Re-locking Bootloader on Galaxy Tab A 2020 (SM-510) - Android Q&A, Help & Troubleshooting

Basically some time back I rooted this tablet but since then I've reverted to the stock rom. I've been upgrading the OS through the system update. Everytime I boot the tablet I get the message "this device bootloader is unlocked and not safe bluh bluh" I was wondering if I could re rock the bootloader to get rid of this message along with getting back playstore apps back like Netflix and others (I know I can just download the apk but some apps don't allow that). Now with a quick YouTube search I did find an easy way to re lock but I don't want to end up bricking it. Do you guys think it's safe?

@LegendJim
Don't own a Samsung, hence don't know whether you can access it via Fastboot and in turn don't know whether this may work
Code:
fastboot devices
fastboot flashing lock
fastboot reboot

jwoegerbauer said:
@LegendJim
Don't own a Samsung, hence don't know whether you can access it via Fastboot and in turn don't know whether this may work
Code:
fastboot devices
fastboot flashing lock
fastboot reboot
Click to expand...
Click to collapse
Do u know if by doing this u unlock the apps like Netflix and other **** (ik you can download the apk for some apps but doesn't work for evything)

@LegendJim
Don't think the apps you've in mind query the state of device's boot-loader, at least have never heard of this.

Related

Unlock bootloader, Asus ZenFone 3 ultra zu680kl

There is tool from Asus this month to unlock the bootloader. You should know that you lose the guarantee and may no longer receive official updates. After you install the apk and restart the phone, all data on the internal memory will be deleted.
Whoa! the unlock tool is out!
Is there any chance someone can make a root guide? I really want to buy Zenfone 3 Ultra but I wouldn't do it without root method out there. Any help is appreciated.
Were waiting on a dev to compile TWRP for us then we can get root
Trying to root ZU680KL
Hi!
I have unlocked my ZU680KL with the Asus unlock tool. Bootloader shows 'unlocked'.
Then I unpacked the stock boot.img (from WW_13.6.15.21_20161215, this what I have installed) and using Vim I set:*ro.secure=0, ro.adb.secure=0, and*ro.debuggable=1 in default.prop.
Repacked the new boot.img and flashed it with 'fastboot flash boot new-boot.img'.
'adb shell getprop' indicates that the new setting was applied.
Yet in the stock recovery mode I cannot install SuperSU-v2.79.zip and no adb devices are seen in recovery mode.
What else is needed? Do I have to edit something in the stock recovery or must wait for custom TWRP?
I was following the basic instructions found here:
https://machiry.wordpress.com/2012/10/26/getting-root-access-on-android-the-actual-way/
iirc, there's already a thread going where both root & TWRP have been successfully loaded
.
hillg001 said:
iirc, there's already a thread going where both root & TWRP have been successfully loaded
.
Click to expand...
Click to collapse
Any news?
https://forum.xda-developers.com/ze...t-zenfone-3-ultra-7-0-ww14-1010-1703-t3612108
ndi said:
There is tool from Asus this month to unlock the bootloader. You should know that you lose the guarantee and may no longer receive official updates. After you install the apk and restart the phone, all data on the internal memory will be deleted.
Click to expand...
Click to collapse
when the ultra 3 first came out, many suggested waiting for a boot loader unlocker, & not updating any Android versions, because an unlock program might not work on subsequent Android versions. Is that the case? ... or does the unlocker work on the newest Android version too.
Thanks
.
The official download link is
http://dlcdnet.asus.com/pub/ASUS/ZenFone/ZU680KL/ZU680KL_SIGNED_Android_M_UnlockTool_2017_0222.zip
Available from page:
https://www.asus.com/us/supportonly/Zenfone3 Ultra(ZU680KL)/HelpDesk_Download/
I have just downloaded the zip, made the APK and installed it on my Zenfone 3 Ultra.
When I run the app, after clicking all the "are you sure..." acknowledgements, the app does not succeed in unlocking the bootloader. The error message indicates an unknown or perhaps network error, and suggests I "try again later..."
Running WW_14.1010.1804.75_20180612
Anybody else seeing this?
Ideas??
Reading on the ASUS blogs, they indicate it isn't supported anymore (no surprise), but shouldn't it still work??
heroxbd said:
The official download link is
http://dlcdnet.asus.com/pub/ASUS/ZenFone/ZU680KL/ZU680KL_SIGNED_Android_M_UnlockTool_2017_0222.zip
Available from page:
https://www.asus.com/us/supportonly/Zenfone3 Ultra(ZU680KL)/HelpDesk_Download/
Click to expand...
Click to collapse
Note the links above no longer work. Yes, you can get to the page, but the unlocker isn't there any more.
ndi said:
There is tool from Asus this month to unlock the bootloader. You should know that you lose the guarantee and may no longer receive official updates. After you install the apk and restart the phone, all data on the internal memory will be deleted.
Click to expand...
Click to collapse
Does anybody know which version(s) of the stock ROM this works with? I've tried a couple, and all of them just yield the "unknown error" when running the unlocker.
If you know of a stock ROM version this works with, please post a URL for where I can find it (as it's proven really hard to find specific versions...)
Thanks in advance.
agree it no longer works. getting the unknown error...wait message that everyone else is getting. there are other XDA threads that indicate the same.
Keeping bootloader locked. Used ADB to install full root with Magisk and Recovery with TWRP. Phone is working fine and even the SafetyNet checks pass as well. Debloated with ADB App Control program (paid for full version).
