Relock bootloader - Samsung Galaxy S9+ Questions & Answers

Is there any way to relock the bootloader on exynos s9+? Ive tried reflashing stock via Odin but the bootloader is still unlocked and not allowing me to use android pay etc.
I know knox will be tripped but there's no reason that I can't use android pay with a non rooted phone surely? I've tried the root checker app as well and that shows that I do not have root.
When I check in developer options it says the bootloader is already unlocked and the slider is to the left for the oem unlock option. I have tried to slide it to the right which factory resets the device but then on going into developer options again it still shows as the same status (bootloader already unlocked with oem unlock slider to the left)
What can I do to get my phone properly back to stock?
Thanks

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hookguy said:
Is there any way to relock the bootloader on exynos s9+? Ive tried reflashing stock via Odin but the bootloader is still unlocked and not allowing me to use android pay etc.
I know knox will be tripped but there's no reason that I can't use android pay with a non rooted phone surely? I've tried the root checker app as well and that shows that I do not have root.
When I check in developer options it says the bootloader is already unlocked and the slider is to the left for the oem unlock option. I have tried to slide it to the right which factory resets the device but then on going into developer options again it still shows as the same status (bootloader already unlocked with oem unlock slider to the left)
What can I do to get my phone properly back to stock?
Thanks
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Actually there is a good reason why google pay wouldn't work even if the device isn't rooted. There are Payment/banking (and other apps I am sure) require that the device be secure. With the bootloader unlocked the security on your device is severely weakened.
Did you root the phone at all, flash anything to the phone or do anything to modify it at all (something like this as an example). If there was nothing at all done to the phone other then toggling the oem unlock, then it sounds like flashing the proper firmware to the phone, unticking the oem unlock option and factory resetting the phone should work.
If knox is tripped then there is no reversing that. Google searching also shows this would be a likely cause as to why you can not relock the bootloader.. Once knox is tripped it is irreversible (this is because it is an E-fuse), not even flashing stock will not make it go away.

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I think your best bet at this point might actually be to have root and then use Magisk to hide root from the apps you want to use. I'm not sure which apps this will work for but it's probably worth looking into since there may be no going back with your bootloader

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Thank you for the help guys. I did suspect that may be the case and I wouldnt be able to relock but it seemed some people were able to.
Will just root with magisk and use magisk hide to make it work. Thanks!