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[Exynos] How to Unlock the Bootloader

Hi Guys!
The S7 ( Exynos 8890 variant ) is my first Samsung Device and while it works really well I'm just not sure on how to Unlock the Bootloader. With my previous Sony Devices you can just visit Sony's website and get done with it but after asking some friends they told me to just enable the OEM Unlock button. Is enabling gonna let me flash custom ROMs / recoveries and custom kernels? They also told me to be careful about flashing custom bootloaders (?)
If someone can just kindly explain on what this is or how will I unlock the bootloader it would be really appreciated
Thanks alot!!

Revontheus said:
Hi Guys!
The S7 ( Exynos 8890 variant ) is my first Samsung Device and while it works really well I'm just not sure on how to Unlock the Bootloader. With my previous Sony Devices you can just visit Sony's website and get done with it but after asking some friends they told me to just enable the OEM Unlock button. Is enabling gonna let me flash custom ROMs / recoveries and custom kernels? They also told me to be careful about flashing custom bootloaders (?)
If someone can just kindly explain on what this is or how will I unlock the bootloader it would be really appreciated
Thanks alot!!
Click to expand...
Click to collapse
Hi Mate
To OEM unlock is very easy on the exynos models . only the Qualcomm ( US variant) is kind of tricky in our model is allow to do it with the click of a button , you have to:
Go to Settings / About device / Software info / Tap 7 times on Build number to enable Developer
Once developer options are enable ( you will see it under Settings) enter there you will see the option OEM Enable, if you are planing to root or flash any custom rom or recovery you need to enable it , flashing with out enabling this option is risky
Flashing is always risky but if you follow the instructions should no be a problem

MAX 404 said:
Hi Mate
To OEM unlock is very easy on the exynos models . only the Qualcomm ( US variant) is kind of tricky in our model is allow to do it with the click of a button , you have to:
Go to Settings / About device / Software info / Tap 7 times on Build number to enable Developer
Once developer options are enable ( you will see it under Settings) enter there you will see the option OEM Enable, if you are planing to root or flash any custom rom or recovery you need to enable it , flashing with out enabling this option is risky
Flashing is always risky but if you follow the instructions should no be a problem
Click to expand...
Click to collapse
That's it? No more bootloader to unlock? Or is it because the exynos variants come with unlocked bootloaders thanks

Revontheus said:
That's it? No more bootloader to unlock? Or is it because the exynos variants come with unlocked bootloaders thanks
Click to expand...
Click to collapse
That is it mate..........exynos variants they have the unlock option

Isnt there the knox varranty flag, too? As it was there on earlier devices, it should be present on s7.
Root with 0x0 would be nice, but impossible, or? My s5 is not root friendly and I dont wanna lose my 0x0 state... So our S7 has also this behaviour of triggering the knox flag, I guess.
Bad times for having root on sammies phones...
Gesendet von meinem SM-G900F mit Tapatalk

Sorry to resurrect a dead thread, but I'm having a weird issue. So, I got my S7 a few days ago used, and discovered that the previous owner had already tripped Knox so I figured I might as well root to have all the various benefits. Well, I got a bit too impatient and rushed through the procedure I was reading, so I ended up rooting without changing the OEM Unlock option in Developer Options. Root was still successful and I have SuperSU installed and a few other root apps installed, all working fine. But once I realized I hadn't enabled OEM Unlock, I figured I would just go back into settings and change it.....except it's not there. The option is simply gone from Developer Options, even though I KNOW I saw it in there sometime before rooting.
Can anyone help me? I want to flash TWRP but I'm afraid to do so without having checked that option, and I don't understand why it disappeared from the menu!

Guys,
A quick question. Did anyone try flashing AOSP based roms on this device? I do a research before purchasing it. I love Lineage OS and wondering if this Exynos model works well with it.

dego_ said:
Guys,
A quick question. Did anyone try flashing AOSP based roms on this device? I do a research before purchasing it. I love Lineage OS and wondering if this Exynos model works well with it.
Click to expand...
Click to collapse
Quick answer:
Imho it does NOT work well.
Severe BT bugs.

OEM Unlock Greyed out
My OEM unlock setting under developers options is greyed out. I think it might be because of the motherboard replacement i got. Anyway to fix it?

ay0503 said:
My OEM unlock setting under developers options is greyed out. I think it might be because of the motherboard replacement i got. Anyway to fix it?
Click to expand...
Click to collapse
My dad's S7 edge had this issue when I was trying to flash lineage OS on it for him. I re-flashed the original firmware (Had a HK version but phone was repaired once in the US) and using odin and that fixed it for him at least. Not sure if it was a different firmware issue or just some bug.