-
jrchester said:
Used ADB to install full root with Magisk and Recovery with TWRP. Phone is working fine and even and SafetyNet checks pass as well. Debloated with ADB App Control program (paid for full version).
Click to expand...
Click to collapse
How did you do that? Can I get more details?
Madlzz said:
How did you do that? Can I get more details?
Click to expand...
Click to collapse
Hi Madlzz:
Checkout my XDA post here for more details on how I did this:
unlocking bootloader zenfone ultra
Hi all ive had my zenfone 3 ultra (zu680kl) for some years, until a couple of days ago, my friend wanted to see if my phone could be charged with a dash charger, where others wouldnt my battery was already low and overnight it ran out and when i...
forum.xda-developers.com
- John
Madlzz said:
How did you do that? Can I get more details?
Click to expand...
Click to collapse
Hello. I can confirm that on this phone TWRP can be flashed WITHOUT unlocking the bootloader, since that seems not to be an option anymore (since the official unlock tool doesn't work anymore and neither are the usual commands for unlock).
Indeed it is weird that we can install a custom recovery and root with the locked bootloader but i've done it yesterday and there is no problem. My bootloader is locked, I have TWRP installed and root by Magisk latest.
You just need to boot into fastboot mode (press volume up and power at the same time), connect your phone to PC, go into where you have stored your adb and fastboot folder and in that folder open a CMD prompt and enter the command "fastboot flash recovery" and copy the name of the TWRP for our device after "recovery". And press enter. Then you disconnect from PC and navigate in the fastboot menu to the section "recovery" and press power button to boot into TWRP.
After that you can flash latest Magisk zip from the "install" section in TWRP and there you go, you have root.
And the bootloader will still remain locked, hence the safetynet will pass without any problems (play store certified).
lucy1983 said:
Hello. I can confirm that on this phone TWRP can be flashed WITHOUT unlocking the bootloader, since that seems not to be an option anymore (since the official unlock tool doesn't work anymore and neither are the usual commands for unlock).
Indeed it is weird that we can install a custom recovery and root with the locked bootloader but i've done it yesterday and there is no problem. My bootloader is locked, I have TWRP installed and root by Magisk latest.
You just need to boot into fastboot mode (press volume up and power at the same time), connect your phone to PC, go into where you have stored your adb and fastboot folder and in that folder open a CMD prompt and enter the command "fastboot flash recovery" and copy the name of the TWRP for our device after "recovery". And press enter. Then you disconnect from PC and navigate in the fastboot menu to the section "recovery" and press power button to boot into TWRP.
After that you can flash latest Magisk zip from the "install" section in TWRP and there you go, you have root.
And the bootloader will still remain locked, hence the safetynet will pass without any problems (play store certified).
Click to expand...
Click to collapse
It's what I've been saying and what I posted originally. I posted to help others out. I don't have to argue with users here that say it can't be done. I did it and mine is still working 100% correctly. I stand by what I said originally and what you just posted. And the comment that I was lucky is ludicrous. Luck has nothing to do with it.
jrchester said:
It's what I've been saying and what I posted originally. I posted to help others out. I don't have to argue with users here that say it can't be done. I did it and mine is still working 100% correctly. I stand by what I said originally and what you just posted. And the comment that I was lucky is ludicrous. Luck has nothing to do with it.
Click to expand...
Click to collapse
Yup. It's not a matter of luck. It just can be done without unlocking bootloader on this phone. I can't explain why, because on the majority of phones you can't do anything without unlocking the bootloader. Although an explanation could be the lack of server maintenance from Asus side (since the problem with the unlock tool seems to be from their servers) for this phone. But yeah, you can have TWRP and root on this phone with the bootloader locked. That is a fact.
PS: I'm running the latest official firmware (.75) from Asus.
lucy1983 said:
Yup. It's not a matter of luck. It just can be done without unlocking bootloader on this phone. I can't explain why, because on the majority of phones you can't do anything without unlocking the bootloader. Although an explanation could be the lack of server maintenance from Asus side (since the problem with the unlock tool seems to be from their servers) for this phone. But yeah, you can have TWRP and root on this phone with the bootloader locked. That is a fact.
PS: I'm running the latest official firmware (.75) from Asus.
Click to expand...
Click to collapse
Ditto. Running 1804.75_20180612 official. Also running and keeping Magisk at 23.0 to retain safety check functions. Magisk 24 removes that, but you can reinstall back to 23.0 without any issues and just ignore the updates.
jrchester said:
Ditto. Running 1804.75_20180612 official. Also running and keeping Magisk at 23.0 to retain safety check functions. Magisk 24 removes that, but you can reinstall back to 23.0 without any issues and just ignore the updates.
Click to expand...
Click to collapse
You can install Magisk 24 without any problems. For me it doesn't break safetynet and play store says "certified". Even without enabling zigisk.

