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[HELP]G920F XME bricked.

Hey guys,
I accidentally flashed the CF-autoroot for 5.0.2 (I forgot there is no root yet for 5.1.1) right after updating to 5.1.1. Now, I'm stuck on the Downloading screen with no access to recovery. When I tried flashing stock recovery(after converting from img to tar.md5) from the Stock tar.md5 it game a NAND Write Start FAIL. I can't flash the stock firmware (G920FXXU1AOCZ) either it gives me the same NAND error.
I have no idea what to do next. Any help will be appreciated. I'll probably head to a customer care center tomorrow if I can't figure this out by then. Please any and all ideas welcome.

ansh712 said:
Hey guys,
I accidentally flashed the CF-autoroot for 5.0.2 (I forgot there is no root yet for 5.1.1) right after updating to 5.1.1. Now, I'm stuck on the Downloading screen with no access to recovery. When I tried flashing stock recovery(after converting from img to tar.md5) from the Stock tar.md5 it game a NAND Write Start FAIL. I can't flash the stock firmware (G920FXXU1AOCZ) either it gives me the same NAND error.
I have no idea what to do next. Any help will be appreciated. I'll probably head to a customer care center tomorrow if I can't figure this out by then. Please any and all ideas welcome.
Click to expand...
Click to collapse
Download your stock firmware and flash using Odin.

maxal said:
Download your stock firmware and flash using Odin.
Click to expand...
Click to collapse
Doesn't work. It still gives me the same error. NAND Write FAIL.

ansh712 said:
Doesn't work. It still gives me the same error. NAND Write FAIL.
Click to expand...
Click to collapse
Are you using Odin 3.10.6?

Exit from Download mode by pressing and hold both volume up and down button + home button + power button for a few seconds. After this you will exit download mode. Once screen turns off press and hold volume down + home button + power button. This will bring you to menu prior to download mode. Restart odin. Connect your device to your PC. Press volume up. Reflash your 5.1.1. Don't make the same mistake twice.

I have this same problem, I can only access download mode I CANNOT get into recovery. May I ask where I can download the 5.1.1 software from? I flashed from smart switch but now I am bricked smart switch does not pick up the device. My S6 is the varient mentioned here. Please, please, please someone help with a link. Thank you.

mattlou said:
I have this same problem, I can only access download mode I CANNOT get into recovery. May I ask where I can download the 5.1.1 software from? I flashed from smart switch but now I am bricked smart switch does not pick up the device. My S6 is the varient mentioned here. Please, please, please someone help with a link. Thank you.
Click to expand...
Click to collapse
Same here looking for the G920FXXU1AOCZ 5.1.1 firmware. Can't find it anywhere.

roydok said:
Exit from Download mode by pressing and hold both volume up and down button + home button + power button for a few seconds. After this you will exit download mode. Once screen turns off press and hold volume down + home button + power button. This will bring you to menu prior to download mode. Restart odin. Connect your device to your PC. Press volume up. Reflash your 5.1.1. Don't make the same mistake twice.
Click to expand...
Click to collapse
There is no 5.1.1 firmware yet for G920FXXU1AOCZ. If you have a link or can upload one I'd be very grateful. Also I can flash any 5.1.1 G920FXXU1AOCZ firmware right?

From what country do come from or where you bought your S6?
---------- Post added at 08:04 AM ---------- Previous post was at 07:55 AM ----------
Based on the CSC (XME) you mentioned on your title you can try flashing this G920F 5.1.1 Malaysian ROM via Odin:
http://www.sammobile.com/firmwares/download/49468/G920FXXU2BOFO_G920FOLB2BOFF_XME/

I am in the UK and I bought it from O2

Here you go UK O2 5.1.1:
http://www.sammobile.com/firmwares/download/49735/G920FXXU2BOFJ_G920FTEF2BOF1_O2U/

I am in India bought it from Malaysia. My phone is XME-G920F. I was just able to flash another 5.1.1 ROM from another Asian region (XEF). Somehow that worked. Sadly now I have to fix region lock since I didnt make a call before leaving Malaysia.

