Installing TWRP Samsung a20e - General Questions and Answers

I want to install TWRP to my Samsung a20e but I don't want to unlock my bootloader is it possible

jojoko0815 said:
I want to install TWRP to my Samsung a20e but I don't want to unlock my bootloader is it possible
Click to expand...
Click to collapse
No.
With a locked bootloader, non-factory images (boot, recovery, ...) are rejected.
Cheers.

ipdev said:
No.
With a locked bootloader, non-factory images (boot, recovery, ...) are rejected.
Cheers.
Click to expand...
Click to collapse
Thanks. Is it possible to lock the bootloader after unlocking it for the custom rom and twrp?

jojoko0815 said:
Thanks. Is it possible to lock the bootloader after unlocking it for the custom rom and twrp?
Click to expand...
Click to collapse
No.
You can only safely lock the bootloader once the device is back to factory original rom (system), boot, recovery, ...
That is why time is spent to finding ways around checking the sensitive [secure] device properties.
Using kdrag0n's Universal SafetyNet Fix for example.
Cheers.

Related

Not able to boot into recovery mode

My "Coolpad Note 3" is not booting into recovery mode after Flashing Cool ui 8 V22 Rom & TWRP Recovery. However Normally its booting absolutely fine and its quite stable Rom. But I seriously need to flash TWRP in order to install SuperSU and Xposed Installer. Anyone Please suggest any solution Asap.
(Also My Titanium Backup(Apps+Data) could only be restored after granting root access).
apalash16 said:
My "Coolpad Note 3" is not booting into recovery mode after Flashing Cool ui 8 V22 Rom & TWRP Recovery. However Normally its booting absolutely fine and its quite stable Rom. But I seriously need to flash TWRP in order to install SuperSU and Xposed Installer. Anyone Please suggest any solution Asap.
(Also My Titanium Backup(Apps+Data) could only be restored after granting root access).
Click to expand...
Click to collapse
Did you flash the correct recovery for your model number?
Have you tried flashing the recovery again?
I DO NOT PROVIDE HELP IN PM, KEEP IT IN THE THREADS WHERE EVERYONE CAN SHARE
Yes I Have flashed the correct recovery with SP FLASH TOOL (Mtk 6753 Scatter file). It shows that it will boot into recovery mode but again screen blanks and same process repeats.
apalash16 said:
Yes I Have flashed the correct recovery with SP FLASH TOOL (Mtk 6753 Scatter file). It shows that it will boot into recovery mode but again screen blanks and same process repeats.
Click to expand...
Click to collapse
Did you try booting to recovery using adb?
adb reboot recovery
Droidriven said:
Did you flash the correct recovery for your model number?
Have you tried flashing the recovery again?
I DO NOT PROVIDE HELP IN PM, KEEP IT IN THE THREADS WHERE EVERYONE CAN SHARE
Click to expand...
Click to collapse
-Hope- said:
Did you try booting to recovery using adb?
adb reboot recovery
Click to expand...
Click to collapse
No... I dont know the exact method for that.
https://forum.xda-developers.com/showthread.php?t=1853159
Is it the universal method?
apalash16 said:
Yes I Have flashed the correct recovery with SP FLASH TOOL (Mtk 6753 Scatter file). It shows that it will boot into recovery mode but again screen blanks and same process repeats.
Click to expand...
Click to collapse
Do you know of your bootloader was unlocked before you flashed the recovery?
If it was locked then that is why it won't boot to recovery.
