buying a key for ats25x1

[rexonair]

Hi, I want to buy a key for a ATS25X1 with firmware version 4.2 air beta. I live in France. Who can sell me this ? Thank you

[STRTKEMPO]

Do you know how to go back to stock on this? something went wrong with the update

[rexonair]

you can flash another firmware with the arduino IDE or ESP32 dowload tool :

try with version 4.0 by Bernard Binns :
https://www.qsl.net/n9ewo/ats25.html