Reflash using the Malaysian 5.1.1 posted above.

roydok said:
Reflash using the Malaysian 5.1.1 posted above.
Click to expand...
Click to collapse
Will that fix sim lock ?

Hi, I just recently got a UK S6. (SM-G920F) I'm not sure where to really begin other than when I go to try to enter download mode it goes to a screen that appears like the stock android recovery only everything is in Chinese I believe. (Yes I'm holding volume down, home button, and power button) But no download screen comes up. And I'm pretty sure its running a custom rom because of the boot animation when it powers up (says datuyo) and there's no option to download an ota update. All I'm trying to do is go back to fully stock (I'm in America on AT&T). Build number is KTU84P.G920FZCU1ANIF if that helps. Also below it it says "Custom build version" which is I9296.MHD.C.B-V3.0_0508. I"m not sure what this means, but that's my situation, ANY help would be appreciated.

djhixson88 said:
Hi, I just recently got a UK S6. (SM-G920F) I'm not sure where to really begin other than when I go to try to enter download mode it goes to a screen that appears like the stock android recovery only everything is in Chinese I believe. (Yes I'm holding volume down, home button, and power button) But no download screen comes up. And I'm pretty sure its running a custom rom because of the boot animation when it powers up (says datuyo) and there's no option to download an ota update. All I'm trying to do is go back to fully stock (I'm in America on AT&T). Build number is KTU84P.G920FZCU1ANIF if that helps. Also below it it says "Custom build version" which is I9296.MHD.C.B-V3.0_0508. I"m not sure what this means, but that's my situation, ANY help would be appreciated.
Click to expand...
Click to collapse
Sounds like you have a fake Chinese phone.

maxal said:
Sounds like you have a fake Chinese phone.
Click to expand...
Click to collapse
Yup, I do ha, downloaded phone info and checked.

ansh712 said:
Will that fix sim lock ?
Click to expand...
Click to collapse
One way to find out. Flash the Malaysian ROM.
---------- Post added at 10:28 AM ---------- Previous post was at 10:26 AM ----------
djhixson88 said:
Hi, I just recently got a UK S6. (SM-G920F) I'm not sure where to really begin other than when I go to try to enter download mode it goes to a screen that appears like the stock android recovery only everything is in Chinese I believe. (Yes I'm holding volume down, home button, and power button) But no download screen comes up. And I'm pretty sure its running a custom rom because of the boot animation when it powers up (says datuyo) and there's no option to download an ota update. All I'm trying to do is go back to fully stock (I'm in America on AT&T). Build number is KTU84P.G920FZCU1ANIF if that helps. Also below it it says "Custom build version" which is I9296.MHD.C.B-V3.0_0508. I"m not sure what this means, but that's my situation, ANY help would be appreciated.
Click to expand...
Click to collapse
Yup, might be a not so geniune S6...

roydok said:
One way to find out. Flash the Malaysian ROM.
Click to expand...
Click to collapse
I did flash the malaysian rom. Didn't fix it.

I'm all sorted now thank you. Just getting an annoying security notice every 5 minutes which is annoying.
Sent from my SM-G920F using Tapatalk

Need some wisdom

my s6 g920f was on 5.1.1 it was running fine after I updates to 6.0.1 came up with issue emergency calls only tried all sorts to fix it but with no luck asked some expert he told me that its the modem and flashing would fix it could anyone guide me in the right direction and help me resolve this issue my phone still says emergency call only thank you

