My S8 phone is on a bootloop after flashing TWRP via Odin. I REALLY NEED HELP PLEASE - Samsung Galaxy S8 Questions and Answers

Hey, I'm really new to this stuff. So I was trying to root my phone but then I forgot to backup my files after flashing TWRP via Odin (I have really important and precious stuff in my phone) so I tried rebooting so I can make the backup but my phone isn't able to even access the home screen because of the bootloop. I'm really going to need my phone tomorrow so I'm not feeling that good right now, I'm feeling a bit anguished and regretful for even doing this. I don't mind uninstalling TWRP to fix this. Do I have to replace my official Oreo OS with a non official customized one? Because I've heard that customized OS tends to be slower (I'm really new to this so i don't know that much stuff) Please help me, I'm legit panicking. I just want to be able to reach my home screen without wiping, deleting or formatting data I don't want to lose all my stuff on my phone.
Thank you to whoever reads this and helps me

Hi,
Can you boot TWRP recovery? If yes, then in all probability you should be able to access data and copy that over to PC.

Related

P9 Lite booting lock

Hi all, i'm new to Android Phones, so i started a few days with this phone. But now i think i've done a big mistake, i tried to erase everything from the phone, in a hope to "restore" to the factory state. Instead, i think i've deleted everything from the phone, and now, it only says "Your device is booting now..." and it doesn't boot. It's unlocked and rooted, i've deleted it from the TWRP menu.
So, is there anything that i can do, to restore it back? The model i think it's the VNS-L31, i'm downloading a firmware from the L21, can it be replaced or something like that? Thankx in advance.
*Edit* I found stock rom for my phone here in the fórum, but it says i need to have stock recovery but i have the TWRP recovery. Is there any way that i can do it, with that recovery?
*Edit 2* In Erecovery, when i try to download it says "Getting package info failed"
First of all... Why don't you have a backup in TWRP? ALWAYS back up your stuff before doing ANYTHING in TWRP.
Second: there is an option for factory reset within the EMUI system itself. Absolutely no need to mess around in TWRP for something like that. Of course you can "factory reset" in TWRP but this can also wipe your system which then requires you to flash something.
To your problem:
Since I luckily was not forced to flash a stock firmware yet, some more information would be nice.
In which format does the firmware come (link to where you downloaded it)? TWRP can handle .zip files. So if it comes as a .zip file, you can try flashing it through TWRP (really depends on what you downloaded!)
If you only need stock recovery, try accessing TWRP with your phone plugged into a PC.
This way it normally fires up the stock eRecovery.
Hi, yeah, i should have done a backup, thank you for the advice. The firmware i used is this one www .stechguide.com/huawei-p9-lite-marshmallow-firmware-b100/ - i found it here, and a user used it to, not sure why, but he says that it worked.
I'm not sure if this is the right way to do it, because i'm new to this. The TWRP boot, but i can't get my phone to get recognized by the huawei software, not sure if it need to. Even with the drivers installed, it only connects if the phone is on the menu.
iDeadSmack said:
Hi, yeah, i should have done a backup, thank you for the advice. The firmware i used is this one www .stechguide.com/huawei-p9-lite-marshmallow-firmware-b100/ - i found it here, and a user used it to, not sure why, but he says that it worked.
I'm not sure if this is the right way to do it, because i'm new to this. The TWRP boot, but i can't get my phone to get recognized by the huawei software, not sure if it need to. Even with the drivers installed, it only connects if the phone is on the menu.
Click to expand...
Click to collapse
Hmm maybe best way is to send the user that made it work a PM and maybe he can provide you a guide on how to do it.
And maybe he or you can then provide a guide here on how to do it.
This device is rather new and the forum is building up so there is a lot of work to do and a lot of things have to be worked around.
Hope you can fix it, like I said, I cannot really help you properly since I never had the problem and therefore do not really understand what's happening on your device.
hi, thank you for the reply. In fact i have solved the problem few minutes ago, and was thinking on do a quick fix tutorial or something like that. Because it's really fast, just need to do the right way.
I'm really happy for the help i got in this forum, all the threads are really intersting. Going to try help others with the same problem that i had. Thank You
iDeadSmack said:
hi, thank you for the reply. In fact i have solved the problem few minutes ago, and was thinking on do a quick fix tutorial or something like that. Because it's really fast, just need to do the right way.
I'm really happy for the help i got in this forum, all the threads are really intersting. Going to try help others with the same problem that i had. Thank You
Click to expand...
Click to collapse
Could you help me with this problem i have the same problem on Huawei l-21 ??
Always have a backup of your fresh system on TWRP. Then whatever happen just restore it whenever you think you messed up your device and you should be fine ALWAYS.

