I unlocked my bootloader once and then again locked it. But my DRM is still L3 this should restore.

[yankit293]

Please tell us some basic information before asking for help:
Model Name: ASUS 5Z
Firmware Version:
Rooted or not:
Frequency of Occurrence:
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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[ARP_ASUS]

Hi yankit,
Bootloader can be unlocked by your side through tool, but the locking process sometimes its not locked manually.
Better to visit service center.
Due to the lockdown, service centers may not be functional. Kindly call the service center before you visit one.
https://www.asus.com/in/support/service-center/india