huzi7868 said:
my s6 g920f was on 5.1.1 it was running fine after I updates to 6.0.1 came up with issue emergency calls only tried all sorts to fix it but with no luck asked some expert he told me that its the modem and flashing would fix it could anyone guide me in the right direction and help me resolve this issue my phone still says emergency call only thank you
Click to expand...
Click to collapse
You could try flashing stock 6.0.1 firmware doing the following:
1) Find your firmware here ( http://www.sammobile.com/firmwares/database/SM-G920F/) and download the correct one. (Extract to desktop after)
2) Download Odin 3.10.7 ( http://odindownload.com/ ) and open.
3) Click 'AP' and select the firmware you downloaded (May take a few minutes for it to load)
4) Turn phone off, put into download mode (Hold Volume down, Home button and Power button) and continue
5) Connect phone to laptop (while in download mode) and when it says 'Added' in Odin, click start.
Only solution I could think of to fixing your problem, remember to back up all data if you're going to flash.
Also clear cache before flashing firmware. (Phone off, hold volume up and power) and select the option, then go ahead and do your thing

emcardle660 said:
You could try flashing stock 6.0.1 firmware doing the following:
1) Find your firmware here ( http://www.sammobile.com/firmwares/database/SM-G920F/) and download the correct one. (Extract to desktop after)
2) Download Odin 3.10.7 ( http://odindownload.com/ ) and open.
3) Click 'AP' and select the firmware you downloaded (May take a few minutes for it to load)
4) Turn phone off, put into download mode (Hold Volume down, Home button and Power button) and continue
5) Connect phone to laptop (while in download mode) and when it says 'Added' in Odin, click start.
Only solution I could think of to fixing your problem, remember to back up all data if you're going to flash.
Also clear cache before flashing firmware. (Phone off, hold volume up and power) and select the option, then go ahead and do your thing
Click to expand...
Click to collapse
Hi I did what U mentioned I used this version full with pit
http://samfirm.net/threads/android-6-0-1-galaxy-s6-sm-g920f-g920fxxu3dpbg-btu-03-09-2016.62/

huzi7868 said:
Hi I did what U mentioned I used this version full with pit
http://samfirm.net/threads/android-6-0-1-galaxy-s6-sm-g920f-g920fxxu3dpbg-btu-03-09-2016.62/
Click to expand...
Click to collapse
I had to flash 6.0.1 for my UK unlocked phone and all went well, try the same firmware I used: (If your phone is UK and unlocked):
http://www.sammobile.com/firmwares/download/66426/G920FXXU3DPBG_G920FBTU3DPB1_BTU/, BUT without the pit file, when I messed my phone up, I downloaded the firmware only from this link, just one file, and flashed it without pit or anything else (and everything went perfect). Might be able to help you too, if not then I'm not sure what else to do
EDIT: Also, after flashing and everything is done, you MAY have to turn on using safe mode (only on first time), I had to as it wouldn't go past the samsung logo first time after flashing. Phone does NOT actually go into safe mode, but gets it to boot correctly (Not sure why, or how it worked after, but it did)

emcardle660 said:
I had to flash 6.0.1 for my UK unlocked phone and all went well, try the same firmware I used: (If your phone is UK and unlocked):
http://www.sammobile.com/firmwares/download/66426/G920FXXU3DPBG_G920FBTU3DPB1_BTU/, BUT without the pit file, when I messed my phone up, I downloaded the firmware only from this link, just one file, and flashed it without pit or anything else (and everything went perfect). Might be able to help you too, if not then I'm not sure what else to do
EDIT: Also, after flashing and everything is done, you MAY have to turn on using safe mode (only on first time), I had to as it wouldn't go past the samsung logo first time after flashing. Phone does NOT actually go into safe mode, but gets it to boot correctly (Not sure why, or how it worked after, but it did)
Click to expand...
Click to collapse
Thank you for that but now do I turn on safe mode

huzi7868 said:
Thank you for that but now do I turn on safe mode
Click to expand...
Click to collapse
Well if you've flashed and the firmware boots up fine, then just ignore the last part.
If not, and you get the same problem as me:
Make sure phone is off. turn on as normal (but while holding the volume down button until phone fully boots), do NOT hold the power button all the way though, just volume down

emcardle660 said:
Well if you've flashed and the firmware boots up fine, then just ignore the last part.
If not, and you get the same problem as me:
Make sure phone is off. turn on as normal (but while holding the volume down button until phone fully boots), do NOT hold the power button all the way though, just volume down
Click to expand...
Click to collapse
still the same bro not working says emergency calls only