SM-T280 I've made a huge mistake

I installed TWRP and tried to flash SuperSU according to the guide by ashyx here: https://forum.xda-developers.com/showthread.php?t=3475381
So, from what I can tell by reading this thread: https://forum.xda-developers.com/galaxy-tab-a/help/samsung-galaxy-tab-10-1-mount-data-t3544561, the problem is that my device was encrypted. I tried restoring the full image that I made using TWRP, before trying to flash the boot. Stuck on Samsung logo now. I should have seen this coming when I was getting "failed to mount /data" errors.
So I suppose I need to flash that zip https://www.androidfilehost.com/?fid=24591000424951049, but I thought I better ask specifically about my device and situation before blindly flashing yet another zip.
What steps do I need to take now?
thanx
update :: it sounds like my last resort option is to flash the stock ROM (can I do this in Odin?)
BUT I noticed that SuperSU saved a "stock_boot_*.img.gz" file, which I copied to SD root and also to my PC. Now I imagine that if I flash this, I might be able to regain access to the OS... that would be the best at this time. Then I can do more research and try root again later.
Is this true, and how should I flash the stock_root file?
I absolutely love doing research and answering my own questions! no sarcasm. after reading a whole bunch of general info about the Android system, partitions, boot process, TWRP... I forged ahead with 90% confidence, unpacking the "stock_boot_*.img.gz" and feeling for a way to flash it with TWRP... and more importantly, with 99.9% confidence that it won't wreck anything if I try.
So next time, I will first decrypt the system before trying to root, and pay attention to the log output, and only proceed when confident that I know what's happening next... this is all basic IT procedure. I should know this! Guess I was in a rush to get root. Still in a rush in a way tho.... want to recover deleted photos and can't do it without root. Anybody know if Android device encryption is proper full-disk? Like if the empty space will be decrypted just the same?
trefrog said:
I absolutely love doing research and answering my own questions! no sarcasm. after reading a whole bunch of general info about the Android system, partitions, boot process, TWRP... I forged ahead with 90% confidence, unpacking the "stock_boot_*.img.gz" and feeling for a way to flash it with TWRP... and more importantly, with 99.9% confidence that it won't wreck anything if I try.
So next time, I will first decrypt the system before trying to root, and pay attention to the log output, and only proceed when confident that I know what's happening next... this is all basic IT procedure. I should know this! Guess I was in a rush to get root. Still in a rush in a way tho.... want to recover deleted photos and can't do it without root. Anybody know if Android device encryption is proper full-disk? Like if the empty space will be decrypted just the same?
Click to expand...
Click to collapse
It doesn't really decrypt it, it does a full format using either no encryption or new encryption. I'm sorry, but the files are gone. To answer your question though, I believe the encryption is full-disk.
Going forward, check out TitaniumMediaSync. You can mirror your internal storage to a computer via FTP, so when these things happen (and they do happen), you won't lose anything. I'm sorry you lost your files in this.
actually I didn't lose my files! I was able to restore the backed up boot partition that twrp made and tucked into a folder.
happy af :laugh:
... so are you saying that the decrypt function in the Android settings just wipes everything? Then why is it even there, if it's basically a factory reset?
hmm associated with Titanium Backup? I have a license for that, and as soon as I root this, I'll be installing it. Currently, all my important stuff (just photos), are backed up to my PC via QuicPic's cloud backup feature.
I think i have found myself in the same situation as you. I dont have any files or data to lose. managed to do first step in using odin to install twrp. tried to follow additional steps of installing super su, then padded boot. now the tablet wont load past the first screen. I can still get into twrp. how can i get this fixed, rooted and a custom image installed? any help in the right direction would be appreciated.
find that "stock_boot_*.img.gz" using the twrp file browser thing. copy it to the root of your SD for safe keeping (even if the SD is encrypted, it seems that it does so only at the file level, rather than partition/disk level, so it will be written unencrypted). if ur plugged to PC, you can copy it across for even safer keeping
then... I don't recall how I found it, but it's in twrp. a way to flash that file. worked for me, because as far as I made it, only the boot partition was affected