I DO NOT PROVIDE HELP IN PM, KEEP IT IN THE THREADS WHERE EVERYONE CAN SHARE
---------- Post added at 07:38 PM ---------- Previous post was at 07:33 PM ----------
apalash16 said:
No... I dont know the exact method for that.
https://forum.xda-developers.com/showthread.php?t=1853159
Is it the universal method?
Click to expand...
Click to collapse
Yes, it's the same for all android.
adb reboot recovery
This still doesn't work if your bootloader was locked when you flashed your recovery.
If the bootloader was locked, you'll have to flash a copy of your stock recovery.
Then unlock the bootloader, then flash the recovery. It will probably work correctly then.
I DO NOT PROVIDE HELP IN PM, KEEP IT IN THE THREADS WHERE EVERYONE CAN SHARE
Droidriven said:
Do you know of your bootloader was unlocked before you flashed the recovery?
If it was locked then that is why it won't boot to recovery.
I DO NOT PROVIDE HELP IN PM, KEEP IT IN THE THREADS WHERE EVERYONE CAN SHARE
Click to expand...
Click to collapse
As I Know, Coolpad Note 3 comes with pre-unlocked bootloader. And Earlier I had TWRP installed in it with the same method. I dont think so The Bootloader was Locked as I Have flashed Cool Ui 8.....nd that was done quite easily.
apalash16 said:
As I Know, Coolpad Note 3 comes with pre-unlocked bootloader. And Earlier I had TWRP installed in it with the same method. I dont think so The Bootloader was Locked as I Have flashed Cool Ui 8.....nd that was done quite easily.
Click to expand...
Click to collapse
Ok, if you had TWRP on it before then it isn't locked.
Did you at any point create a nandroid backup while that version of TWRP was installed? Have you tried flashing that same version of TWRP?
I DO NOT PROVIDE HELP IN PM, KEEP IT IN THE THREADS WHERE EVERYONE CAN SHARE
Droidriven said:
Ok, if you had TWRP on it before then it isn't locked.
Did you at any point create a nandroid backup while that version of TWRP was installed? Have you tried flashing that same version of TWRP?
I DO NOT PROVIDE HELP IN PM, KEEP IT IN THE THREADS WHERE EVERYONE CAN SHARE
Click to expand...
Click to collapse
Have a look at screenshots....is this what u r asking about??
apalash16 said:
Have a look at screenshots....is this what u r asking about??
Click to expand...
Click to collapse
Yes, those are nandroid backups.
Can you flash the recovery that you used to create those backups? Or is that the same recovery that you're trying to flash now but can't get it to boot?
I DO NOT PROVIDE HELP IN PM, KEEP IT IN THE THREADS WHERE EVERYONE CAN SHARE
Droidriven said:
Yes, those are nandroid backups.
Can you flash the recovery that you used to create those backups? Or is that the same recovery that you're trying to flash now but can't get it to boot?
I DO NOT PROVIDE HELP IN PM, KEEP IT IN THE THREADS WHERE EVERYONE CAN SHARE
Click to expand...
Click to collapse
I dont remember the exact version of Twrp as its not officially available for my device. But ya..I had tried to flash 2-3 recovery.img 's (including the one which I flashed earlier). But no one worked...it just repeats the same process.
https://drive.google.com/file/d/0B_FSn054nUXkN2RudjQwSVBNY3M/view
apalash16 said:
As I Know, Coolpad Note 3 comes with pre-unlocked bootloader. And Earlier I had TWRP installed in it with the same method. I dont think so The Bootloader was Locked as I Have flashed Cool Ui 8.....nd that was done quite easily.
Click to expand...
Click to collapse
