How to unlock Samsung A01 - General Questions and Answers

I need some help unlocking the bootloader on my Samsung A01. The instructions say to enable developer mode — basic stuff — and then enable USB debugging and OEM Unlocking. You guessed it: the OEM Unlock option just ain't there. I tried the trick with chaging the date and checking for updates, but it didn't help. Please, can anyone give me some help that will actually fix the problem? I just want to root this damn thing.

To root phone's Android unlocking phone's bootloader is NOT required.

xXx yYy said:
To root phone's Android unlocking phone's bootloader is NOT required.
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Ok then. How do I do it? All the other guides tell me I have to. And how would I install TWRP, which I definitely want to do?
Every guide I look at tells me I have to unlock the bootloader first.

You do NOT need to root your phone's Android to install TWRP - a custom recovery, but you will need to unlock the bootloader. Take note that Android OS has nothing to do with phone's bootloader, that Android OS gets launched by bootloader if device didn't get tampered.

xXx yYy said:
You do NOT need to root your phone's Android to install TWRP - a custom recovery, but you will need to unlock the bootloader. Take note that Android OS has nothing to do with phone's bootloader, that Android OS gets launched by bootloader if device didn't get tampered.
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Ok, how do I just root for now? I want Magisk. I'm trying to install it with ADB, but I'm getting Error 21.
Furthermore, how do I unlock the bootloader when the system doesn't want to give me the OEM Unlocking option?

You do NOT need to root your phone's Android before to install Magisk: you typically root Android OS by means of Magisk.
You install Magisk via TWRP what requires an unlocked bootloader. You unlock a phone's bootloader via FASTBOOT tool what requires OEM Unlock option got activated before applying the bootloader-unlock.

xXx yYy said:
You do NOT need to root your phone's Android before to install Magisk: you typically root Android OS by means of Magisk.
You install Magisk via TWRP what requires an unlocked bootloader. You unlock a phone's bootloader via FASTBOOT tool what requires OEM Unlock option got activated before applying the bootloader-unlock.
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So basically until I can use the OEM Unlock option, I can't do a darn thing, can I?
So how do I get it?

I'm going to ask for help on this again. I've been around the forum, I've looked for anything I could find, and I'm still no closer to getting this thing solved.

Related

[Discussion][Help][Scenarios] SafetyNet - Unlocked Bootloader + Android Pay

DISCLAIMER: Any guides/suggestions/workarounds posted here are to be taken at your own risk. Any bricks/lockouts/otherwise unusable devices are your own responsibility. No support will be provided, unless someone takes it upon themselves to help you out.
Situation:
Updates to Google's SafetyNet is checking for unlocked bootloader, if your bootloader is unlocked, SafetyNet will error, preventing you from being able to use Android Pay, even if you're on a stock, unrooted, but otherwise unlocked bootloader.
Problem:
Many of you might feel that you won't ever give up your custom ROMs, Mods, Xposed, etc., that you've grown to love and accept as the norm in the community (heck, that's why I've been using Nexus forever!), and some of you might even feel that you won't let Google dictate whats allowed/disallow on your device, and might try combination of solutions to try and get one up on Google, by locking your bootloader, and experiment trying to get Android Pay to work on a Custom ROM/etc.
Danger:
There is a very real risk that you might brick your device if you lock your bootloader while not using stock firmware.
Discussion:
I've been a member of this community for a while now, and while not a programmer, developer myself, I am more tech savvy then most of the people I surround myself with. Given this, I wanted to try and give back by proposing this thread, a place where many of you, more experienced, and less experienced, than myself can share their concerns, thoughts, solutions, theories, as how to safely get Android Pay working with our beloved custom ROMs/Mods with the new Google updates.
So please, feel free to brainstorm/propose/ponder below your thoughts/suggestions/theories/solutions to the above state issue. I will try and update this first post with anything that we determine below as safe course of this adventure(misadventure?).
I'll first link to some light reading by @Chainfire - http://forum.xda-developers.com/showpost.php?p=68424605&postcount=2 to give you an idea why all of this is happening.
Solutions/Theories/Tests:
Hoping I didn't just make a useless thread, on Chainfire's suhide thread, http://forum.xda-developers.com/apps/supersu/suhide-t3450396
did release (2016.10.07 - v0.54 - RELEASE NOTES- Fix for latest SafetyNet update) bypass unlocked bootloader check?
Ok, forward and onward.
Some of my concerns with locked bootloader:
1. - With a locked bootloader, a custom recovery (TWRP), and a custom ROM, a few things can go wrong, like ROM not booting, with OEM unlocking disallowed in developer options. Provided that you didn't set a pattern/work to boot device, (PIN is what I believe TWRP will only allow to unlock your partitions), or didn't set a lock at all, you should be able to boot into TWRP and format userdata/all partitions, flash another ROM, boot, check "OEM Unlocking" and be able to perform bootloader unlock command, correct?
2. What would happen in the same scenario as above, but if you had a stock bootloader, would it be more difficult to flash a ROM? would you be able to flash anything at all? Or even boot TWRP with a locked bootloader?
3. In my conversation with @Lawlrus in another thread, he mentioned that as long as you have debugging enabled on your ROM, you should be ok, I fail to see the point of this, because if you can boot into your ROM, can't you just toggle OEM unlocking in the first place?
A. A solution to keeping bootloader locked + having and updating a custom ROM?
1. Flash favorite ROM, set it up as you wish, install whatever you want, configure it as you want.
2. Enjoy ROM
3. Time to update ROM - Backup app data/messages using Titanium, or even Google's backup, whatever floats your boat.
4. Reboot into custom recovery, make a backup (without password/pin lock preferably).
5. Reboot into bootloader, unlock bootloader (this will wipe your data).
6. Restore nandroid backup (recovery backup you just made)
7. Flash updated ROM/Root/Mods/GApps/Whatever..
8. Relock bootloader.
9. Use Android Pay.
10. Profit.
What am I not seeing with this approach?
@Shemploo
You're correct you can just flip the switch. The point of it was being if you can't boot the ROM up due to it bootlooping for some reason
Lawlrus said:
@Shemploo
You're correct you can just flip the switch. The point of it was being if you can't boot the ROM up due to it bootlooping for some reason
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If you're not able to boot into ROM, having debugging enabled before it fails to boot has no bearing on ADB if you can access the custom recovery, IIRC.
In other words, being able to boot into a custom recovery like TWRP even with locked bootloader will give you ADB access to your partitions, provided that you didn't encrypt/lock your Android, and forgot the password.
Also, I think ADB would be very useful to have your PC communicate with TWRP for pulling/pushing files, which is important if you need to load a ROM in via TWRP so you can get back into your ROM, and check "OEM unlocking" allowing you to reboot into bootloader and use the bootloader unlock command.
I believe that TWRP ADB works irregardless of whether you have enabled debugging in OS, or not. The debugging in OS is only there for the OS's benefit.