(oem: unlock is not allowed), can't turn on oem unlock because factory reset bricked

[SOLVED] i'm stuck in a vicious loop of flashing that i need to unlock my bootloader to flash stock rom but my phone is stuck on the page "CHECKING CONNECTION THIS MAY TAKE A WHILE" hence rendering me helpless on how to turn allow oem unlock on in dev settings on my lenovo vibe k5, I used king root to root my device but it started misbehaving with google play services so i decided to factory reset it, now i can't even get into my phone, and can't even flash stock rom any suggestions how to get out of this?
Edit: HI everyone thanks for the helpful comments after I've SOLVED this just a suggestion for whoever who stumbles on this or is in a similar situation like this , Turns out my twrp did not do the factory reset properly and hence allow oem unlock was on and hence i was able to flash a stock ROM using QFIL program in QPST description of the procedure will be and can be found on the super thread of the device please refer and flash it.
IMPORTANT: flash a stock ROM of a lower version that seems to work wonders ,I literally had to uninstall android by wiping my system folder because I didn't have a backup[NOOB MISTAKE] and i thought i'll wipe entirely and reinstall the OS and that worked out by the power of other helpful XDA threads
One question
What is bootloader status when you buy the phone from your provider??
I want to buy it but Not if at the end i will have bootloader locked and not to be able to unlock it??
Like the Sony Xperia models
All provider ones comes with bootloader locked forever so you never even get root or twrp or anything custom
Please advice me regarding bootloader locked status
Thanks

