I have briefly skimmed through the post to understand the trials and tribulations so far but most likely have missed something somewhere.
I have had similar difficulties with my xM1 previously.
I would be interested in learning the answers to the following questions:
- What has lead you to believe that the tag is bricked? The more details the better
- What have you wrote to it and how did you verify it was successful?
- What errors do you encounter when you try hf search after writing to it?
- Do you have any MFC Gen1a tags to practice/experiment with that isn’t an implant?