Bricked my Mate 8 when trying to go from NXT-L29C636B180 to NXT-L29C636B211

Hello everybody,
I managed to brick my mate 8 as per the title, honestly thinking why did i even bother, that whole saying "If it ain't broke, don't fix it." applies here 100%.
So i have been in the NXT-L29C636B180 which i put with the dload method (original was C636B103) and since then everything was good, all except the video camera that is.
So i wanted to try to get to the nougat update (561?) but i read that you need the 211 first. As i couldn't find it i used the android app: firmware finder, and using the proxy method i told basically the system that a new update is up and download it - so this is the update option in the settings..
So after it downloaded NXT-L29C636B211 then it restarted, starting unpacking, and the installation stopped at around 5% when it restarted by it self. And that was it...
I am in a screen where i cannot use the touch, but only the buttons on the side and have the options
"Reboot system now"
"Wipe data/ factory reset"
"Wipe cache partition"
Tried the cache and rebooting, didn't do anything.
Tried wiping, and reboot, then i go in another page
"Huawei eRecovery" where it asks to connect to the wifi and download but then throws an error message "Getting package info failed"
That is pretty much it, i tried putting the update.app in the dload folder in the sd card and tried to use that method but it wouldnt boot that (used the volume + and - and power buttons) but it took me back to one of the above.
Am i out of hope? Is there anything i can do to restore it?
I really appreciate the help.

same problem!

kaelthuzad said:
Hello everybody,
I managed to brick my mate 8 as per the title, honestly thinking why did i even bother, that whole saying "If it ain't broke, don't fix it." applies here 100%.
So i have been in the NXT-L29C636B180 which i put with the dload method (original was C636B103) and since then everything was good, all except the video camera that is.
So i wanted to try to get to the nougat update (561?) but i read that you need the 211 first. As i couldn't find it i used the android app: firmware finder, and using the proxy method i told basically the system that a new update is up and download it - so this is the update option in the settings..
So after it downloaded NXT-L29C636B211 then it restarted, starting unpacking, and the installation stopped at around 5% when it restarted by it self. And that was it...
I am in a screen where i cannot use the touch, but only the buttons on the side and have the options
"Reboot system now"
"Wipe data/ factory reset"
"Wipe cache partition"
Tried the cache and rebooting, didn't do anything.
Tried wiping, and reboot, then i go in another page
"Huawei eRecovery" where it asks to connect to the wifi and download but then throws an error message "Getting package info failed"
That is pretty much it, i tried putting the update.app in the dload folder in the sd card and tried to use that method but it wouldnt boot that (used the volume + and - and power buttons) but it took me back to one of the above.
Am i out of hope? Is there anything i can do to restore it?
I really appreciate the help.
Click to expand...
Click to collapse
That happened to me too. you will still be able to enter fastboot. plug your phone to your pc and and press and hold the power and volume down. that should take you to the fastboot screen.
find the appropriate twrp recovery for your phone and use the command
fastboot flash recovery "recovery name".img. wait till its done.
press and hold the power and volume down button till the phone reboots. that will takeyou to twrp recovery. there you could either flash b210 or the beta b521 -- which i am on.

