OEM Unlock option isnt available in dev options - how to enable it?

[frrbs]

I have a Tab A7 SM-T500 but OEM Unlock wont appear in dev options, how am I supposed to make it visible?

The device was bought from samsung like 2 years ago and absolutely nothing will get oem unlock to appear.

What does U1 mean in the status of OEM lock : On(U1) in download mode?

[GiZsY]

Have you tried to reset dev settings

[frrbs]

Not sure where that is, but I have done multiple factory resets and reflashed stock fw, nothing seems to make it appear.

[GiZsY]

Navigate to @Apps in settings an then locate @Settings select and then storage , erase data , cache first