More Peace of mind

Hi guys, so obviously is much better to root our phone, and I have it rooted, and I also have cerberus installed as a system app and hidden, BUT let's say that tomorrow someone steals my phone, I want to be prepared to block it or track it in more than just one way, and I have read that using the miui account block is also a very good way, but I dont know, since the bootloader is unlocked, isn't it very easy for the thief to just flash any rom and have it working well?, I know that much of the thiefs dont know anything about all this, but as I said I wanna take every precaution possible.
What would you recommend me to keep my phone more secure in case anything bad happens? Maybe I don't know, keep it rooted but still lock the bootloader, maybe this statement is very dumb haha Im no expert.
Just dont let your phone get stolen.
Modern problems require modern solution.
xjudexiii said:
Just dont let your phone get stolen.
Modern problems require modern solution.[/QUO
Click to expand...
Click to collapse
Lock your recovery is the only security you have. Lol. But like he said take good care of your device youl be just fine.
I have unlocked bootloader, custom recovery with PIN and Cerberus with fake shutdown in lockscreen. but I know that all this is just to make the thief's life a little difficult, because either the locked or unlocked bootloader is possible to bypass and format the phone.
now your question / scenario begs for little details!
on Unlocked bootloader,
1. you can always flash stock recovery (found in fastboot rom of beryllium) and replace twrp or
2. never flash recovery on unlocked bootloader and always boot it via fastboot command for security sake
HOWEVER
1. lets assume some one steal your device and boot is unlocked and he/she can flash twrp then what you should never flash DFE (disable force encryption treble) (via twrp) so that your internal storage stays ENCRYPTED and any recovery will be unable to MOUNT IT
2. use digit screen lock method so that any recovery will ask for password
The idea is, since hardware is stolen but the theif won't able to access your peronal information! and if he tries to boot up, he won't able to unlock by the digits you set as screen lock, wrong screen locks eventually trigger miui mechanism to give warning to wait few hours before retrying and until you reach a point where miui will NOT even allow you to unlock the fone. miui will consider it stolen.

.HELP! ..SOS..!! Can't Flash TWRP, Magisk won't install zips.......