crazynitro said:
That happened to me too. you will still be able to enter fastboot. plug your phone to your pc and and press and hold the power and volume down. that should take you to the fastboot screen.
find the appropriate twrp recovery for your phone and use the command
fastboot flash recovery "recovery name".img. wait till its done.
press and hold the power and volume down button till the phone reboots. that will takeyou to twrp recovery. there you could either flash b210 or the beta b521 -- which i am on.
Click to expand...
Click to collapse
Thank you for the response. I will give it a try today after work i am a complete noob so its the first time for me to see what fastboot is, never heard of TWRP, i was always stock so never needed to mess with my phones.
If i recall doing power and volume down while plugged it was taking me to the page i mentioned to wipe the data, reboot or wipe the cache.
I managed to go to the fastboot page on the phone by pressing volume - and then plugging the phone to the pc. Now in the white page on the phone it shows, Phone unlocked in red. Does this mean just it is carrier unlocked?
So do i need to have the bootloader unlocked to do anything here? How do i do that? I cannot buy the code i suppose now since my phone is bricked i will have to go the Huawei way? And how do i do that, i saw a site to create a HUawei ID but in the registration page it didn't mention UK anywhere (where i live), mentioned Hong Kong and other Asian territories. I bought the phone from Wonda mobile, and being the 636 i would think its the asian model anyway.
Regarding TWRP, i didnt install it from before the phone was bricked will i still be able to do what you mentioned? And for the image i need to use, do i need to go to the firmware i was in before (636B180) or the one i tried to go to (636B211)? I can't seem to find the 180 anymore anywhere.
Sorry for the mass amount of questions, trying to sort it i have the phone for less than a year and i am gutted for messing it up like that.

kaelthuzad said:
Thank you for the response. I will give it a try today after work i am a complete noob so its the first time for me to see what fastboot is, never heard of TWRP, i was always stock so never needed to mess with my phones.
If i recall doing power and volume down while plugged it was taking me to the page i mentioned to wipe the data, reboot or wipe the cache.
I managed to go to the fastboot page on the phone by pressing volume - and then plugging the phone to the pc. Now in the white page on the phone it shows, Phone unlocked in red. Does this mean just it is carrier unlocked?
So do i need to have the bootloader unlocked to do anything here? How do i do that? I cannot buy the code i suppose now since my phone is bricked i will have to go the Huawei way? And how do i do that, i saw a site to create a HUawei ID but in the registration page it didn't mention UK anywhere (where i live), mentioned Hong Kong and other Asian territories. I bought the phone from Wonda mobile, and being the 636 i would think its the asian model anyway.
Regarding TWRP, i didnt install it from before the phone was bricked will i still be able to do what you mentioned? And for the image i need to use, do i need to go to the firmware i was in before (636B180) or the one i tried to go to (636B211)? I can't seem to find the 180 anymore anywhere.
Sorry for the mass amount of questions, trying to sort it i have the phone for less than a year and i am gutted for messing it up like that.
Click to expand...
Click to collapse
did u solve it plz i have same problem

first download NXT-L29C636B170 here: https://goo.gl/dHk8r8 , download Huawei extractor here: https://forum.xda-developers.com/showthread.php?t=2433454 ,unzip update.zip from B170 firmware downloaded, go to huawei extractor and choose UPDATE.APP (from B170 firmware extracted), and extract only recovery.img, download ADB Command here: https://goo.gl/05Rx06 unrar and copy recovery.img into ADB Command folder, put your phone in fastboot mode, turn off your device, then hold volume - and fast plug your phone into PC, now you are in fastboot mode,go to ADB Command folder and hold shift, holding shift key do click right with the mouse,and click on: open command window, now write: fastboot devices, enter, and you can see your device are connect, now write: fastboot flash recovery recovery.img, enter, when it finished write: fastboot reboot, and enter, then the system reboot, turn off your phone, now put UPDATE.APP (from B170 firmware) into dload folder in sdcard, with your phone off hold volume +, volume -, and power at the same time, then you can update by dload method,wait it finish and the phone reboot, now you're running NXT-L29C636B170, and if you want update to NXT-L29C636B211 you can find here: https://forum.xda-developers.com/mate-8/general/huawei-mate-8-stock-firmware-official-t3391727/amp/ unzip the update.zip and put UPDATE.APP (from B211) into dload folder in sdcard (obviously you need delete the UPDATE.APP from B170), now go to dialler and press *#*#2846579#*#* and project menu open, choose Software upgrade>SDCard Upgrate and yes, the system reboot , wait it finish and reboot, and you're now running NXT-L29C636B211. if you have any problem just tell me.
sorry for my bad english.

