Thanks for the reply @lbernstone I should have been more careful in my wording - I do understand what the Efuses are and am familiar with NVS. I'm looking to permanently store a read-only PCB version value for example. When I referred to "creating" them, I meant the process of defining an efuse in t...

I would like to store the PCB revision number in an efuse so that it's unaffected by changes in firmware code. I've read all the documentation regarding efuses (for example https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/system/efuse.html#structured-efuse-fields ). However,...