The device may have came with bootloader unlocked when you got it, but you flashed a stock update Cool UI 8, if that stock update came with a locked bootloader as part of the update package then your bootloader is locked now, and that would still explain why you can't flash or boot to TWRP.
Verify whether the Cool UI 8 v22 firmware itself came with an updated and locked bootloader. It has nothing to do with whether your device came with unlocked bootloader.
I DO NOT PROVIDE HELP IN PM, KEEP IT IN THE THREADS WHERE EVERYONE CAN SHARE
Droidriven said:
The device may have came with bootloader unlocked when you got it, but you flashed a stock update Cool UI 8, if that stock update came with a locked bootloader as part of the update package then your bootloader is locked now, and that would still explain why you can't flash or boot to TWRP.
Verify whether the Cool UI 8 v22 firmware itself came with an updated and locked bootloader. It has nothing to do with whether your device came with unlocked bootloader.
I DO NOT PROVIDE HELP IN PM, KEEP IT IN THE THREADS WHERE EVERYONE CAN SHARE
Click to expand...
Click to collapse
Ya I Have checked...Coolpad has locked bootloader for this firmvare version. What should I do now....Should I flash the earlier version of cool ui 8 or Is there any method to unlock ot manually?
(Ps: Not able to find Adb & Fastboot drivers for this device)
apalash16 said:
Ya I Have checked...Coolpad has locked bootloader for this firmvare version. What should I do now....Should I flash the earlier version of cool ui 8 or Is there any method to unlock ot manually?
(Ps: Not able to find Adb & Fastboot drivers for this device)
Click to expand...
Click to collapse
I'm not sure about the bootloader, I didn't find anything about unlocking bootloader for Cool UI 8 v22. Does it have a "OEM unlock" setting in system settings? If so, enable it and then see if you can flash/boot TWRP. Try fastboot with the following command:
fastboot oem unlock
But I did find something about how to root your device, if the information is correct. You might be able to root what you have then use FireFlash or Flashify to flash the Xposed Framework and get it working. You probably won't have unlocked bootloader or TWRP though.
But, you also might be able to downgrade to your previous firmware but I'm not sure if that will unlock your bootloader or not. The locked bootloader might not allow you to downgrade your firmware.
I DO NOT PROVIDE HELP IN PM, KEEP IT IN THE THREADS WHERE EVERYONE CAN SHARE
Droidriven said:
I'm not sure about the bootloader, I didn't find anything about unlocking bootloader for Cool UI 8 v22. Does it have a "OEM unlock" setting in system settings? If so, enable it and then see if you can flash/boot TWRP. Try fastboot with the following command:
fastboot oem unlock
But I did find something about how to root your device, if the information is correct. You might be able to root what you have then use FireFlash or Flashify to flash the Xposed Framework and get it working. You probably won't have unlocked bootloader or TWRP though.
But, you also might be able to downgrade to your previous firmware but I'm not sure if that will unlock your bootloader or not. The locked bootloader might not allow you to downgrade your firmware.
I DO NOT PROVIDE HELP IN PM, KEEP IT IN THE THREADS WHERE EVERYONE CAN SHARE
Click to expand...
Click to collapse
https://youtu.be/kad8GY_wWzk
I followed this method and successfully get the twrp installed and rooted my device. Thank You So Much To You too For Your Help Dude.

