How to unlock my TF300T in 2025

[OldTF300T]

Hello,

I have a fully functional Asus Transformer TF300T that I want to unlock. Even after all these years it works! However, for me to make it usable again, I need to unlock it.

I tried Unlock Device App V7 but it says network error, how can this be resolved so I can unlock my tablet?

[Falcon_ASUS]

@OldTF300T 
For TF300T, there will no longer be any system updates and maintenance (including ZenUI Launcher & server).
Sorry for any inconvenience it may cause. Thank you for your understanding and support.

[OldTF300T]

I bought that tablet. If Asus is going to break functionality of my tablet, they should at least allow those of us who bought the product to run the server ourselves so we can have control over our device.
What can be done so I can unlock the product myself?