@Tarts5 - You wrote on page https://forum.openwrt.org/t/solved-flashing-mr18-and-latest-up-to-date-firmware/14369/3, that you downgraded MR18 from 25.11 to 25.9. Could You write how You did it?
The original topic is closed, so I could not write there.
I entered diagnostic mode with network enabled (see: https://forum.openwrt.org/t/problem-with-flash-meraki-mr18/98388 ), can use tftp to transfer files, but I'm not sure how to use dd in this mode and if it is safe.
Thanks for reply.