so I wish the same for you. Good luck! (And sorry for my bad english)
vinicius_guerra said:
Hi! I usually run out of my bootloops like this:
try this:
1: go to download mode, and press Power + home + volume —
2: As soon as the screen turns black, continue pressing Power and home, quickly release "volume —" and press "volume +". This will get you into recovery mode.
It always worked for me, so I wish the same for you. Good luck! (And sorry for my bad english)
Click to expand...
Click to collapse
Hi Vinicius,
Thanks for the suggestion. Unfortunately it didn't work, I even tried flashing it back to a standard ROM from TWRP, but it still didn't do anything, just back to the Samsung logo and the loop continues ever more!
Hi, I have this problem as well.
Originally I had TWRP and root flashed into my phone but for reasons I needed to remove root.
So I followed the Odin route stated here "Mobikin how to remove root from android" (I can't post links but this should be the top result when googling)
However I didn't know if the recovery/boot should have went into AP or BL on the Odin menu and googling didn't give me any answers so I may have tried both....
Right now I tried flashing TWRP and I can't seem to boot into TWRP as well.
I was able to get into recovery mode but clearing data/cache didn't fix it for me.
EDIT: I managed to flash in another stock rom and it boots into the SAMSUNG logo but gets stuck there. I already went into recovery mode to delete data and cache partition but it still doesn't boot.
Melioetta Zyguard said:
Hi, I have this problem as well.
Originally I had TWRP and root flashed into my phone but for reasons I needed to remove root.
So I followed the Odin route stated here "Mobikin how to remove root from android" (I can't post links but this should be the top result when googling)
However I didn't know if the recovery/boot should have went into AP or BL on the Odin menu and googling didn't give me any answers so I may have tried both....
Right now I tried flashing TWRP and I can't seem to boot into TWRP as well.
I was able to get into recovery mode but clearing data/cache didn't fix it for me.
EDIT: I managed to flash in another stock rom and it boots into the SAMSUNG logo but gets stuck there. I already went into recovery mode to delete data and cache partition but it still doesn't boot.
Click to expand...
Click to collapse
Same experience. For all those 6 years that I used this device, the wifi was okay until now. It (wifi) is very buggy (turning on and off, and sometimes won't turn on at all) so I restarted the device, then bootloop happens. I flashed the stock rom via odin and clear data and cache. But it is still bootlooping. I think this is the sign that I need to replace my phone IF I couldn't find a fix to this.

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