Hi @all there is currently a bug in the tinky fw that makes it impossible to change the MAC-Adr in the bootloader. This is caused by a corrupt VCTL "Partitioin". Attached is a working on simply update the partition like the Ramdisk etc. but use the falues VCTL 0x707C0000 0x0 0x0 please check the values above before updating good n8 this sould solve your problem michael :-)