there are unlimited ways to do same thing in linux...

chmod +x file

to make it eXecutable

So i tested all the workarounds.
but for me it is not working...

evtl. anybody has for me the solution on 4.4.0.68

edit: i think i got it ...evtl.

so i take the hint from coderus :

just replace /usr/bin/txeireader with following script and make it executable: https://gist.github.com/CODeRUS/178d...43318cbbfbae33

looked at the file :

cat /usr/sbin/serial-from-factory-data

this script is executeable an uses txeireader to generate
folders
/config/serial
/config/wifi
/config/bt

so i make the script nonexecutable

3 reboots later the macadress in /config/wifi/mac.txt

is still the same.

and the aigo reconnects automatically to my wifi...