Question Can't unlock bootloader

[blade1500]

OK I'm from the UK and I have a Z Flip 3 SM-F711B I have to do the trick where u set the time back to make it so the oem unlock appears in developer settings and then when I reboot to download mode there is no long press volume up don't know why it's doing this as I now what I'm doing as I used to use custom roms on all my other samsungs.

 

[LR7875]

OK I'm from the UK and I have a Z Flip 3 SM-F711B I have to do the trick where u set the time back to make it so the oem unlock appears in developer settings and then when I reboot to download mode there is no long press volume up don't know why it's doing this as I now what I'm doing as I used to use custom roms on all my other samsungs.

If you don't mind, post some screenshots.

 

[blade1500]

I'll do it when I get in from work

 

[blade1500]

 

[LR7875]

Make sure you have enabled OEM unlock in developer options first.
Translated Chinese to English on 2nd screenshot:
Long press volume up to unlock bootloader.

 

[blade1500]

I've enabled it in dev menu so I'll have a look on what u said on the second pic