[HELP!!] Hardbrick after installing TWRP

Hi guys,
So today i tried to install TWRP on my Galaxy S8+ with odin
after reboot it asked for somekind of reset so i did but TWRP wasnt installed.
I tried it again but before it rebooted i checked if TWRP got installed and still no TWRP
so i flashed it again without booting in to the phone.
Phone reboots.. well actually NOT.
its not booting up and keeps showing me the Samsung Galaxy S8+ text with powered by Android below.
So now i tried to flash the stock firmware again but odin keeps saying FAIL (DeviceInfo).
i only can get into download mode, recovery mode buttons doesnt work.
also tried it with Smartswitch & Kies but after downloading the firmware it wont recognize my phone.
Please someone help? i really dont know what to do anymore...

You can download Samsung Smart Switch and choose the emergency software recovery option. You'll loose everything on the phone but it sounds
as if you're already there.
It will ask for your phone serial and exact model no., then it will download the latest release and install.
Usually will work from the screen your on, but if a prob., boot into download mode.

Ceas4r said:
Hi guys,
So today i tried to install TWRP on my Galaxy S8+ with odin
after reboot it asked for somekind of reset so i did but TWRP wasnt installed.
I tried it again but before it rebooted i checked if TWRP got installed and still no TWRP
so i flashed it again without booting in to the phone.
Phone reboots.. well actually NOT.
its not booting up and keeps showing me the Samsung Galaxy S8+ text with powered by Android below.
So now i tried to flash the stock firmware again but odin keeps saying FAIL (DeviceInfo).
i only can get into download mode, recovery mode buttons doesnt work.
also tried it with Smartswitch & Kies but after downloading the firmware it wont recognize my phone.
Please someone help? i really dont know what to do anymore...
Click to expand...
Click to collapse
What device model do you have?
I assume its a 955F or FD?
Please dont tell me you have a U version.
sent from my Note FE, S8 plus, S7 edge or S6

1. Download earlier firmware AQF7
2. Hold power, volume down and bixby button for download mode
3. Open Odin on your PC
4. Add the AQF7 BL and only this
5. Hit start and straight after this hold the 3 buttons in again power, volume down and bixby (this should fail at first and bring you straight back into download mode)
6. Now back on Odin spam the start button this time (this should flash the BL and have you sorted again)

mlrinoc said:
You can download Samsung Smart Switch and choose the emergency software recovery option. You'll loose everything on the phone but it sounds
as if you're already there.
It will ask for your phone serial and exact model no., then it will download the latest release and install.
Usually will work from the screen your on, but if a prob., boot into download mode.
Click to expand...
Click to collapse
Already tried that, like i said.. after downloading firmware it doesn't recognize my phone.

force70 said:
What device model do you have?
I assume its a 955F or FD?
Please dont tell me you have a U version.
sent from my Note FE, S8 plus, S7 edge or S6
Click to expand...
Click to collapse
i have the SM-G955F

Poukhovitch said:
1. Download earlier firmware AQF7
2. Hold power, volume down and bixby button for download mode
3. Open Odin on your PC
4. Add the AQF7 BL and only this
5. Hit start and straight after this hold the 3 buttons in again power, volume down and bixby (this should fail at first and bring you straight back into download mode)
6. Now back on Odin spam the start button this time (this should flash the BL and have you sorted again)
Click to expand...
Click to collapse
This - you probably have the newer AQG5 bootloader, which TWRP doesn't support yet.
So follow the instructions above, flash back to the previous bootloader, the you'll be able to flash TWRP ok.