Trouble unlocking Leagoo Z3C bootloader

Hi.
I have a problem when unlocking the bootloader in Leagoo Z3C device. Although I'm already set "OEM Unlocking" in Developer mode, when I'm running "fastboot oem unlock" inside bootloader gives a 3 dots and stuck there. Is there any way to unlock the bootloader of this kind of the device? Thanks.
amirzaim said:
Hi.
I have a problem when unlocking the bootloader in Leagoo Z3C device. Although I'm already set "OEM Unlocking" in Developer mode, when I'm running "fastboot oem unlock" inside bootloader gives a 3 dots and stuck there. Is there any way to unlock the bootloader of this kind of the device? Thanks.
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Mediatek powered devices do not require a bootloader unlock to be modded.
You can mostly root, install custom recoveries and install custom roms without unlocking the bootloader because it's most of the time never locked.
But this one is actually not the MTK chipset model, it's just a simply Spreadtrum chipset model. It' looks foolish but until now I have no idea on how to unlock it even rooting it...
Much harder to root compared to Lenovo A1000 which also uses same chipset but different Android version.
So...I finally managed to get the root access of Leagoo Z3C device. Just using magisk manager and patch the stock boot.img file and there you go...
amirzaim said:
So...I finally managed to get the root access of Leagoo Z3C device. Just using magisk manager and patch the stock boot.img file and there you go...
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Congratulations!
please help
guys please help me how to root and i want usb drive for leagoo z3c
bablilayoub said:
guys please help me how to root and i want usb drive for leagoo z3c
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You will need to install Google USB driver first, then go to this link here to download the necessary files for rooting the device. Just flash the rooted boot.img file and also install Magisk Manager as well.
thank you but i need custom recovery not root
bablilayoub said:
thank you but i need custom recovery not root
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Sorry, I don't provide it.
its ok

what are the benefits of unlocking bootloader??

Hey guys I wanted to know the benefits of unlocking the bootloader on my Nexus 5x device.
Any help will be appreciated. Thank You.
Bootloader is like security software for your device, it'll prevent your device from loading a Software or code which aren't properly signed. So, by unlocking it, you can do vice-versa.. You can load all stuff that aren't allowed by your bootloader.
In this term and simple words, by unlock bootloader, you can enable root access and flashing various custom Software/firmware to your device.
R324D said:
Bootloader is like security software for your device, it'll prevent your device from loading a Software or code which aren't properly signed. So, by unlocking it, you can do vice-versa.. You can load all stuff that aren't allowed by your bootloader.
In this term and simple words, by unlock bootloader, you can enable root access and flashing various custom Software/firmware to your device.
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Can I do this by only unlocking bootloader or is root access necessary. Also is there any way that my phone will be harmed by unlocking the bootloader
mufaddal25 said:
Can I do this by only unlocking bootloader or is root access necessary. Also is there any way that my phone will be harmed by unlocking the bootloader
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Yes it does, lije I said before, bootloader is factory security software to prevent your device from running malicious codes and software.
Unlocking bootloader is necessary to overwrite your stock recovery by custom recovery like TWRP, because stock recovery doesn't allow you to altering system partition.
I suggesting you to do more research before applying this process as it's can harm and possibly bricked your device.
R324D said:
Yes it does, lije I said before, bootloader is factory security software to prevent your device from running malicious codes and software.
Unlocking bootloader is necessary to overwrite your stock recovery by custom recovery like TWRP, because stock recovery doesn't allow you to altering system partition.
I suggesting you to do more research before applying this process as it's can harm and possibly bricked your device.
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Oh okay thanks