Hello! I can't seem to make TWRP Official app (from Google Playstore) and Magisk root to work.... so hacking game is still a distant possibility here. I downloaded both app, but couldn't get them to work, so now uninstalled both.
My phone is: Moto G7-Power with Android 9 (Pie), my questions are:
1. Which of these two should I install first on android without PC? Magisk or TWRP? Seem to get conflicting instruction from those tutorials on Youtube.
2. After downloaded "TWRP Official app" from Google Playstore, chose my phone from the list and downloaded the version for my phone. It said downloaded successful, but I can't flash TWRP, can't open it in recovery mode (hardreset), it wouldn't do anything!
3. As for Magisk apk... one of the two files won't install, the zip files.... it said "failed"... so what do I do then?
Can anyone please help me fix all these problems? Very frustrating right now.
Morky001 said:
Hello! I can't seem to make TWRP Official app (from Google Playstore) and Magisk root to work.... so hacking game is still a distant possibility here. I downloaded both app, but couldn't get them to work, so now uninstalled both.
My phone is: Moto G7-Power with Android 9 (Pie), my questions are:
1. Which of these two should I install first on android without PC? Magisk or TWRP? Seem to get conflicting instruction from those tutorials on Youtube.
2. After downloaded "TWRP Official app" from Google Playstore, chose my phone from the list and downloaded the version for my phone. It said downloaded successful, but I can't flash TWRP, can't open it in recovery mode (hardreset), it wouldn't do anything!
3. As for Magisk apk... one of the two files won't install, the zip files.... it said "failed"... so what do I do then?
Can anyone please help me fix all these problems? Very frustrating right now.
Click to expand...
Click to collapse
Hello, Morky.
I am afraid I don't understand what you really mean by your question above. You have not used a PC yet but tried to flash TWRP. Please give me more insight on what you are trying to do.
x.ak**** said:
Hello, Morky.
I am afraid I don't understand what you really mean by your question above. You have not used a PC yet but tried to flash TWRP. Please give me more insight on what you are trying to do.
Click to expand...
Click to collapse
Thank you, Kumar for your response. First of, I'm NOT a techie like you. I just followed these tutorials on YouTube....
With TWRP app this is what happened (or not happened):
https://www.youtube.com/watch?v=RtvI2C9VrOY
Started having problem at the 3:00 min mark here as well... even with hardreset
https://www.youtube.com/watch?v=wEHChHcpZEI
I couldn't do what this guy did at the 3:00 min mark....
With Magisk Manager app.... what happened was just like at the 3:00 min mark on this video
https://www.youtube.com/watch?v=DvlLy42UtGg
I thought explaining what'd happened by referencing what I was doing per these tutorials would better answer your questions, since I don't know how else to say it, again not a techie person.
<Morky>
You have to unlock your bootloader first. It requires that you read out a encrypted code from the phone, via the USB port using ADB/Fastboot. The code is entered into a web page at Motorola, and if your phone can be unlocked, they will send you a unlock code. Then you fastboot the unlock code. then fastboot twrp. then flash magisk.
you may consider going to the forum page for your phone, it will have all the details.
https://forum.xda-developers.com/g7-power
look under the guides section
hope that helps
Nivead said:
You have to unlock your bootloader first. It requires that you read out a encrypted code from the phone, via the USB port using ADB/Fastboot. The code is entered into a web page at Motorola, and if your phone can be unlocked, they will send you a unlock code. Then you fastboot the unlock code. then fastboot twrp. then flash magisk.
you may consider going to the forum page for your phone, it will have all the details.
https://forum.xda-developers.com/g7-power
look under the guides section