Ceas4r said:
Hi guys,
So today i tried to install TWRP on my Galaxy S8+ with odin
after reboot it asked for somekind of reset so i did but TWRP wasnt installed.
I tried it again but before it rebooted i checked if TWRP got installed and still no TWRP
so i flashed it again without booting in to the phone.
Phone reboots.. well actually NOT.
its not booting up and keeps showing me the Samsung Galaxy S8+ text with powered by Android below.
So now i tried to flash the stock firmware again but odin keeps saying FAIL (DeviceInfo).
i only can get into download mode, recovery mode buttons doesnt work.
also tried it with Smartswitch & Kies but after downloading the firmware it wont recognize my phone.
Please someone help? i really dont know what to do anymore...
Click to expand...
Click to collapse
I had the same issue once before. What the fail device info. I think I fixed it by using the most recent update (I think). And messing around with csc files. All this was done half assed in desperation. Then went back to the unlocked firmware and stopped messing with it. Yes Smart switch didn't do crap. Use updato.com to obtain your firmwares

Poukhovitch said:
1. Download earlier firmware AQF7
2. Hold power, volume down and bixby button for download mode
3. Open Odin on your PC
4. Add the AQF7 BL and only this
5. Hit start and straight after this hold the 3 buttons in again power, volume down and bixby (this should fail at first and bring you straight back into download mode)
6. Now back on Odin spam the start button this time (this should flash the BL and have you sorted again)
Click to expand...
Click to collapse
Just got home and tried this! and OMG dude this actually worked! thanks!!! damn im glad my phone works again! thanks thanks thanks!! cant say it enough!!

My guide to fix the issue
https://forum.xda-developers.com/galaxy-s8+/how-to/odin-flash-fail-fixed-solutions-t3650073

My SAMSUNG Galaxy A8 2018 isn`t work

After rooting my smartphone, I turned it off and on again, and it booted up infinitely. I was embarrassed and touched this and that, then went to wipe->advanced wipe menu and accidentally changed the system file. After that, my smartphone doesn't work at all. I'm posting this because I wanted to know how to turn on this smartphone, so I hope someone who knows about this part will reply.
(OEM seems to have turned off as the OS disappeared when I judged it.)

So can you boot into anything? Try all button combinations possible.
Or it is just black screen without a single text no matter how ?

LR7875 said:
So can you boot into anything? Try all button combinations possible.
Or it is just black screen without a single text no matter how ?
Click to expand...
Click to collapse
Now all of a sudden, a lightning bolt icon appears on the black screen, which appears to be charging.

Do not unplug your phone. Press and hold the Power key and the Volume down key simultaneously for more than 7 seconds. As soon as the screen goes black hold down Volume Down + Volume Up for a few moments.

LR7875 said:
So can you boot into anything? Try all button combinations possible.
Or it is just black screen without a single text no matter how ?
Click to expand...
Click to collapse
The power button and the volume bottom button were pressed at the same time and pressed for 7 seconds or more. The smartphone was turned off. Since I used TWRP in this state, I have been routed using the powerward button and the power button to move the powerward button and the power button for a long time to move the BACKUP entry, and the system image is displayed, but the system is displayed as 0 MB. And if you try to reboot, the NO OS Installed error will be opened and you want to install the TWRP app, and Failed to Mount / System (No Such Devices) Error appears. Now this is the symptoms of my smartphone.

LR7875 said:
Do not unplug your phone. Press and hold the Power key and the Volume down key simultaneously for more than 7 seconds. As soon as the screen goes black hold down Volume Down + Volume Up for a few moments.
Click to expand...
Click to collapse
First, I asked you to go to download mode. How do I have since that? (OEM seems to be forcibly turned off when the OS itself is gone. I turned on the routing before.)

You are in twrp now, but shows system as 0mb?
Can you press mount> system or wipe> factory reset?

holyfonts6754 said:
First, I asked you to go to download mode. How do I have since that? (OEM seems to be forcibly turned off when the OS itself is gone. I turned on the routing before.)
Click to expand...
Click to collapse
No. With OEM locked, even if your phone is locked as tight as bill gates's wallet, you can still boot into download mode. However You can only flash stock ROM in that case. This is the definition of OEM lock: you can flash, but cannot flash anything except stock rom.
You must not be meaning OEM lock.

