You need the Android SDK Platform Tools.
Before attempting any unlock, you must gather your device's unique identifiers: IMEI/MEID: Settings > About Phone or by dialing Product ID: *#*#1357946#*#* on your dialer to reveal this code. Serial Number: Settings > About Phone > Status Enable Developer Options: Settings > About Phone Build Number 7 times, then go to Settings > System > Developer Options and enable USB Debugging OEM Unlocking how to unlock bootloader in huawei p30 lite phone verified
, this method may be blocked as Huawei removed certain fastboot commands required for the final unlock step. General Unlocking Procedure (Once You Have a Code) You need the Android SDK Platform Tools