how to change serial and mac on new Xpenoboot?

[extrem69]

Hi i recently installed XPEnoboot 5.1-5022.3 (03/03/2015) but i cant change mac adress, i edited syslinux.cfg from usb with my genuine serial, but xpenology still without activate ddns. When i try to login give me "unknown error".

 

i am running DSM 5.1-5022 Update 4

 

what can i do?

[DHD]

It need valid MAC address also.