I’m still a bit worried.--
I cannot get the OEM Unlock to be displayed in the Developer menu. I did also follow the guide that was linked above to that subject. But with no change on my phone.
The allow bootloader unlock feature was not present on the Android 4 version, continue the install process, don’t care about the « developer option OEM» feature, just allow adb in the dev option
Édit : do you use Heimdall or Odin ?
After flashing TWRP, you have to launch it before something else be launching. If it is not the case, TWRP is overwrited by Normal mode Boot or Samsung Recovery mode Boot.
to be sure to reboot into TWRP after flashing it, you ‘d better manually turn off your device : unplug the cable and press the « volume down » and « power boutons »,
then boot in TWRP with « volume up » plus « home » and « power » boutons
( if you use Heimdall commands, don’t forget « no reboot » at the end, if you use Odin don’t forget to deselect « auto-reboot » in the option tab.)
Any help with this would be appreciate. Everything worked fine until the last step and the followed the installation guide carefully. It’s referring to the sdcard what what I can see?
I used the international Europe version of TWRP: https://eu.dl.twrp.me/i9300/ and the latest version… (twrp-3.4.0-0-i9300.img.tar)
Is there anything I can do to get this to work or should I just reinstall the stock rom, (I have that too). I have no idea what to do next to fix this.