[Help] Rig transfer + revert to complete stock

Hi,
First thing is first, I've rooted and rommed before, and I am using an S7E G935W8. Well, two of them... You'll see.
I am planning to basically copy the OS and configuration from one S7 to the other. I am 100% this is possible, using TWRP and its "backup" and "restore" functions, provided they're the exact same phone, which they are. There's only one thing I would like to do which I can't find information on. After the big transfer, before booting back into the OS, I would like to restore the stock recovery, to preserve software update capability. No I am NOT rooted nor am I planning on rooting this current OS, I'm waiting for Samsung to purposefully stop supporting this phone, which is probably gonna be Oreo. I digress, I know how to transfer the rigs. Now I would like to know how to restore the stock recovery and possibly, if it's possible, reset the KNOX bit. I probably can't do that last one, but the most important part is keeping OTA update functionality.
I hope someone can help, and thanks in advance to all who can.

How do I fix a bootloop?

The phone is a Moto g7, Verizon river xt1962-1, rooted with Magisk and TWRP.
I wanted to update to Magisk 19.4, so I made a TWRP backup and ran the unroot patch and went back to 19.3, but I still had the problem, so I decided to restore from the backup. After the backup, I am stuck in a bootloop, the whole "Your device is unlocked and cannot be trusted" screen over and over. I can get into TWRP, but no backup that I have tried will fix the boot loop. I tried a few things that just seemed obvious to me, clearing the cache and whatnot, but I am still stuck. I have adb and fastboot at the ready, but I don't know where to go from here.
I do not even know what build I am running, I cannot get into System / About to see, and I am not savvy enough to know any other way to find out. I know that it was current stock, missing only the most recent patches.
Is there a way that I can restore my phone? I would be grateful for any help. Damn, I love this g7 so much more than the Note phones that I had been using for years, but I was at least a little familiar with them. Thanks for any help.
Sounds like you'll need to fastboot flash a stock rom to your phone, use TWRP to get into the bootloader/fastboot mode, and also sounds like you messed up the boot.img when you were trying to go through that process. I just updated the Magisk app from within the app itself - no issues there. Might be a good time to update to a newer stock rom as well, might as well take advantage of the situation amirite?
But just for different options, here may be some useful links
Keep in mind, I haven't used either one of the methods in either links and I am not responsible for anything that occurs from your actions.
idk about this one but looks like it may help
https://forum.xda-developers.com/moto-g7/how-to/how-to-fix-g7-xt1962-1-stuck-bootloader-t3917792
this next one has the flashboot commands you'd need to also update your ROM
https://forum.xda-developers.com/moto-g7/how-to/moto-g7-xt1962-1-riverretail9-0ppos29-t3969067
Keep in mind, I haven't used either one of the methods in either links and I am not responsible for anything that occurs from your actions.
Anyways, good luck!
SmilingPerson said:
The phone is a Moto g7, Verizon river xt1962-1, rooted with Magisk and TWRP.
I wanted to update to Magisk 19.4, so I made a TWRP backup and ran the unroot patch and went back to 19.3, but I still had the problem, so I decided to restore from the backup. After the backup, I am stuck in a bootloop, the whole "Your device is unlocked and cannot be trusted" screen over and over. I can get into TWRP, but no backup that I have tried will fix the boot loop. I tried a few things that just seemed obvious to me, clearing the cache and whatnot, but I am still stuck. I have adb and fastboot at the ready, but I don't know where to go from here.
