I want a byte that esptool.exe erase_flash does not delete. Idea?

Indelible byte ESP8266

UKHeliBob September 2, 2021, 2:34pm 2

Put it in EEPROM

Topic		Replies	Views
Store variable in PROGMEM -- survive resets? Frequently-Asked Questions	16	9009	May 6, 2021
saving data to flash Syntax & Programs	3	1780	May 6, 2021
ESP12E: Save Data into Flash Memory Programming	7	32133	May 5, 2021
retain eeprom on sketch upload Storage	14	21421	May 6, 2021
will EEPROM keep values after reprogramming? Frequently-Asked Questions	6	2503	May 6, 2021