Relock bootloader for warranty

Hi, is It possible to relock bootloader for to have warranty back?
Thanks
once you flash the stock img, it will be locked again.
Till Nougat, we had dload method which locks it fully (other method for unlocking it would just re-lock it)
shashank1320 said:
once you flash the stock img, it will be locked again.
Till Nougat, we had dload method which locks it fully (other method for unlocking it would just re-lock it)
Click to expand...
Click to collapse
Hey, i am in the same situation and after flashing the stock rom + stock recovery my bootloader is still unlocked, and i still get that "This device has been unlocked and can't be trusted" screen on boot.
Is there any way to manually lock the bootloader?
Edit: i found this SRKTool and i was able to easily relock the bootloader. You need the Unlock code though and it resets your phone, so backup your data.
https://forum.xda-developers.com/mate-8/development/tool-srk-tool-huawei-t3369797 @alboz83
Arrandale said:
Hey, i am in the same situation and after flashing the stock rom + stock recovery my bootloader is still unlocked, and i still get that "This device has been unlocked and can't be trusted" screen on boot.
Is there any way to manually lock the bootloader?
Edit: i found this SRKTool and i was able to easily relock the bootloader. You need the Unlock code though and it resets your phone, so backup your data.
https://forum.xda-developers.com/mate-8/development/[email protected]
Click to expand...
Click to collapse
Yes it will only relock the bootloader but not lock. Anyone experienced with this can get this that you had unlocked your bootloader earlier
Arrandale said:
Hey, i am in the same situation and after flashing the stock rom + stock recovery my bootloader is still unlocked, and i still get that "This device has been unlocked and can't be trusted" screen on boot.
Is there any way to manually lock the bootloader?
Edit: i found this SRKTool and i was able to easily relock the bootloader. You need the Unlock code though and it resets your phone, so backup your data.
https://forum.xda-developers.com/mate-8/development/tool-srk-tool-huawei-t3369797 @alboz83
Click to expand...
Click to collapse
I relocked yesterday bootloader and my relocated easily. I can not find the update of stock firmware. Once found update. I clicked on update, update failed. I have not got the update since then. So I did relock. Very easy to relock. But my mobile update is not happening. Please give me some help
Sent from my [device_name] using XDA-Developers Legacy app
shashank1320 said:
once you flash the stock img, it will be locked again.
Till Nougat, we had dload method which locks it fully (other method for unlocking it would just re-lock it)
Click to expand...
Click to collapse
Many people say that if we flash stock rom the bootloader stay unlock. Or i have to flash in a particular mode?
With the tool i can relock but not lock, right?
alboz83 said:
Many people say that if we flash stock rom the bootloader stay unlock. Or i have to flash in a particular mode?
With the tool i can relock but not lock, right?
Click to expand...
Click to collapse
Yup
i Read somewhere that if u flash the stock rom using dload after u have relocked the bootloader, the bootloader status will change from relock to locked. does this work? can anyone try and confirm this? i want to make sure of this before i unlock. I would be greatful forever.
Thanks
Anzee said:
i Read somewhere that if u flash the stock rom using dload after u have relocked the bootloader, the bootloader status will change from relock to locked. does this work? can anyone try and confirm this? i want to make sure of this before i unlock. I would be greatful forever.
Thanks
Click to expand...
Click to collapse
Have tried to this more than 100 times and it works fine. It will be locked BL rather than relock
shashank1320 said:
Have tried to this more than 100 times and it works fine. It will be locked BL rather than relock
Click to expand...
Click to collapse
If u flash stock?
Thank you thank you thank you you're a life saver ♥
Anzee said:
If u flash stock?
Thank you thank you thank you you're a life saver ♥
Click to expand...
Click to collapse
Yes. Did you solve the BL state?
shashank1320 said:
Yes. Did you solve the BL state?
Click to expand...
Click to collapse
No I haven't even unlocked the bl yet. I just wanted to make sure it the relock to lock state was possible before I unlock. I will do so soon when I get some time.
Anzee said:
No I haven't even unlocked the bl yet. I just wanted to make sure it the relock to lock state was possible before I unlock. I will do so soon when I get some time.
Click to expand...
Click to collapse
Yes you can always do via full ota or flashing the stock firmware via dload. Not hard to do to retain warranty:silly:
shashank1320 said:
Have tried to this more than 100 times and it works fine. It will be locked BL rather than relock
Click to expand...
Click to collapse
But dload method not work only for a single update.app file? With view 10 there are 3 files
alboz83 said:
But dload method not work only for a single update.app file? With view 10 there are 3 files
Click to expand...
Click to collapse
Use the first file, update.zip. it will contain a update.app file around 3 GB. Can use this single file.
shashank1320 said:
Use the first file, update.zip. it will contain a update.app file around 3 GB. Can use this single file.
Click to expand...
Click to collapse
Really? And I have to install over the same firmware, not an update? For example, now I'm on 162 build with unlock bootloader. If I install only update.zip of 162 build with dload method, I obtain the lock bootloader?
alboz83 said:
Really? And I have to install over the same firmware, not an update? For example, now I'm on 162 build with unlock bootloader. If I install only update.zip of 162 build with dload method, I obtain the lock bootloader?
Click to expand...
Click to collapse
Yes.
hello all guys!
i have honor 10 (now col-l29)
before rebranding (col-tl10)
may i relock the BL safety?? i have official rom
ecsalos said:
hello all guys!
i have honor 10 (now col-l29)
before rebranding (col-tl10)
may i relock the BL safety?? i have official rom
Click to expand...
Click to collapse
Why you want to relock, to gain warranty?
If so, better dload the current firmware and it will lock it safely.
because, i dont want to see everytime when i reboot my phone,this stupid message, who tells me that i have unlock bl...
i have 8.1.0.151 (c432)
i was downloaded this version when im trying to rebranding.. for official site..
if i relock with this version, the worse scenario it will be...??? brick???
if i dload the current firmware, i will install it with TWRP again? and after it will be locked safety?
and what firmware i must to dload?

