ESPlorer unter Raspi3 keine Verbindung zu Lolin--nodeMCU (Micropython Firmware)

[stepbystep]

Hallo,
nachdem ich meinen ESP geflasht habe.....
*************************************
pi@raspi1:~/esptool $ esptool.py --port /dev/ttyUSB0 --baud 115200 write_flash --verify --flash_size=detect -fm dio 0 esp8266-20180907-v1.9.4-494-ge814db592.bin
esptool.py v2.5.0
Serial port /dev/ttyUSB0
Connecting....
Detecting chip type... ESP8266
Chip is ESP8266EX
Features: WiFi
MAC: 2c:3a:e8:0a:79:3c
Uploading stub...
Running stub...
Stub running...
Configuring flash size...
Auto-detected Flash size: 4MB
Flash params set to 0x0240
Compressed 581220 bytes to 382322...
Wrote 581220 bytes (382322 compressed) at 0x00000000 in 35.0 seconds (effective 133.0 kbit/s)...
Hash of data verified.

Leaving...
Verifying just-written flash...
(This option is deprecated, flash contents are now always read back after flashing.)
Flash params set to 0x0240
Verifying 0x8de64 (581220) bytes @ 0x00000000 in flash against esp8266-20180907-v1.9.4-494-ge814db592.bin...
-- verify OK (digest matched)
Hard resetting via RTS pin...

**********************************************
... bekomme ich keine Verbindung mit dem ESP unter dem ESPlorer.

Einstellungen
- selected firmware: Micropython
- serial Port: ttyUSB0
- autodetect firmware
- baudraten alle ausprobiert
- -fm dio probiert
- kurzes USB-Kabel verwendet
- keine externe Stromversorgung am ESP

Meldung:

Communication with MCU..
Can't autodetect firmware, because proper answer not received (may be unknown firmware).
Please, reset module or continue.

Unter Windows bricht der ESPlorer mit fatal error ab

Hätte jemand noch einen Tipp an was es liegen könnte?
Danke