Thank you for your patience , understood !

Then the only way to it is :
- flashing myself with encryption on
- ask the manufacturer to do it (giving him the key)

Am I right ?

Thanks ! But: "You'd flash the modified loader to an ESP32, let it download and install the OTA, then simply read out the flash." The downloaded file is encrypted, so it is not readable, no? Here is what I get from ChatGPT, could you tell me what is wrong in that pattern with a single key for all pr...

Thank you for your clear answer. Then, is it possible to use this process to keep the code confidential ? 1. The user buy his own ESP32 2. He download a binary loader app I provide(code not encrypted) 3. He burn the ESP32 with this binary (using esptool-js) 4. Then after restarting ESP32, the binary...

Hi, I plan to sell an app to my customers. Customers have or buy their own ESP32 card, then they burn the app and start to use it. But, I need to protect the code from reading (copy prevention already done with gumroad generated licence keys api). What is for you the best process ? 1. My customers a...