Bootloader Unlock For SOV37 Possible

Just in case anyone wondering. I have XZ2 AU (SOV37) with Bootloader unlock allowed : No
So I use qUnlocktool, paid some money for it (nugsm), and unlock the simlock (even though it's already unlocked to begin with)
And after that Bootloader unlock allowed : become Yes.
Then I flashed Android 10 global ROM, unlocked Bootloader, phone unable to receive signal.
From there all I have to do is just to restore the backup from qUnlocktool, as result I have unlocked Bootloader and unlocked SIM.
Hope this can help some people.
Though by flashing to Global / Custom ROM you will lose NFC. recommended to use debloater (magisk) to remove NFC related services to prevent battery drain.
seilent said:
Just in case anyone wondering. I have XZ2 AU (SOV37) with Bootloader unlock allowed : No
So I use qUnlocktool, paid some money for it (nugsm), and unlock the simlock (even though it's already unlocked to begin with)
And after that Bootloader unlock allowed : become Yes.
Then I flashed Android 10 global ROM, unlocked Bootloader, phone unable to receive signal.
From there all I have to do is just to restore the backup from qUnlocktool, as result I have unlocked Bootloader and unlocked SIM.
Hope this can help some people.
Click to expand...
Click to collapse
you can help me unlock xz2 bootloader unlock allowed : no
i seach file qunlocktool for all web but i can not file qunlocktool.exe , please help me
lethanh7849 said:
you can help me unlock xz2 bootloader unlock allowed : no
i seach file qunlocktool for all web but i can not file qunlocktool.exe , please help me
Click to expand...
Click to collapse
I bought it from this site, https://nugsm.com/product/sony-xperia-cable-unlock-0-counter-supported/
they also provide the software required for it
Yes it's possible, need to pay for service.
qunlock can do, even they only described as sim unlock.
Tried with SOV37 and 702SO
I bought from
https://s-unlock.com/
lethanh7849 said:
you can help me unlock xz2 bootloader unlock allowed : no
i seach file qunlocktool for all web but i can not file qunlocktool.exe , please help me
Click to expand...
Click to collapse
how to restore the backup file? I can find the backup file but there is no option for me to backup in qunlocktool
AnonymousSir said:
how to restore the backup file? I can find the backup file but there is no option for me to backup in qunlocktool
Click to expand...
Click to collapse
this is the one I used to restore
https://link.seilent.net/bTLuCq
seilent said:
this is the one I used to restore
https://link.seilent.net/bTLuCq
Click to expand...
Click to collapse
Thanks. After restore backup I was able to get signal working. Was struggling on how to get my signal back previously.
Thank you so much !
seilent said:
Just in case anyone wondering. I have XZ2 AU (SOV37) with Bootloader unlock allowed : No
So I use qUnlocktool, paid some money for it (nugsm), and unlock the simlock (even though it's already unlocked to begin with)
And after that Bootloader unlock allowed : become Yes.
Then I flashed Android 10 global ROM, unlocked Bootloader, phone unable to receive signal.
From there all I have to do is just to restore the backup from qUnlocktool, as result I have unlocked Bootloader and unlocked SIM.
Hope this can help some people.
Click to expand...
Click to collapse
I tried unlocking an Xperia XZ2 SOV37 with qUnlocktool and it worked. It showed Bootloader unlock allowed: Yes, and then I proceeded to unlock bootloader with fastboot command. However this error showed up:
FAILED (remote: Command did not succeed)
Click to expand...
Click to collapse
I tried on both AU stock rom as well as lastest android 10 UK Customized (H8216_52.1.A.3.49-R8C_Customized UK) but both failed to unlock bootloader.
Can you help me solve this problem? Which global rom did you flash?
vit12345 said:
I tried unlocking an Xperia XZ2 SOV37 with qUnlocktool and it worked. It showed Bootloader unlock allowed: Yes, and then I proceeded to unlock bootloader with fastboot command. However this error showed up:
I tried on both AU stock rom as well as lastest android 10 UK Customized (H8216_52.1.A.3.49-R8C_Customized UK) but both failed to unlock bootloader.
Can you help me solve this problem? Which global rom did you flash?
Click to expand...
Click to collapse
in my case im using the latest global one H8216_Vodafone Global_52.1.A.3.49-R9C
Is it possible if someone could share their id and password for the software.
LineArc said:
Is it possible if someone could share their id and password for the software.
Click to expand...
Click to collapse
Not possible. Because it's paid.
AnonymousSir said:
Not possible. Because it's paid.
Click to expand...
Click to collapse
Price?
Hey i unlocked the bootloader. But unable to flash lineage os using Twrp/ lineage recovery. It always ended up in error. Should i flash global rom before installing lineage os?
seilent said:
this is the one I used to restore
https://link.seilent.net/bTLuCq
Click to expand...
Click to collapse
Hi,,can u share ur backup file?,i already unlock with qunlock but when restore backup file,,my simcard still not detect,,at least let me try your backup file,,if my phone not boot i just restore my backup again to boot up,,thanks
saraththaliyil said:
Hey i unlocked the bootloader. But unable to flash lineage os using Twrp/ lineage recovery. It always ended up in error. Should i flash global rom before installing lineage os?
Click to expand...
Click to collapse
You must start from last stock rom on both slot,,
LineArc said:
Price?
Click to expand...
Click to collapse
19,95 poundsterling
I successfully installed lineage os after flashing global rom.
saraththaliyil said:
I successfully installed lineage os after flashing global rom.
Click to expand...
Click to collapse
Hi! How did you do it? I cant figure it out how to install lineage os after flashing my phone to global rom, thank you.
xperiaxz2 said:
Hi! How did you do it? I cant figure it out how to install lineage os after flashing my phone to global rom, thank you.
Click to expand...
Click to collapse
Did you unlock the bootloader?
saraththaliyil said:
Did you unlock the bootloader?
Click to expand...
Click to collapse
sir where i can get unlock bootloader?