Samsung galaxy j3 prime sm-j327t1

Does anyone have any development on this device? It's newer and running a droid 7.0 nougat. Any root info or bootloader unlock info would be greatly appreciated

I too am looking, upgraded from the smj320a, gotta day love the phone just needs root do I can retire my older one.
Side note, I noticed oem unlock is missing. Haven't been able to find a reason or answer.

Yeah I seen that too. I was thinking about trying the custom recovery twrp for the galaxy emerge which has the same board and specs as the j3 prime except it's running marshmallow. If I flash it that might work but then it will trip the frp lock and the phone will be soft bricked. It's hopeless with a locked bootloader

Well, frp bypass is kind of my new found hobby. Have locked 10 devices and bypassed them all, one was a new found bypass on the lg tribute 5 running that 5.1.1. So if you frp I can help. Can we tag people in these like that crap spy social network site? Aka FB. Because I do know someone who could possibly help.

I too would also like to root this phone. T-Mobile variant.

How do we go about getting the sm-j327t1 it's own set of development threads?

bobbyp1086 said:
Well, frp bypass is kind of my new found hobby. Have locked 10 devices and bypassed them all, one was a new found bypass on the lg tribute 5 running that 5.1.1. So if you frp I can help. Can we tag people in these like that crap spy social network site? Aka FB. Because I do know someone who could possibly help.
Click to expand...
Click to collapse
Frp is not locked as I have not tried to flash a recovery but I know if will lock if I flash my device with the bootloader locked

mrmack44240 said:
Frp is not locked as I have not tried to flash a recovery but I know if will lock if I flash my device with the bootloader locked
Click to expand...
Click to collapse
I did some digging and
https://forum.xda-developers.com/honor-5x/help/unlock-bootloader-issues-kiw-t3411032
Idk if that's what we're looking at so far only lead to it tho
Also did some digging with shortcut master found some interesting things

Adb shell getprop shows 1 for oem unlock ability

bobbyp1086 said:
Adb shell getprop shows 1 for oem unlock ability
Click to expand...
Click to collapse
At the same time it says it's not allowed check pictures

Also found this,
https://www.google.com/url?sa=t&sou...RE0Emhghh1sYy7IZw&sig2=DRKv6ALTtyfnCCjjE-CzgQ
Verified boot. Maybe a root that takes affect after boot. Like a temp boot, an on and off switch type root.

bobbyp1086 said:
At the same time it says it's not allowed check pictures
Click to expand...
Click to collapse
I don't own this device, but according to what I can gather, it seems that FRP can be OEM unlocked, but the property is not set hence the property set to 0 for sys.oem_unlock_allowed.
For why it doesn't appear in dev settings I think is another issue. Can anyone confirm that this device does NOT have a manufactuerer locked bootloader.
Just to clarify:
OEM unlock = disable Googles FRP lock not unlock the bootloader.
If this device has a manufacturer locked bootloader then the likelyhood of root for this device is minimal.

ashyx said:
I don't own this device, but according to what I can gather, it seems that FRP can be OEM unlocked, but the property is not set hence the property set to 0 for sys.oem_unlock_allowed.
For why it doesn't appear in dev settings I think is another issue. Can anyone confirm that this device does NOT have a manufactuerer locked bootloader.
Just to clarify:
OEM unlock = disable Googles FRP lock not unlock the bootloader.
If this device has a manufacturer locked bootloader then the likelyhood of root for this device is minimal.
Click to expand...
Click to collapse
How can I check it?
Also while roaming through a shortcut creator I noticed frp is an option in many of the secret menu settings, what ever happened to temp root?

bobbyp1086 said:
How can I check it?
Also while roaming through a shortcut creator I noticed frp is an option in many of the secret menu settings, what ever happened to temp root?
Click to expand...
Click to collapse
Do you have the stock firmware?

ashyx said:
Do you have the stock firmware?
Click to expand...
Click to collapse
Yes Sir only a week old

bobbyp1086 said:
Yes Sir only a week old
Click to expand...
Click to collapse
The easiest way would be to simply remove the signature from the stock recovery image and then see if it flashes with odin. If it does the bootloader isn't locked. If it fails then it's highly likely to be locked.

ashyx said:
The easiest way would be to simply remove the signature from the stock recovery image and then see if it flashes with odin. If it does the bootloader isn't locked. If it fails then it's highly likely to be locked.
Click to expand...
Click to collapse
English? I have Odin, then what

