Unlock bootloader without oem unlock - Samsung Galaxy S9 Questions & Answers

Hi I lost my phone but my phone is locked with samsung id. Just wondering if any one can install custom recovery and custom rom without unlocking or if bootloader can be unlocked using adb or fastboot?

Sukhman Bajwa said:
Hi I lost my phone but my phone is locked with samsung id. Just wondering if any one can install custom recovery and custom rom without unlocking or if bootloader can be unlocked using adb or fastboot?
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no

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[Q] Why do I have to unlock the bootloader to root my Play?

I didnt unlock the bootloader of my last phone and I rooted it and flashed EVERY rom.
I want to flash rims and stuff but I got to unlocked the bootloader of my new and I don't want to.
If my last phone's bootloader was locked p, why can't the Play stay locked?
You don't need an unlocked bootloader to root (for most roms). You do need an unlocked bootloader to flash to the boot partition, seeing as the PLAY has no dedicated recovery partition. As such, no roms that require a different kernel will work on a locked bootloader
jacklebott said:
You don't need an unlocked bootloader to root (for most roms). You do need an unlocked bootloader to flash to the boot partition, seeing as the PLAY has no dedicated recovery partition. As such, no roms that require a different kernel will work on a locked bootloader
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Thanks

How to lock bootloader and sim for warranty?

I need to simlock adn bootloader lock my phone for warranty,is there a tutorial how to do this?
I don't think SIM lock is required for warranty.
Give us a little bit more info, do you have a custom recovery installed? Custom Rom? If not and the only thing you have to do is lock the bootloader then the command is
Fastboot oem lock
Note: don't do this with a custom Rom or custom recovery it will result in a bootloop. For completely stock you need
Stock rom
Stock boot.img
Stock recovery.img
Locked or relocked (warranty)
Sent from my HTC One X using xda app-developers app
Stefan0vic said:
I don't think SIM lock is required for warranty.
Give us a little bit more info, do you have a custom recovery installed? Custom Rom? If not and the only thing you have to do is lock the bootloader then the command is
Fastboot oem lock
Note: don't do this with a custom Rom or custom recovery it will result in a bootloop. For completely stock you need
Stock rom
Stock boot.img
Stock recovery.img
Locked or relocked (warranty)
Sent from my HTC One X using xda app-developers app
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I have custom recovery ClockworkMod Recovery v5.8.4.0
custom rom android revolution hd 18.2
cid htc__032
hboot 1.39.0000
Only thing you can do is install the stock rom and the stock recovery, RELOCK the bootloader. Lock is NOT possible
Off:can't login to that account.
I did restore stock room with ruu.
Is there any way to lock network ?i unlocked it using imei code.
Nimerod said:
Off:can't login to that account.
I did restore stock room with ruu.
Is there any way to lock network ?i unlocked it using imei code.
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You must to relock only the bootloader the sim is not important for warranty
Thant said:
You must to relock only the bootloader the sim is not important for warranty
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Vodafone say will void my warranty if phone is network unlocked.
Nimerod said:
Vodafone say will void my warranty if phone is network unlocked.
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Are you take the code from them or you take the code from some website? You can't lock the sim but you can try to send the phone with sim unloked and hope they will not see this. And something else Vodafone not repear OneX they send the phone to some other service I think!

[Q] bootloader unlock = yes and bootloader unlock allowed = yes are same?

so it is the same things or bootloader unlock = yes means your BL is unlocked.
and bootloader unlock allowed = yes mean you can unlock your bootloader.
im confused and i tried to unlock my bootloader, all data get wiped but i don't know whether its unlocked or not?
in service menu bootloader status show bootloader unlock = yes.
i also checked on my friends xperia ray, on his mobile it showing bootloader unlock allowed = yes.
It's pretty literal, except there's a bit of wrong grammar...
Bootloader unlock allowed: Yes - This means the bootloader is not unlocked but you are allowed to unlock the bootloader.
Bootloader unlock: Yes - This means the bootloader is unlocked.
Bootloader unlock allowed: No - This means the bootloader is not unlocked and you cannot unlock the bootloader.
alvinhochun said:
It's pretty literal, except there's a bit of wrong grammar...
Bootloader unlock allowed: Yes - This means the bootloader is not unlocked but you are allowed to unlock the bootloader.
Bootloader unlock: Yes - This means the bootloader is unlocked.
Bootloader unlock allowed: No - This means the bootloader is not unlocked and you cannot unlock the bootloader.
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ok.. and please help me to install cwm recovery.
i download your latest cwm file..extract it
then how can i extract boot image?
please help..
and can i install CM11 with you cwm recovery?
because in CM11 thread i saw that you cant install CM11 through alvins cwm.
ok.. and please help me to install cwm recovery.
i download your latest cwm file..extract it
then how can i extract boot image?
please help..
and can i install CM11 with you cwm recovery?
because in CM11 thread i saw that you cant install CM11 through alvins cwm.
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and can i install CM11 with you cwm recovery? - No! For CM flash the boot.img from the CM Zip.(boot.img is the CM kernel + CWM recovery)
then how can i extract boot image- Download boot image,start Flashtool,click on the flashlight and select Fastbootmod.Shutdown your phone,press and hold Vol+ key and connect usb cable to your phone(led light will turn blue light).Now from flashtool chose "Select kernel to flash" and flash boot.img fille who you want.
three is a YouTube video of the whole process in the original thread

S-on but unlocked. What can I do with it?

Hi there, XDA. So as the title says, my phone status in bootloader is unlocked, but s-on. I know I've done this a year ago or so. Now I'm on a custom rom and I plan to go back to Oreo stock firmware because I want to install Lee Droid.
So the main question is after I install the firmware(zip + SD card) can I root the device and reinstall TWRP even if I'm not s-off?
Does the unlock status means my bootloader is unlocked?
Sent from my HTC 10 using Tapatalk
NEO2598 said:
Hi there, XDA. So as the title says, my phone status in bootloader is unlocked, but s-on. I know I've done this a year ago or so. Now I'm on a custom rom and I plan to go back to Oreo stock firmware because I want to install Lee Droid.
So the main question is after I install the firmware(zip + SD card) can I root the device and reinstall TWRP even if I'm not s-off?
Does the unlock status means my bootloader is unlocked?
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Yes, you can install twrp and root with your unlocked bootloader
Tarima said:
Yes, you can install twrp and root with your unlocked bootloader
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Appreciate this, thanks a lot.
Sent from my HTC 10 using Tapatalk

fastboot relock, locks device

Hello Guys,
i have a redmi 5a and i made a rollback on rom from 10 to 9.
i had to unlock the bootloader and install previous verson of miui.
i could done that succesfully.
but i also installed twrp and root.
now i want to relock bootloader but when i do it via adb
not just the bootloader locks but the whole device too
and the phone does not start.
then i go back to fastboot and unlock the device with miflash unlock
and it works again but the bootloader is still open
what did i do wrong?
It's possible to relocked your device after rooting but relock the bootloader means locking the mod of your device, you'll lose your root. And again, if you need to root your device, you need to open the bootloader.
U cant relock the bootloader with custom recovery coz phone it doesnt start and maybe hard brick.always relock bootloader with stock recovery.also consider relocking,because u maybe cant unlock again until unofficial way found
Sent from my Redmi 5A using XDA Labs

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