First thanks a lot for help
ok i understand i have to ignore that
i try now this TFTPD GitHub - per1234/Ariadne-Bootloader: Arduino TFTP bootloader for W5100 Ethernet controller(Arduino Ethernet, Ethernet Shield, etc.)
i use also Arduino IDE and i used "Boards Manager Installation" after there HowTo
Burning the Bootloader all looks fine but i not understand the section Netwerksettings...
i understand why i have to change and i know also what i have to write on IP, Gatewayx and subnetmask
But i nót understand how i have to upload this file...
If i uploeaded like any sketch then i think will be overwritet if i upload after any other sketch
and i see this WriteNetworkesstings-sketch use any other Address on EEprom but i can not see how i must install this
only upload?
or only change the settings, safe and then use it the bootloader
i can also not find the file on my filesystem
edit: i changed now to ariadne bootloader!!!