I do not even know what build I am running, I cannot get into System / About to see, and I am not savvy enough to know any other way to find out. I know that it was current stock, missing only the most recent patches.
Is there a way that I can restore my phone? I would be grateful for any help. Damn, I love this g7 so much more than the Note phones that I had been using for years, but I was at least a little familiar with them. Thanks for any help.
Click to expand...
Click to collapse
Try to flash the stock boot.img and you'll be fine. If you haven't got a stock boot.img you will find a backup of it in your /data partition (magisk does a backup of it by default). Just unpack the TWRP backup of your /data or download the latest firmware to get a boot.img
WoKoschekk said:
Try to flash the stock boot.img and you'll be fine. If you haven't got a stock boot.img you will find a backup of it in your /data partition (magisk does a backup of it by default). Just unpack the TWRP backup of your /data or download the latest firmware to get a boot.img
Click to expand...
Click to collapse
Mate, I can't thank you enough, now I am back up.
I took advantage of the oppotunity to do a Titanium backup and flash the latest firmware, since I was still running old security updates.
I am not sure why the TWRP backups caused a bootloop, that concerns me. I am diligent about making one before any significant change, and now I see that none of them were good. It might be that the backup I applied included boot, and somehow that caused an issue.
In any case though, thanks a million. I would PM you a beer, but they tend to go flat when they hit the first ATM gateway. Hops and TCP encapsulation don't seem to be compatible, especially at > 9600 baud ?
zenful said:
Sounds like you'll need to fastboot flash a stock rom to your phone, use TWRP to get into the bootloader/fastboot mode, and also sounds like you messed up the boot.img when you were trying to go through that process. I just updated the Magisk app from within the app itself - no issues there. Might be a good time to update to a newer stock rom as well, might as well take advantage of the situation amirite?
But just for different options, here may be some useful links
Keep in mind, I haven't used either one of the methods in either links and I am not responsible for anything that occurs from your actions.
idk about this one but looks like it may help
https://forum.xda-developers.com/moto-g7/how-to/how-to-fix-g7-xt1962-1-stuck-bootloader-t3917792
this next one has the flashboot commands you'd need to also update your ROM
https://forum.xda-developers.com/moto-g7/how-to/moto-g7-xt1962-1-riverretail9-0ppos29-t3969067
Keep in mind, I haven't used either one of the methods in either links and I am not responsible for anything that occurs from your actions.
Anyways, good luck!
Click to expand...
Click to collapse
Thanks man, I really appreciate it! I did take advantage of the opportunity to update, something that had been bugging me for a while anyway.
I had updated Magisk to the beta through Manager, but a problem came up and I needed to step back to the stable version. That was where I messed up.
In a way though, it was just as well, since it forced me to spend a little time reading about the G7 ecosystem, something I really hadn't done much of yet. It used to be fun keeping up and flashing nightlies, etc, but over the past few years, it has got away from me. If it wasn't for a few specific things, I would almost stay stock. But I get uncomfortable thinking about the ridiculous amount of personal information a stock phone releases about us, so things like Signal and xPrivacylua are important to my sense of well being. Even if some of it is placebo.
zenful said:
Sounds like you'll need to fastboot flash a stock rom to your phone, use TWRP to get into the bootloader/fastboot mode, and also sounds like you messed up the boot.img when you were trying to go through that process. I just updated the Magisk app from within the app itself - no issues there. Might be a good time to update to a newer stock rom as well, might as well take advantage of the situation amirite?