hope that helps
Click to expand...
Click to collapse
Nivead, I did unlocked the OEM before downloading that though, but still didn't work. The phone is an unlocked phone.
And, thank you for your help.
Morky001 said:
Kumar, I did unlocked the OEM before downloading that though, but still didn't work.
Click to expand...
Click to collapse
And.. thank you.
Morky001 said:
Thank you, Kumar for your response. First of, I'm NOT a techie like you. I just followed these tutorials on YouTube....
With TWRP app this is what happened (or not happened):
https://www.youtube.com/watch?v=RtvI2C9VrOY
Started having problem at the 3:00 min mark here as well... even with hardreset
https://www.youtube.com/watch?v=wEHChHcpZEI
I couldn't do what this guy did at the 3:00 min mark....
With Magisk Manager app.... what happened was just like at the 3:00 min mark on this video
https://www.youtube.com/watch?v=DvlLy42UtGg
I thought explaining what'd happened by referencing what I was doing per these tutorials would better answer your questions, since I don't know how else to say it, again not a techie person.
<Morky>
Click to expand...
Click to collapse
Hello, Morky.
I do not understand how one can flash any image directly from the device without rooting it. Now, in order to root your device you will need either TWRP or flash SUPERSU or Magisk using fastboot. If you wish to root your device and install TWRP on it, you will require access to a computer.
The phone has to be BOOTLOADER unlocked in order to install TWRP and Magisk. Turning on OEM unlock, is a step in unlocking the phone - but it does not unlock the bootloader.
When you are saying the phone is unlocked, I believe you mean the phone is unlocked so it will run on any cell phone carrier - a way the phone is sold. But its not bootloader unlocked.
Bootloader unlocked is different - Most phones are sold with the bootloader locked and because of that, you cannot modify the operating system. Unlocking the bootloader allows you to modify the the android operating system.
You will have to install Motorola USB drivers on your computer. Go to the Motorola page at: https://motorola-global-portal.custhelp.com/app/standalone/bootloader/unlock-your-device-a and read about unlocking the bootloader. You will have to create a Motorola account to get an unlock code, if the bootloader can be unlocked. The pages will also have a link to obtain the Motorola USB drivers (MotorolaDeviceManager_2.5.4.exe).
You will need to install Minimal ADB Fastboot, a terminal program that allows you to push data/commands back and forth between the computer and your phone via the USB port. https://forum.xda-developers.com/showthread.php?t=2317790 You will use the FASTBOOT command to obtain the encrypted unlock code from the phone. You will also use FASTBOOT to install the unlock code that Motorola will send you,
After the bootloader is unlocked, you will use FASTBOOT to install TWRP into your phones recovery partition. TWRP info at https://www.xda-developers.com/how-to-install-twrp/ TWRP is a backup and recovery program that is used to install programs, etc,
After you install TWRP, you can install MAGISK, which will ROOT the phone. Magisk info at https://forum.xda-developers.com/apps/magisk.
Please go to the forum I told you about and under the guides section you will find documentation that explains how to root the phone and install custom ROMs.
https://forum.xda-developers.com/g7-power A guide will give you the finer details for your phone model.
Before you do any of the above, I advise you strongly to have a backup. Using FASTBOOT there is a command called "getvar all", it will return a long printout of info and it will include a readout of the original firmware installed on the phone. You will want to know this in case you brick the phone. Having this info will allow you to obtain the original firmware and be able to restore it via FASTBOOT. Firmwares at https://mirrors.lolinet.com/firmware/moto/ .l After installing TWRP, you should backup the phone to your SD card and then move the backup to your computer for future needs.
