Currently, I test STM32L562 Discovery Kit in low power environment. I tryed some programs and now I lost the original firmware loaded when i bought the board... My question is: Where I can find this program (in Bin or Hex) to loaded again?

[waclawek.jan]

It should be st https://www.st.com/en/evaluation-tools/stm32-discovery-kits.html#resource -> Binary resources

Maybe it's not there. Try asking ST directly through web support form or FAE.

Try looking also under Projects in CubeL5 - at least the sources should be there under Demonstration.

JW