Reflash MR18 from CT to OpenWrt

Installing and Using OpenWrt
1

Hi,

Can someone give me some steps for safely converting CucumberTony to OpenWRT. I have 2 MR18s but CT now only supports one device on the free plan.

CT gets a root prompt and is basically just Linux so I’m guessing it won’t be too hard to re flash but I don’t want to get it wrong.

The original guide just seems to be for MR18s with stock Cisco firmware.

Thanks

Rik

2

In case this helps anyone else the solution was pretty easy in the end.

I basically followed this guide (https://openwrt.org/toh/meraki/mr18) from step 6 of Solution A as i already had network connectivity from the console so could wget the initramfs file from another machine.

Only difference is i had to copy to block 1 and 2 as just copying to 2 kept booting back to CT

dd if=/root/openwrt.bin of=/dev/mtdblock2
dd if=/root/openwrt.bin of=/dev/mtdblock1
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