Good luck.
Nivead said:
The phone has to be BOOTLOADER unlocked in order to install TWRP and Magisk. Turning on OEM unlock, is a step in unlocking the phone - but it does not unlock the bootloader.
When you are saying the phone is unlocked, I believe you mean the phone is unlocked so it will run on any cell phone carrier - a way the phone is sold. But its not bootloader unlocked.
Bootloader unlocked is different - Most phones are sold with the bootloader locked and because of that, you cannot modify the operating system. Unlocking the bootloader allows you to modify the the android operating system.
You will have to install Motorola USB drivers on your computer. Go to the Motorola page at: https://motorola-global-portal.custhelp.com/app/standalone/bootloader/unlock-your-device-a and read about unlocking the bootloader. You will have to create a Motorola account to get an unlock code, if the bootloader can be unlocked. The pages will also have a link to obtain the Motorola USB drivers (MotorolaDeviceManager_2.5.4.exe).
You will need to install Minimal ADB Fastboot, a terminal program that allows you to push data/commands back and forth between the computer and your phone via the USB port. https://forum.xda-developers.com/showthread.php?t=2317790 You will use the FASTBOOT command to obtain the encrypted unlock code from the phone. You will also use FASTBOOT to install the unlock code that Motorola will send you,
After the bootloader is unlocked, you will use FASTBOOT to install TWRP into your phones recovery partition. TWRP info at https://www.xda-developers.com/how-to-install-twrp/ TWRP is a backup and recovery program that is used to install programs, etc,
After you install TWRP, you can install MAGISK, which will ROOT the phone. Magisk info at https://forum.xda-developers.com/apps/magisk.
Please go to the forum I told you about and under the guides section you will find documentation that explains how to root the phone and install custom ROMs.
https://forum.xda-developers.com/g7-power A guide will give you the finer details for your phone model.
Before you do any of the above, I advise you strongly to have a backup. Using FASTBOOT there is a command called "getvar all", it will return a long printout of info and it will include a readout of the original firmware installed on the phone. You will want to know this in case you brick the phone. Having this info will allow you to obtain the original firmware and be able to restore it via FASTBOOT. Firmwares at https://mirrors.lolinet.com/firmware/moto/ .l After installing TWRP, you should backup the phone to your SD card and then move the backup to your computer for future needs.
Good luck.
Click to expand...
Click to collapse
Deae Nivead,
..Oy! That sounds painful!! Guess, I have no business be doing this lock/unlock/rooting thing, huh?! Not a techie at all, this is very foreign to me! And those guys on YouTube... they lied then, said I could do all these without PC... Yeah, right! Turned out, it wasn't as easy as they were showing on videos. (((sigh))) Would be easier if I just send my phone to you?!?!!!
Thank yoooouuu soooo much for taking the time to write/tell me all this, truly appreciate your help and replies.
<Morky>
x.ak**** said:
Hello, Morky.
I do not understand how one can flash any image directly from the device without rooting it. Now, in order to root your device you will need either TWRP or flash SUPERSU or Magisk using fastboot. If you wish to root your device and install TWRP on it, you will require access to a computer.
Click to expand...
Click to collapse
Kumar,
I guess those YouTube tutorials omitted left out a lot of steps and not as easy nor simple as they made it to be.... "without PC" as they claimed. How would someone with no background in computer programing, nor a "techie" like you here at xda... like me would know that?! If you "don't understand how....." I wouldn't understand either!! More so than you. One thing I've learnt now, all those tutorials about rooting and TWRP. on YouTube... are crap.

