I have an Australian Exynos version. When i reboot to download mode through ADB on my Windows PC and then try to lock it following the usual fastboot commands, i just get <waiting for devices>. I read some where that it's a driver issue so i updated all my drivers, well i think i did but still not having much luck.
I also tried on my Mac but i keep getting an interface error which from what i've read is a MacOS issue that has been broken for a while.
Can anyone help please? I want to re-lock it so that i can sell it.