Форум HARDUINO

Hi I bought an ATS25 max that I was told already had a key, when I tried to install the update now is requesting for me to input manually the key (that I don't have) and Im stuck (can't get back to my old firware) Do I need to buy a key again!?

UPDATE: I just found out from the seller that my version was using free stock sotware, so I don't have a Key... I need to purchace one so If anyone can sell me one I would be gratefull. Thanks!