oneplus 8t unroot + get back to stock

Hi,
I am currently on A11 with Oneplus 8T and unlocked bootloader + rooted stock rom.
What is the proper process to lock the bootloader and to get back the stock rom? What are the options?
Can I just factory reset the device?
Thanks,
2019registered said:
Hi,
I am currently on A11 with Oneplus 8T and unlocked bootloader + rooted stock rom.
What is the proper process to unlock the bootloader and to get back the stock rom? What are the options?
Can I just factory reset the device?
Thanks,
Click to expand...
Click to collapse
You're confusing us
You're already unlock+root
Then again ask for unlock BL!
If you want just stock then flash boot from stock that's it nothing else to do
@Mr Hassan sorry, I have just edited the first post. I want to LOCK the bootloader and get fully back to an unrooted stock rom.
2019registered said:
@Mr Hassan sorry, I have just edited the first post. I want to LOCK the bootloader and get fully back to an unrooted stock rom.
Click to expand...
Click to collapse
That's simple just flash stock rom or boot and relock it
2019registered said:
@Mr Hassan sorry, I have just edited the first post. I want to LOCK the bootloader and get fully back to an unrooted stock rom.
Click to expand...
Click to collapse
Install the latest rom for your phone from the OnePlus support site using local install. That will overwrite the Magisk patched boot you currently have installed.
After the phone reboots (you'll see that Magisk shows it's not installed) then boot into bootloader and use fastboot oem lock
Then select NO (yes, this is a bug in the OOS bootloader) and that should wipe your phone and bring it up with the bootloader locked.
if you want the easiest fastest way, just use the msm tool for the correct model.
ps. if you dont care about losing your data

Will I get a brick if I lock bootloader with an old stock ROM?