Unroot/lock bootloader without losing data

I have a rooted pixel 2 and an unlocked bootloader, but my company requires me to install MobileIron on my device. I can't seem to find a workaround for MobileIron, so it looks like I need to unroot and relock my bootloader.
1. Does anyone know how to get MobileIron up and running on a rooted device?
2. If no, can I unroot without losing any apps/data? I presume this should be possible, even though re-locking the bootloader might not be possible without losing the apps/data.
3. What about relocking the bootloader? I imagine it will be trickier than just going into developer options and unchecking the allow OEM unlocking box, but maybe that's all it takes?
Have you tired magisk hide? That's sytemless root and many security required apps are fooled by hiding root.
Unfortunately that doesn't work. Would uninstalling Magisk from inside the manager cause me to lose data?
No1ustad said:
I have a rooted pixel 2 and an unlocked bootloader, but my company requires me to install MobileIron on my device. I can't seem to find a workaround for MobileIron, so it looks like I need to unroot and relock my bootloader.
1. Does anyone know how to get MobileIron up and running on a rooted device?
2. If no, can I unroot without losing any apps/data? I presume this should be possible, even though re-locking the bootloader might not be possible without losing the apps/data.
3. What about relocking the bootloader? I imagine it will be trickier than just going into developer options and unchecking the allow OEM unlocking box, but maybe that's all it takes?
Click to expand...
Click to collapse
As far as your third question goes, to relock the bootloader, you don't uncheck allow OEM unlocking. You do the same as when you unlocked it. Plug it into your computer, boot to fastboot mode and, instead of typing fastboot flashing unlock, you type fastboot flashing lock. That's all there is to it. You want to be completely stock when you do it. Can't remember if it wipes the device though.
To unroot without losing your data, download the latest factory image, remove the -w in the flashall.bat file (don't forget to save it after you edit it) . Plug the phone into a computer and then run the flashall.bat file that you edited.

How can I root my MIUI11 Redmi 8A dual without unlocking bootloader?

Hello all xda members,
I am not new in rooting. I was rooting my phone since 2014. When KitKat and lollipop introduced. After I purchased the new redmi 8A dual, it's impossible to root with kingoroot and with others. So, I googled how to root Android 10 miui11. I found there is an app called magisk. So I installed it. Now, I searched more, I found that I have to unlock my bootloader in order to install custom recovery. I really don't wanna unlock my bootloader and custom recovery. I just wanna root for temporarily because I need to convert some application to sys apps.
Now,
I found that people doing another magisk way to root and is called 'patching boot image', . I patched my boot image and download the platform tool. Now, I am completely puzzled because I don't know what to do next! Some are saying I have unlock bootloader and some are rooting without unlocking bootloader.
If by patching boot image root is possible without bootloader then could you please write the steps! I am completely noob in magisk line.
Or,
Is there any way to root MIUI11 without unlocking bootloader? I really don't wanna loss my data.
Thanks for reading!
Riuzaki1230 said:
Hello all xda members,
I am not new in rooting. I was rooting my phone since 2014. When KitKat and lollipop introduced. After I purchased the new redmi 8A dual, it's impossible to root with kingoroot and with others. So, I googled how to root Android 10 miui11. I found there is an app called magisk. So I installed it. Now, I searched more, I found that I have to unlock my bootloader in order to install custom recovery. I really don't wanna unlock my bootloader and custom recovery. I just wanna root for temporarily because I need to convert some application to sys apps.
Now,
I found that people doing another magisk way to root and is called 'patching boot image', . I patched my boot image and download the platform tool. Now, I am completely puzzled because I don't know what to do next! Some are saying I have unlock bootloader and some are rooting without unlocking bootloader.
If by patching boot image root is possible without bootloader then could you please write the steps! I am completely noob in magisk line.
Or,
Is there any way to root MIUI11 without unlocking bootloader? I really don't wanna loss my data.
Thanks for reading!
Click to expand...
Click to collapse
Your only chance of rooting without unlocking bootloader is to find a universal rooting app or PC program that has an exploit that works on your device. But, I doubt that there is an app or PC program that can root your device, those stopped working on devices with android versions newer than Marshmallow.
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