I found an article saying for oem unlock to factory reset and don't set up Google, no frp to stop oem unlock. I'm backing up apps now will update in a few hours

bobbyp1086 said:
I found an article saying for oem unlock to factory reset and don't set up Google, no frp to stop oem unlock. I'm backing up apps now will update in a few hours
Click to expand...
Click to collapse
That sounds promising

Yes I didn't set a screen lock as from what I've learned that's what activates frp, unfortunately my laptop has crashed (anyone good at bios pm me) but still no oem unlock and adb isn't working now, pc at work I've got android studios downloaded but I'll refrain from the lock until I can check, still don't know how to pull a signature from a stock image tho... But also in that article it States that oem unlock was enabled even tho there was no setting but they had unlocked boot loaders

Root Samsung Galaxy J7 SM-J727V

Hey XDA. I need a little help. I tried CF Auto Root for this device, and it didn't work. It just fails. I have run as Odin as administrator, and tried different USB ports and tried different cords, NOTHING WORKS. Please help. This is the Verizon variant of the J7. It runs Android Nougat 7.0 and has the July 1, 2017 security patch. Knox version is in the screenshots.

Jacobgacs said:
Hey XDA. I need a little help. I tried CF Auto Root for this device, and it didn't work. It just fails. I have run as Odin as administrator, and tried different USB ports and tried different cords, NOTHING WORKS. Please help. This is the Verizon variant of the J7. It runs Android Nougat 7.0 and has the July 1, 2017 security patch. Knox version is in the screenshots.
Click to expand...
Click to collapse
A little help would be very much appreciated.

Jacobgacs said:
A little help would be very much appreciated.
Click to expand...
Click to collapse
Bro you have to unlock the oem unlock toggle on the developer settings on your phone in order to use c.f. auto root but I notice that the verizon wireless don't have that option to unlock the bootloader

williejack619 said:
Bro you have to unlock the oem unlock toggle on the developer settings on your phone in order to use c.f. auto root but I notice that the verizon wireless don't have that option to unlock the bootloader
Click to expand...
Click to collapse
So, I really don't have any options?

I'm in the same spot with this phone. I found instructions online to root it but all mention the enabling OEM unlock, which the phone doesn't have. I guess either these online instructions are clickbait or the Verizon version is different. Does anyone have any ideas how to root this?

IglooJohnson said:
I'm in the same spot with this phone. I found instructions online to root it but all mention the enabling OEM unlock, which the phone doesn't have. I guess either these online instructions are clickbait or the Verizon version is different. Does anyone have any ideas how to root this?
Click to expand...
Click to collapse
I too have a similar issue only i cant get to developer mode to change oem lock or bypass the frp lock... j727p boost phone All Frp methods involve setting debugging and real term doesn't work either because when i can get it to dial out there is no option for adding new contact or even sending a message.. Seems its all been updated out of existence?

Virgin mobile galaxy J727P
Badazz Mofojoe said:
I too have a similar issue only i cant get to developer mode to change oem lock or bypass the frp lock... j727p boost phone All Frp methods involve setting debugging and real term doesn't work either because when i can get it to dial out there is no option for adding new contact or even sending a message.. Seems its all been updated out of existence?
Click to expand...
Click to collapse
Go into about phone keeps pressing build number you should have it after that on boost !! Verizon bootloader is locked !!

ohk
so conclusion there is no way to root the sm727v?. hm. that's a waste.

You can do bootloader
To do bootloader, you need to turn off the phone, then hold power, volume up and home, and release power when you see the version info thta normally appears. The system will say that it is updating, but just wait.

Actually if you get into the phone settings and look for Carrier unlock you can call Verizon and get number I believe that's how you unlock the bootloader if I'm wrong please correct me I'm still kinda new at this so let me know

What do you mean by "carrier unlock"?
Edit: Thats to unlock the carrier lock, as in, the lock preventing sims from other carriers from working.

Have you figured this out yet?
Jacobgacs said:
Hey XDA. I need a little help. I tried CF Auto Root for this device, and it didn't work. It just fails. I have run as Odin as administrator, and tried different USB ports and tried different cords, NOTHING WORKS. Please help. This is the Verizon variant of the J7. It runs Android Nougat 7.0 and has the July 1, 2017 security patch. Knox version is in the screenshots.
Click to expand...
Click to collapse
I'm having the same problem I tried using Odin with C.F. root and can't it fails and it with root

Question Is the SM-A125U different?

Is my A12 (a125u) different and unable to be bl unlocked/rooted, etc? It has OEM unlock in dev options....?