I want to relock bootloader, but will I get brick if I lock bootloader with old stock ROM installed on device?
Look inside here:
Lock BootLoader after Rooting?
Thanks for taking time to read my query. I was wondering if I've to lock boot-loader after rooting ( I just rooted my Oero) and before looking can I take everything backup on titanium backup and then restore everything after locking ? I'm I...
forum.xda-developers.com
jwoegerbauer said:
Look inside here:
Lock BootLoader after Rooting?
Thanks for taking time to read my query. I was wondering if I've to lock boot-loader after rooting ( I just rooted my Oero) and before looking can I take everything backup on titanium backup and then restore everything after locking ? I'm I...
forum.xda-developers.com
Click to expand...
Click to collapse
I know that if I install modified ROM and lock bootloader I will get a brick. But will I get a brick if i install official (stock) ROM but old version and then lock bootloader? For example, I installed stock ROM (not modified) with Android 10, but the latest is Android 11 then I locked bootloader. Will I get a brick?
jwoegerbauer said:
Look inside here:
Lock BootLoader after Rooting?
Thanks for taking time to read my query. I was wondering if I've to lock boot-loader after rooting ( I just rooted my Oero) and before looking can I take everything backup on titanium backup and then restore everything after locking ? I'm I...
forum.xda-developers.com
Click to expand...
Click to collapse
The question is, can I lock the bootloader with the old version of the official firmware installed without getting a brick. Because the old version of the firmware works smoother.
Locking a bootloader doesn't affect ROM actually installed: Lock or Unlock will wipe your data, that's all.
jwoegerbauer said:
Locking a bootloader doesn't affect ROM actually installed: Lock or Unlock will wipe your data, that's all.
Click to expand...
Click to collapse
So can I install old version of fw? I heard something about rollback protection.
Oybek78 said:
So can I install old version of fw? I heard something about rollback protection.
Click to expand...
Click to collapse
You still, or I didn´t find, that you mention the model of your device, that´s matter to have the right answer.
Also, it depends on which method you used to flash the ROM, if you officially, flashed the ROM, and the rollback didn´t affect your device, then it won´t do, locking or unlocking it.
Oybek78 said:
So can I install old version of fw? I heard something about rollback protection.
Click to expand...
Click to collapse
The stock ROM can be installed on the phone at any time. Mostly via ADB / Fastboot tools.
SubwayChamp said:
You still, or I didn´t find, that you mention the model of your device, that´s matter to have the right answer.
Also, it depends on which method you used to flash the ROM, if you officially, flashed the ROM, and the rollback didn´t affect your device, then it won´t do, locking or unlocking it.
Click to expand...
Click to collapse
My phone is Sony Xperia 1 J9110. I flashed it officially to the latest ROM through settings. Then I unlocked the bootloader and flashed the old stock ROM via newflasher. Then I decided to relock the bootloader with old stock ROM installed. Does this mean that I will get my phone bricked if I lock the bootloader with old stock ROM actually installed?
jwoegerbauer said:
The stock ROM can be installed on the phone at any time. Mostly via ADB / Fastboot tools.
Click to expand...
Click to collapse
But can I lock the bootloader with old stock ROM installed?
I saw somewhere that if you lock the bootloader with the old firmware version, you may get brick. But I'm not sure about that.
Why steadily repeat your posts?
FYI: I hereby opt out of this thread.
jwoegerbauer said:
Why steadily repeat your posts?
FYI: I hereby opt out of this thread.
Click to expand...
Click to collapse
Because you answered me
Oybek78 said:
My phone is Sony Xperia 1 J9110. I flashed it officially to the latest ROM through settings. Then I unlocked the bootloader and flashed the old stock ROM via newflasher. Then I decided to relock the bootloader with old stock ROM installed. Does this mean that I will get my phone bricked if I lock the bootloader with old stock ROM actually installed?
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Yes, always that you flash a stock ROM, you can re-lock it, fastboot will erase the data as a security measurement.

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