LR7875 said:
You are in twrp now, but shows system as 0mb?
Can you press mount> system or wipe> factory reset?
Click to expand...
Click to collapse
I've just tried it, and they all give me a "failed to mount '/system' (no such device)" error.

LR7875 said:
You are in twrp now, but shows system as 0mb?
Can you press mount> system or wipe> factory reset?
Click to expand...
Click to collapse
Although I am looking for information on the Internet, it seems that a program called Odin is necessary for Samsung phones. The internet says that you can upload the genuine firmware, but is there any other way to upload this genuine firmware other than using Odin? And what should I do if my smartphone is not recognized?

What happens of you press reboot> bootloader in twrp?

LR7875 said:
What happens of you press reboot> bootloader in twrp?
Click to expand...
Click to collapse
When I enter reboot from twrp, four items are displayed on my smartphone: system, power off, recovery, and download. If you go to system, the Galaxy A8 logo is displayed and it stops, and if you go to download, it goes into download mode.
The bootloader entry is not visible.

holyfonts6754 said:
Although I am looking for information on the Internet, it seems that a program called Odin is necessary for Samsung phones. The internet says that you can upload the genuine firmware, but is there any other way to upload this genuine firmware other than using Odin? And what should I do if my smartphone is not recognized?
Click to expand...
Click to collapse
Look inside here:
Samsung Flash File Download (Stock ROM) - RepairMyMobile.co
Download Sasmung Flash file/stock rom/firmware for your phones. Original files has direct link and site...how to flash without box z3x, ufs hwk odin tool
repairmymobile.in

jwoegerbauer said:
Look inside here:
Samsung Flash File Download (Stock ROM) - RepairMyMobile.co
Download Sasmung Flash file/stock rom/firmware for your phones. Original files has direct link and site...how to flash without box z3x, ufs hwk odin tool
repairmymobile.in
Click to expand...
Click to collapse
When I went to this site, there was nothing of the Galaxy A8 2018 I wanted. So what should I do? Is it possible even if the OEM is locked?

LR7875 said:
What happens of you press reboot> bootloader in twrp?
Click to expand...
Click to collapse
When I went to the path where I had touched the system setting incorrectly and changed the system setting to ext2, what was displayed as 0MB was displayed as 7MB. After I just selected ext2 it was still showing 0MB, but now it shows 7MB.
But the no os installed error is still displayed.
However, the Failed to Mount / System (No Such Devices) error no longer appeared.

holyfonts6754 said:
When I went to this site, there was nothing of the Galaxy A8 2018 I wanted. So what should I do? Is it possible even if the OEM is locked?
Click to expand...
Click to collapse
1. Then request phone's Stock ROM directly from Samsung.
2. As you were already told flashing a phone's Stock ROM doesn't require phone's bootloader is unlocked.
You reported you have flashed TWRP successfully: this means your phone's bootloader got successfully unlocked.
Take note that TWRP is used to flash Custom ROMs.

Stock rom: www.samfw.com
For odin and usb drivers just search
Flash in download mode

LR7875 said:
Stock rom: www.samfw.com
For odin and usb drivers just search
Flash in download mode
Click to expand...
Click to collapse
Odin doesn't seem to recognize my phone. Since the USB driver is a Samsung phone, I downloaded and installed the Samsung integrated USB driver. Yet it is not recognized. Download mode is now in the state.

jwoegerbauer said:
1. Then request phone's Stock ROM directly from Samsung.
2. As you were already told flashing a phone's Stock ROM doesn't require phone's bootloader is unlocked.
You reported you have flashed TWRP successfully: this means your phone's bootloader got successfully unlocked.
Take note that TWRP is used to flash Custom ROMs.
Click to expand...
Click to collapse
I'm still a beginner, so I don't know how to flash custom roms or anything like that. Is there a way to flash a custom rom or original firmware using TWRP? Now, it enters the download mode and waits for it to be recognized by Odin, but it is still not recognized by Odin.
Does it usually take a long time for the smartphone to be recognized by Odin?

Do you have other phone? Is the cable good and transfering files?