--- a/src/eric7/MicroPython/Devices/EspDevices.py Sat Mar 04 16:37:02 2023 +0100 +++ b/src/eric7/MicroPython/Devices/EspDevices.py Sat Mar 04 18:09:08 2023 +0100 @@ -1128,6 +1128,9 @@ flashArgs.append("write_flash") if flashMode: flashArgs += ["--flash_mode", flashMode] + if chip == "esp8266": + # ESP 8266 seems to need flash size detection + flashArgs += ["--flash_size", "detect"] flashArgs += [ flashAddress, firmware,