Did you figure this out? Looking to do the same... Also can't find a firmware for it, please share what you did if you had success. Thanks!

robles4242 said:
Is my A12 (a125u) different and unable to be bl unlocked/rooted, etc? It has OEM unlock in dev options..?
Click to expand...
Click to collapse
Yes, the A125U has OEM UNLOCK in the developer options......you can turn that ON by going into : settings > about phone > software information ...and then tap BUILD NUMBER several times until you see that you have enabled "developer options". Then you go into developer options and turn on OEM UNLOCKING.
Before updating firmware recently OEM UNLOCKING was greyed out. But now I can switch it on. Now the question is, can this variant be properly bootloader unlocked and rooted. The known repository for downloadable firmwares for Samsung phones DOES NOT seem to have this variant firmware for download. And I wonder if that is required for this to be properly rooted.

Galaxy firmware has the firmware for this variant. I have the att version and I can't seem to unlock the bootloader. Holding volume up in the download screen does nothing. Any luck?

Bump, I have all same questions.... Anyone figure anything out?

Before I had tmo Sim unlock my phone the I set the oen unlock to unlock now its not there at all

Anybody rooted this yet ?

anyone know the interchangeability of the firmware between the a125u and other versions

I wish to know as well

What if the OEM unlock not showing how do you get it to show

fabrizioluraghi said:
anyone know the interchangeability of the firmware between the a125u and other versions
Click to expand...
Click to collapse
I'd like to know this too. I believe the internal are all the same for the MediaTek devices. I got a SM-A125F for free and want to use it in the US. It looks like I could if I can convert it to SM-A125U or MS-A125M. I already bricked it once trying to flash U firmware and has to flash back to F
Will Samsung Galaxy A12 work in USA?
In this page we are going to show you the compatibility of Samsung Galaxy A12 with the mobile networks of USA and with the telephony operators that provide service in USA.
www.kimovil.com

i was able to root this sm-a125u very easily... downloaded A125WVLS3AUL1 firmware (canadian unlocked) flash the full stock rom and was able to unlock bootloader as simple as holding down all buttons when going into download mode, it unlocked it that way and was able to flash twrp, magisk and its all good

I have a similar issue but vice versa. I bought a US version (SM-A125U1) only to find out months after that the dual sim option is locked and i think the only way to unlock it is changing the firmware. Now I need help to know what I can do to, please.

exnfox said:
i was able to root this sm-a125u very easily... downloaded A125WVLS3AUL1 firmware (canadian unlocked) flash the full stock rom and was able to unlock bootloader as simple as holding down all buttons when going into download mode, it unlocked it that way and was able to flash twrp, magisk and its all good
Click to expand...
Click to collapse
Thanks for the info.
-Was there an "OEM UNLOCK" option in the Developer's Options?
-What did you do in DOWNLOAD mode to unlock?

sirrooke said:
Thanks for the info.
-Was there an "OEM UNLOCK" option in the Developer's Options?
-What did you do in DOWNLOAD mode to unlock?
Click to expand...
Click to collapse
Yes it was in the developer settings to oem unlock... then download said volume up continue. voilume up long press device unlock mode, volume down cancel

a125u bit 4 can i flash W version ? with out any issue ?

ghostthegod1 said:
Anybody rooted this yet ?
Click to expand...
Click to collapse
Yes, back long ago, there is a thread in this forum for U3 devices only.
sahelkhan022 said:
a125u bit 4 can i flash W version ? with out any issue ?
Click to expand...
Click to collapse
only bit 3.

i already flash u4 w version , very easy

Question How to unlock bootloader?

I just received my Flip3 (SM-F711U1) and would like to unlock my bootloader. However developer options is missing the OEM Unlock option. It's completely missing not just grayed out. I read a few articles about needed to change the system date but none of those guides changed anything. Can someone help?
Also, I attempted to call *#*#7378423*#*# to double checked that it wasn't already unlocked and I got a popup saying "Unabled to process the request."
Thank you.

- Hit settings
- about phone
- software information
- build number 5 times
- profit

I have no issue unlocking developer options. As my first post said the OEM Unlock option is missing from dev options.

RedHatter271 said:
I have no issue unlocking developer options. As my first post said the OEM Unlock option is missing from dev options.
Click to expand...
Click to collapse
Have you tried through fastboot? (fastboot oem unlock)

Oh, got you. Sorry!

As far as I'm aware samsung devices don't support fastboot. I did attempt to connect it in case I was wrong but was not able to get fastboot to recognize the device.

