I was trying to link the controller to the aircraft, I completed the firmware update.
The aircraft would not link and it is stuck in the linking mode. It will not stop beeping and it will not shut off if I hold the power button

Hello there NunezaNYC. I am sorry for the trouble this has caused and thank you for reaching out. Kindly please try to calibrate your DJI Mini 2 Remote Controller to see if the issue will still persist? Kindly please keep us posted for further assistance. Thank you.

Hi!
You might be better off posting your question in the 'products' section of this forum.
That is way more active.
Just create a new thread here : https://forum.dji.com/forum-129-1.html and select the right category / subcategory.