DVD drive region set by itself

[Lucas_Miller]

Hello. Recently I found that my laptop's DVD drive region got set by itself. I have only been using VLC media player which doesn't care about DVD regions and BurnAware Free without administrator permission. Previosly it had no region set and 5 changes left. That's how I wanted it to be. In Windows logs I found this which looked a bit suspicious:

Log Name: System
Source: cdrom
Date: 3/10/2021 7:11:44 PM
Event ID: 133
Task Category: None
Level: Information
Keywords: Classic
User: N/A
Computer: HP255-G7
Description:
Device \Device\CdRom0 is locked for exclusive access.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="cdrom" />
<EventID Qualifiers="16388">133</EventID>
<Version>0</Version>
<Level>4</Level>
<Task>0</Task>
<Opcode>0</Opcode>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2021-03-10T18:11:44.0998985Z" />
<EventRecordID>17834</EventRecordID>
<Correlation />
<Execution ProcessID="4" ThreadID="7308" />
<Channel>System</Channel>
<Computer>HP255-G7</Computer>
<Security />
</System>
<EventData>
<Data>\Device\CdRom0</Data>
<Binary>0E0040000100000000000000850004400100000000000000000000005CC00200000000000000000057696E646F7773000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000</Binary>
</EventData>
</Event>

What could have coused that region to change and how can I reset the firmware back to it's original state?

Thanks for any help.