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ESP32 Firmware Protect
Posted: Thu Feb 12, 2026 9:08 pm
by dvcam99
Hello Flow Code Community,
a short question for ESP32. Is there a way to protect my firmware on this chip? In my old PIC days I did it via the compiler chip setting inside FC.
BR
Dirk
Re: ESP32 Firmware Protect
Posted: Thu Feb 12, 2026 9:34 pm
by mnfisher
Yes..
Go into menuconfig -> Security features.
After reading:
https://docs.espressif.com/projects/esp ... ption.html
Martin
Re: ESP32 Firmware Protect
Posted: Tue Feb 17, 2026 11:11 am
by dvcam99
Many thanks Martin,
it looks a bit more complex then I thought. It seems that I have to Update my ESP‑IDF from 4.x to 5.x.
Are there any issues involved in relation to Flow Code with such a ESP‑IDF Update?
BR
Dirk
Re: ESP32 Firmware Protect
Posted: Tue Feb 17, 2026 11:29 am
by mnfisher
I've not encountered any - I'm currently using v5.5 - and so far no problems...
There have been issues with installing versions - which, luckily, i seem to have avoided - I've always found running the online installer and then the install.bat (in the framework directory) had been good - but back everything up first! One issue is that you will need to rebuild everything - use idf.py fullclean (or delete the build directory) and then rebuild to get things going
Martin