But just for different options, here may be some useful links
Keep in mind, I haven't used either one of the methods in either links and I am not responsible for anything that occurs from your actions.
idk about this one but looks like it may help
https://forum.xda-developers.com/moto-g7/how-to/how-to-fix-g7-xt1962-1-stuck-bootloader-t3917792
this next one has the flashboot commands you'd need to also update your ROM
https://forum.xda-developers.com/moto-g7/how-to/moto-g7-xt1962-1-riverretail9-0ppos29-t3969067
Keep in mind, I haven't used either one of the methods in either links and I am not responsible for anything that occurs from your actions.
Anyways, good luck!
Click to expand...
Click to collapse
Thanks man, I really appreciate it! I did take advantage of the opportunity to update, something that had been bugging me for a while anyway.
I had updated Magisk to the beta through Manager, but a problem came up and I needed to step back to the stable version. That was where I messed up.
In a way though, it was just as well, since it forced me to spend a little time reading about the G7 ecosystem, something I really hadn't done much of yet. It used to be fun keeping up and flashing nightlies, etc, but over the past few years, it has got away from me. If it wasn't for a few specific things, I would almost stay stock. But I get uncomfortable thinking about the ridiculous amount of personal information a stock phone releases about us, so things like Signal and xPrivacylua are important to my sense of well being. Even if some of it is placebo.
SmilingPerson said:
Mate, I can't thank you enough, now I am back up.
I took advantage of the oppotunity to do a Titanium backup and flash the latest firmware, since I was still running old security updates.
I am not sure why the TWRP backups caused a bootloop, that concerns me. I am diligent about making one before any significant change, and now I see that none of them were good. It might be that the backup I applied included boot, and somehow that caused an issue.
In any case though, thanks a million. I would PM you a beer, but they tend to go flat when they hit the first ATM gateway. Hops and TCP encapsulation don't seem to be compatible, especially at > 9600 baud
Click to expand...
Click to collapse
I'm glad to hear that! Don't worry about the beer!
I had similar issues with my Moto g6+... Either the /data encryption or Magisk is the reason for a failed backup. Both can cause a bootloop. But it's always good to have a stock boot.img.
I'm reading this because of the same issue in a Moto G7 Power. I haven't been able to make it restore a backup at all of either stock or custom. Oh, it will restore it just won't boot. I think it has something to do with the A&B system slots. We use a TWRP that was made for system with A&B slots but then we flash a copy partition zip That I'm not sure what it does. Maybe I should take it apart and have a look. . Has anyone been able to restore a backup in the G7?
arkansawdave74 said:
I'm reading this because of the same issue in a Moto G7 Power. I haven't been able to make it restore a backup at all of either stock or custom. Oh, it will restore it just won't boot. I think it has something to do with the A&B system slots. We use a TWRP that was made for system with A&B slots but then we flash a copy partition zip That I'm not sure what it does. Maybe I should take it apart and have a look. . Has anyone been able to restore a backup in the G7?
Click to expand...
Click to collapse
Do a full restore of boot, system and data.
Is data...
...encrypted => Then format data (not wipe!!) and reboot into system. When you see the "Welcome Screen" turn off your device and boot into TWRP again. Restore data and it should be fine.
...unencrypted => Then format data and restore data (w/o reboot!!)

