unable to permantly delete m3 bitlocker loader from trash. Even after changing locked status. It remains.

The M3 FAQs say > https://www.m3datarecovery.com/mac-bitlocker/online-help.html#uninstall

If that doesn't work.

Then Safe Mode and/or SIP could very well be the key getting rid of that junk-ware.

Start up your Mac in safe mode - Apple Support

Disabling and Enabling System Integrity Protection | Apple Developer Documentation

Sorry for the Edit:

Try holding the Option (Alt) key while Emptying the Trash.

Contact the Third Party Developers of the M3 Bitlocker for specific instruction on how to do this

https://www.m3datarecovery.com/mac-bitlocker/

Though, there are some enterprising claims regarding macOS 16 Tahoe, with is still in development

Meaning, until macOS 26 Tahoe is totally finished with its developments and bug fixes doing the Beta Testing Period

It is difficult to see how they can make certain claims

Quote " M3 BitLocker Loader for Mac is the first and only BitLocker for Mac utility software that is fully compatible with Apple Silicon chips (M4, M3, M2, M1), macOS 26 Tahoe and macOS 15 Sequoia " End Quote

Welcome

I am kind of guessing you have tried to delete the Application ?

Perhaps my colleague @den.thed can comment on what follows

Reinstalling the application a new and then using the Developers Instructions to remove the Application are needed ?

That or disabling SIP first

This may or may not all the Emptying of Trash ( bin )

Then, Immediately Re-Enabling SIP

From an Al / LLM generated response

I would take this with a Large Grain of Rock Salt , lol

To remove BitLocker encryption from a drive using M3 BitLocker Loader on a Mac, you can either uninstall the software entirely or use it to decrypt the drive, depending on your needs.

 If you want to remove the software, you can drag it from the Applications folder to the Trash. If you want to decrypt the drive, you'll need to use the M3 BitLocker Loader software to do so. 

To uninstall M3 BitLocker Loader:

1. Open the Applications folder.
2. Locate the M3 BitLocker Loader application.
3. Drag the application to the Trash.
4. Empty the Trash to complete the uninstallation. 

To decrypt a BitLocker-encrypted drive using M3 BitLocker Loader:

1. Launch the M3 BitLocker Loader application.
2. Select the drive you want to decrypt.
3. Follow the on-screen instructions to decrypt the drive using the provided password or recovery key. 

Owl-53 wrote:

From an Al / LLM generated response

I would take this with a Large Grain of Rock Salt , lol

👍 good one lol