ESP8266 - erase_flash, wenn mal wieder nur gibberish auf dem Serial Monitor ankommt

[user@linux HyperionRGB]$ sudo esptool -c auto -p /dev/ttyUSB1 erase_flash
esptool.py v2.5.0
Serial port /dev/ttyUSB1
Connecting....
Detecting chip type... ESP8266
Chip is ESP8266EX
Features: WiFi
MAC: 60:01:94:51:a8:34
Uploading stub...
Running stub...
Stub running...
Erasing flash (this may take a while)...
Chip erase completed successfully in 2.4s
Hard resetting via RTS pin...
[user@linux HyperionRGB]$