RedHatter271 said:
I just received my Flip3 (SM-F711U1) and would like to unlock my bootloader. However developer options is missing the OEM Unlock option. It's completely missing not just grayed out. I read a few articles about needed to change the system date but none of those guides changed anything. Can someone help?
Also, I attempted to call *#*#7378423*#*# to double checked that it wasn't already unlocked and I got a popup saying "Unabled to process the request."
Thank you.
Click to expand...
Click to collapse
You can try directly unlock without ticking the oem unlock. By boot into download mode. The other thing is your device or carrier or country wont allow your flip 3 to be unlock. There last step you can try is clean flash via odin with your latest firmware.

darkidz555 said:
You can try directly unlock without ticking the oem unlock. By boot into download mode. The other thing is your device or carrier or country wont allow your flip 3 to be unlock. There last step you can try is clean flash via odin with your latest firmware.
Click to expand...
Click to collapse
I can get into download mode fine but don't know how to use that to unlock directly. Can you give more details?
I tried a clean flach with my latest firmware but it didn't change anything.
It's a US carrier unlocked version I bought directly from Samsung. CSC of XAA. Currently using a T-Mobile SIM.

RedHatter271 said:
I can get into download mode fine but don't know how to use that to unlock directly. Can you give more details?
I tried a clean flach with my latest firmware but it didn't change anything.
It's a US carrier unlocked version I bought directly from Samsung. CSC of XAA. Currently using a T-Mobile SIM.
Click to expand...
Click to collapse
Did your Developer Options come already unlocked after setting it up?

twistedumbrella said:
Did your Developer Options come already unlocked after setting it up?
Click to expand...
Click to collapse
If you had them enabled on your last phone and you restored from your Google backup, developer options will be enabled. Has happened on all of my phones since Android 9

luigi90210 said:
If you had them enabled on your last phone and you restored from your Google backup, developer options will be enabled. Has happened on all of my phones since Android 9
Click to expand...
Click to collapse
Thanks, but I was asking @RedHatter271 to see if the restore data might have corrupted the options.

twistedumbrella said:
Thanks, but I was asking @RedHatter271 to see if the restore data might have corrupted the options.
Click to expand...
Click to collapse
My option is missing as well but I have the T-Mobile model that I have sim unlocked. As far as I knew all us models of Samsung phones did not support bootloader unlocking

luigi90210 said:
My option is missing as well but I have the T-Mobile model that I have sim unlocked. As far as I knew all us models of Samsung phones did not support bootloader unlocking
Click to expand...
Click to collapse
They support it.

RedHatter271 said:
I can get into download mode fine but don't know how to use that to unlock directly. Can you give more details?
I tried a clean flach with my latest firmware but it didn't change anything.
It's a US carrier unlocked version I bought directly from Samsung. CSC of XAA. Currently using a T-Mobile SIM.
Click to expand...
Click to collapse
If you can boot into download mode there is an instruction just press vol up button and it will prompt do you want to unlock bootloader mine is like that. Im not sure yours since mine is korea version.

luigi90210 said:
My option is missing as well but I have the T-Mobile model that I have sim unlocked. As far as I knew all us models of Samsung phones did not support bootloader .
Click to expand...
Click to collapse
They support bootloader unlock. samsung dont support using fastboot unlock or command at all

if you're in North America, Canada etc Qualcomm chips there do not support bootloader unlocking, at least the Samsung one's don't, not sure about other OEMs.

darkidz555 said:
They support bootloader unlock. samsung dont support using fastboot unlock or command at all
Click to expand...
Click to collapse
They used to, so there was always a possibility it returned.

I recently read this article on XDA about unlocking the boot loader on the Fold 3 which results in Samsung disabling the camera (WTH?), Is this a thing on the Flip3 too?

My device is rooted. I have always been able to find the OEM unlock option under developer options without any constraints.
My camera is NOT affected. I can still use it without any issues.
I have an European device (SM-F711B).
Hope this helps some of you to track down whether this is a location or carrier based problem.

Hey Redhatter,
Out of topic question, but are you getting Tmobile 5G just fine?
RedHatter271 said:
I just received my Flip3 (SM-F711U1) and would like to unlock my bootloader. However developer options is missing the OEM Unlock option. It's completely missing not just grayed out. I read a few articles about needed to change the system date but none of those guides changed anything. Can someone help?
Also, I attempted to call *#*#7378423*#*# to double checked that it wasn't already unlocked and I got a popup saying "Unabled to process the request."
Thank you.
Click to expand...
Click to collapse