Error "Only official released binaries are allowed to be flashed(recovery)"?

Hello. guys! My smartphone: Samsung Galaxy J4(2018), j4lte. I trying to flash custom recovery TWRP. I have already unlocked the bootloader in settings, and have been waiting over two weeks for it to physically unlock. But the bootloader itself does not want to be unlocked physically. And more, I will add. I have this thing, I press a keyboard shortcut to go into download mode, my phone turns on and immediately turns off. To enter download mode, I need to go into the built-in recovery and select "reboot to download mode" there. But then, I don't have a warning that a custom system might put the phone at risk of breaking. And there are no lines that indicate the status of the bootloader, for example, is it unlocked or not.
My version Android: 10
Download Mode: U8
I use program for flashing: Odin, current version
Damn i have the same issue with the Note8, lez hope that soemone ansers that cuz reinstalling the Stock dosent help with this when try to install TWRP
NikitaSav said:
Hello. guys! My smartphone: Samsung Galaxy J4(2018), j4lte. I trying to flash custom recovery TWRP. I have already unlocked the bootloader in settings, and have been waiting over two weeks for it to physically unlock. But the bootloader itself does not want to be unlocked physically. And more, I will add. I have this thing, I press a keyboard shortcut to go into download mode, my phone turns on and immediately turns off. To enter download mode, I need to go into the built-in recovery and select "reboot to download mode" there. But then, I don't have a warning that a custom system might put the phone at risk of breaking. And there are no lines that indicate the status of the bootloader, for example, is it unlocked or not.
My version Android: 10
Download Mode: U8
I use program for flashing: Odin, current version
Click to expand...
Click to collapse
Did you install smasung multi disabler?
DavidxxxD said:
Did you install smasung multi disabler?
Click to expand...
Click to collapse
oh no **** guess im just dumby ^_°
DavidxxxD said:
Did you install smasung multi disabler?
Click to expand...
Click to collapse
tho crap how im supposed to install it? odin dosent want it and i cant use since ivent got TWRP on it wich i can not install because it says, as u guesst: Only official binaries can be installed no matter WHAT I DO -.- hate samsung by now
NikitaSav said:
Hello. guys! My smartphone: Samsung Galaxy J4(2018), j4lte. I trying to flash custom recovery TWRP. I have already unlocked the bootloader in settings, and have been waiting over two weeks for it to physically unlock. But the bootloader itself does not want to be unlocked physically. And more, I will add. I have this thing, I press a keyboard shortcut to go into download mode, my phone turns on and immediately turns off. To enter download mode, I need to go into the built-in recovery and select "reboot to download mode" there. But then, I don't have a warning that a custom system might put the phone at risk of breaking. And there are no lines that indicate the status of the bootloader, for example, is it unlocked or not.
My version Android: 10
Download Mode: U8
I use program for flashing: Odin, current version
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And this version of Odin? https://forum.xda-developers.com/t/patched-odin-3-13-1.3762572/
joke19 said:
А эта версия Одина? https://forum.xda-developers.com/t/patched-odin-3-13-1.3762572/
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I have RMM Prenormal
C7TJFVB7-CAZ said:
hate samsung by now
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Same here, reinstalling full stock should fix it. Also try combiation firmware if that doesn't work. Does your device have a vbmeta partition?
DavidxxxD said:
Same here, reinstalling full stock should fix it. Also try combiation firmware if that doesn't work. Does your device have a vbmeta partition?
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combination file not working on Binary 8/9 on Samsung Galaxy J4
I've had the same issue on a J330F after Android 9 update - tried to modify, got stuck in the same red text. I don't remember any info from odin mode, but It booted fine again after flashing the same version over it. Though I had to wait 24 hours before trying to modify again. Not sure what's going on in your case, but Samsung security can be real pain, that's for sure.
I wouldn't get any of their newer models to mess around with, compatibility is good and there are reliable methods, but generally everything works better on more generic Qualcomm devices. Just take a look at most MSM845 devices from around 2019 - big diffrence in terms of compatibilty, many of them are supported by newer versions of Linux than what is included with Android, some can even boot Windows 11.
DavidxxxD said:
I've had the same issue on a J330F after Android 9 update - tried to modify, got stuck in the same red text. I don't remember any info from odin mode, but It booted fine again after flashing the same version over it. Though I had to wait 24 hours before trying to modify again. Not sure what's going on in your case, but Samsung security can be real pain, that's for sure.
I wouldn't get any of their newer models to mess around with, compatibility is good and there are reliable methods, but generally everything works better on more generic Qualcomm devices. Just take a look at most MSM845 devices from around 2019 - big diffrence in terms of compatibilty, many of them are supported by newer versions of Linux than what is included with Android, some can even boot Windows 11.
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I have Android 10
I try all, that i can to try
Same problem
After unlocking your bootloader, you have to allow your device to boot again:
Helix-one said:
I AM NOT RESPONSIBLE FOR ANY DAMAGES DONE BY YOUR MISHAPS
Unlocking the bootloader on modern Samsung devices have some caveats. The newly introduced VaultKeeper service will make the bootloader reject any unofficial partitions in some cirumstances.
Allow bootloader unlocking in Developer options → OEM unlocking
Reboot to download mode: power off your device and press the download mode key combo for your device
Long press volume up to unlock the bootloader. This will wipe your data and automatically reboot.
Go through the initial setup. Skip through all the steps since data will be wiped again in later steps. Connect the device to Internet during the setup.
Enable developer options, and confirm that the OEM unlocking option exists and is grayed out. This means the VaultKeeper service has unleashed the bootloader.
Voila! Your bootloader now accepts unofficial images in download mode.
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After flashing TWRP, you may need to wipe data and flash Multidisabler
V0latyle said:
After unlocking your bootloader, you have to allow your device to boot again:
After flashing TWRP, you may need to wipe data and flash Multidisabler
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I cant even flash TWRP
Kgstate said:
I cant even flash TWRP
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When you're in Download Mode, look for something that says "KG: Checking". If this says "Prenormal" you won't be able to flash custom binaries, and need to do as I described - boot the device, connect to the Internet, wait for the OEM unlocking toggle to become visible again.
V0latyle said:
When you're in Download Mode, look for something that says "KG: Checking". If this says "Prenormal" you won't be able to flash custom binaries, and need to do as I described - boot the device, connect to the Internet, wait for the OEM unlocking toggle to become visible again.
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Editing date to make it 7 days later and Connecting the internet just worked, thank you for your help!

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