Samsung phones bootloader unlock I have a samsung tablet gt-n8000 and I want to flash a custom rom . Should I first unlock the bootloader?  if yes , how to do that ? fastboot commands does not work anyway on my tablet so I can not use fastboot oem unlock.
Under developer option, Enable OEM unlock.
First find custom rom as per your mobile model. Connect mobile to computer having developer kit. Root the mobile and flash rom.