Zenfone 3 delux3 zs570KL boot loop, cant flash as "partition proteted"

[waterdragon]

Please tell us some basic information before asking for help:
Model Name: ZS570KL
Firmware Version: Latest
Rooted or not: rooted
Frequency of Occurrence: Now boot loop
APP Name & APP Version (If your issue relates to the app):
In addition to information above, please also provide as much details as you can, e.g., using scenario, what troubleshooting you've already done, screenshot, etc.
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Phone was fine then died with bootloop, mistakenly flashed with "lock" software and now boot loader is locked. Cant unlock, fastboot works, but cant flash recovery or Rom as error "remote: Partition is protected"
None of the fastboot commands to unlock work.
Can you help please

[ASUS_Bot]

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