Easy way to relock bootloader?

G

GuestK00136

Guest
Nov 28, 2017 at 4:51 PM
Many, if not all, Exynos models on the Note 8 have an unlocked bootloader by default so unlike other Android devices, Motorola for example, there is no ADB command you can use to lock it.

If you want to provide more context, I would be happy to assist further.
 
V

VerucaSalt

Senior Member
Sep 26, 2013
129
65
0
Sydney
Nov 28, 2017 at 11:11 PM
A_H_E said:
Many, if not all, Exynos models on the Note 8 have an unlocked bootloader by default so unlike other Android devices, Motorola for example, there is no ADB command you can use to lock it.

If you want to provide more context, I would be happy to assist further.
Click to expand...
Hello.
Thanks for replying. I have an Australian Note8 with Vodafone.
I went into developer settings and toggled the OEM Unlock/Bootloader unlock option. That is the only action I have taken.
Next time I went to use Android Pay it told me my bootloader was unlocked and it will no longer work.
I went back into developer settings and there it is, bootloader status is unlocked! Is this normal for Samsung devices?
All I want to do is relock the bootloader so that I may use Android Pay again.
I have not rooted the phone. All other apps pass safetynet.
Any advice would be greatly appreciated.
 
M

me2151

Senior Member
Apr 12, 2012
2,186
4,478
193
Jacksonville, FL
Nov 28, 2017 at 11:52 PM
VerucaSalt said:
Hello.
Thanks for replying. I have an Australian Note8 with Vodafone.
I went into developer settings and toggled the OEM Unlock/Bootloader unlock option. That is the only action I have taken.
Next time I went to use Android Pay it told me my bootloader was unlocked and it will no longer work.
I went back into developer settings and there it is, bootloader status is unlocked! Is this normal for Samsung devices?
All I want to do is relock the bootloader so that I may use Android Pay again.
I have not rooted the phone. All other apps pass safetynet.
Any advice would be greatly appreciated.
Click to expand...
Once you unlock the BL on Sammy you trip knox which also kills Samsung pay and other knox apps. Not possible to revert it.
 
B

BluePhnx

Senior Member
Oct 12, 2014
722
355
83
Nov 29, 2017 at 12:15 AM
VerucaSalt said:
That's the really strange thing. Secure Folder, Samsung Pay and S-Health all still work.
Only the toggle has been done in dev settings, nothing else.
Click to expand...
What happens when you turn the oem switch to off and reboot? Might have to wait a bit.

Have you tried doing a factory reset?

Or reflashing the stock firmware? (Make sure oem is turned off first. )
 
  • Like
Reactions: VerucaSalt
V

VerucaSalt

Senior Member
Sep 26, 2013
129
65
0
Sydney
Nov 29, 2017 at 12:23 AM
BluePhnx said:
What happens when you turn the oem switch to off and reboot? Might have to wait a bit.

Have you tried doing a factory reset?

Or reflashing the stock firmware? (Make sure oem is turned off first. )
Click to expand...
Thanks for the suggestions. I will have to wait until OEM unlock reappears as I reflashed the stock VAU firmware only yesterday hoping to fix. It didn't.
But before that I did try FR from the settings menu and from recovery. Same problem unfortunately :(
 
G

GuestK00136

Guest
Dec 1, 2017 at 10:17 PM
So a few things:

Knox should only be tripped if you introduce a foreign element to the device; flashing recovery to obtain root.

Turning on 'OEM Unlock' would do nothing to the device concerning Knox as it doesn't touch/alter the container reserved for Knox.

Thus if you were going to root, you would certainly need to have 'OEM Unlock' enabled to flash recovery.

This explains explain why Secure Folder, Samsung Pay and S-Health still work; the Knox container wasn't altered and the fuse not blown.

My suggestion is now that you have reset your device, don't bother toggling 'OEM Unlock' again unless you plan to root.
 
willcor

willcor

Senior Member
Oct 2, 2008
1,020
290
113
Dec 2, 2017 at 1:10 PM
VerucaSalt said:
Thanks for the suggestions. I will have to wait until OEM unlock reappears as I reflashed the stock VAU firmware only yesterday hoping to fix. It didn't.
But before that I did try FR from the settings menu and from recovery. Same problem unfortunately :(
Click to expand...

I basically had similar experience,( as you.) with toggling OEM toggle etc and it showed me that it was unlocked.
However a factory reset, should sort everything out.
My OEM showed after factory reset, that it was locked again.
Just wait the 7 days and check. Should be ok.

on a side note,....
I see even in my Google Play /Settings /Device
certification, it showing... Certified.
When my OEM was unlocked it showed
something like not verified / not certified or something like that.
 
  • Like
Reactions: VerucaSalt and winol
V

VerucaSalt

Senior Member
Sep 26, 2013
129
65
0
Sydney
Dec 4, 2017 at 7:37 AM
A_H_E said:
So a few things:

Knox should only be tripped if you introduce a foreign element to the device; flashing recovery to obtain root.

Turning on 'OEM Unlock' would do nothing to the device concerning Knox as it doesn't touch/alter the container reserved for Knox.

My suggestion is now that you have reset your device, don't bother toggling 'OEM Unlock' again unless you plan to root.
Click to expand...
Thanks man, I guess I have to wait a few more days until OEM unlock reappears and I can verify the status.
All I can say is that right now, android pay is telling me the bootloader is unlocked and from within download mode, OEM Lock = OFF
 
V

VerucaSalt

Senior Member
Sep 26, 2013
129
65
0
Sydney
Dec 7, 2017 at 4:07 AM
willcor said:
I basically had similar experience,( as you.) with toggling OEM toggle etc and it showed me that it was unlocked.
However a factory reset, should sort everything out.
My OEM showed after factory reset, that it was locked again.
Just wait the 7 days and check. Should be ok.
.
Click to expand...
This is absolutely correct. OEM unlock toggled back and reboot.
BL now shows as locked.
Thanks. :good:
 
  • Like
Reactions: willcor
sefrcoko

sefrcoko

Senior Member
Feb 20, 2012
2,375
1,286
0
Feb 13, 2018 at 7:17 PM
Tayfnergin1997 said:


3 day ago buy phone

---------- Post added at 07:19 PM ---------- Previous post was at 07:15 PM ----------

3 day ago buy. SM-N950F
Click to expand...
Ok thanks. It usually takes 7 days for the oem unlock toggle to appear in the developers options. So wait another few days (make it 8 in total to be safe) and then reboot. See if you have the toggle at that point. In the meantime, read through the oem unlock thread for more details.
 
  • Like
Reactions: Tayfnergin1997
T

Tayfnergin1997

New member
Feb 13, 2018
3
0
0
Feb 13, 2018 at 7:22 PM
sefrcoko said:
Ok thanks. It usually takes 7 days for the oem unlock toggle to appear in the developers options. So wait another few days (make it 8 in total to be safe) and then reboot. See if you have the toggle at that point. In the meantime, read through the oem unlock thread for more details.
Click to expand...
Thanks bro. Oem unlock thread link please
 
You must log in or register to reply here.

New posts

Our Apps
Get our official app!
The best way to access XDA on your phone
Nav Gestures
Add swipe gestures to any Android
One Handed Mode
Eases uses one hand with your phone