Pulling User Data in Recovery from a Galaxy S7 w/ Stock Everything

My phone suddenly had a momentary display malfunction (some of the text on the screen just turned into garbled pixels) and then entered into a boot loop. I didn't make any changes or updates to the phone recently. It no longer boots normally - just the Samsung logo and some of the Verizon logo animation, then it reboots and starts again. How do I pull my user data off (photos mainly) before trying a factory reset? The phone is totally stock. I haven't unlocked it, rooted it, or installed any custom recovery/ROM/bootloader/whatever. (I sound like I don't know what I'm talking about because I don't, haha.) The touchscreen is fully functional. I'm sure this has been covered here before, but I haven't found anything that totally explains how to do this in this particular situation, so I'd really appreciate any help anyone can provide.
The only time I can get the phone to show up under adb devices is when I boot it in recovery mode and select "Apply update from ADB". But it says "sideload" next to it in adb devices, and the push, pull, and shell commands return errors. I've read that this is normal. Wiping the cache partition didn't solve the boot loop problem.
If it helps, this is what the top of the recovery screen displays:
Android Recovery
Verizon/heroqltevzw/heroqltevzw
8.0.0/R16NW/G930VVRSBCTC1
user/release-keys
I'm no Android expert, clearly. I've heard it mentioned that I need to install a custom recovery in order for this to be possible. To be clear, I want to make sure I don't erase the user data before I have a chance to pull it off the phone. These are the questions that I still have after reading information elsewhere (some of which I'm just asking out of an abundance of caution):
Is it correct that I need to install a custom recovery before I can pull this data off the phone?
Do I need to have it unlocked/rooted/anything else in order to be able to install a custom recovery? Or is there anything else I should do before installing it?
Which custom recovery should I install?
Do I need a custom ROM, if that's a different thing?
Do I need a custom...bootloader, if that's also a different thing?
Should I use Odin or Samsung Smart Switch to install the custom recovery?
(Extra credit: Does it sound from my description of how the boot loop started that this phone has hardware problems and should be replaced ASAP?)
Thank you so much for any help you can provide! Any extra information beyond my questions will be very much appreciated, too, of course. You guys never cease to impress.
You have a B version bootloader like me, and so far no root/custom recovery has been made for our versions of bootloaders. If I were you, I would check if you had maybe like a previous backup, and if Google made an automatic backup of your apps and photos? If you didn't use a 3rd party backup, and if you don't want to wait, you might lose some files. I also think you might be able to flash a certain part of stock firmware to get your phone to boot again, but I'm not sure
Also, if you don't care about files that can't be get through automatic backups, might as well flash a whole stock firmware, which as far as I know, may be the easiest way to get out of one.
Please correct me if I'm wrong
Also to answer your bullet points:
1. I'm not sure if you need a custom recovery, but from my experience from a Verizon s5, that's probably a yes.
2. Since this is Verizon, you would need to unlock your bootloader in order to install a custom recovery, which in where I posted my first reply, the B version of the bootloader is still locked down without any known way to unlock it. You and me are stuck with this, as I also have the B version.
3. If the heavens line up and you somehow unlock the bootloader, try to flash a recovery Called TWRP under the name "Herolqte" (that's what I think). If that doesn't work, try to find one that works with the phone on XDA. If neither of those show up try to use another custom recovery like CWM.
4. If your trying to recover data on a phone, flashing a custom ROM is probably the last thing you want to do. A custom ROM is a modified version of Android, which may mean you'll have to format your device anyways so this is probably not what you want (even though it would be nice :[ )
5. As in post 2, all you would need to get a custom recovery is to unlock the bootloader. I'm not even sure if you CAN get a custom bootloader, as Odin won't even let me flash a stock bootloader to my phone that is the same exact Version >:[
6. You would need to use Odin if you were trying to flash something to your phone. Smart switch I think WOULD let you back up your device, but you would need to be on the home screen on your phone, which in turn, would probably need you to be out of that bootloop.
7. This is probably a software issue. If you don't care to much about the idea, try flashing some parts of a stock firmware. I was personally in a boot loop 2 days ago, but I flash a stock modem file (I think that was the second file slot from the bottom in Oden) and that got me out, but for some reason wiped my phone clean, and I'm not sure why.
Anyways. Goodluck in recovering your data. Also I'm not sure if a factory reset would even fix a boot loop
yaas
yaas

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