I have a RB112 with RouterOS 2.9.42. I made a mistake and configured it for set boot-device "ethernet" only. Now I can not get it to boot using the nand. The unit is mounted on a mast. Is my only solution to unmount it and connect a serial cable?

I have tried the netinstall with a script to change "set boot-device nand-only" but this does not work and it only boots to ethernet.

Anybody have any suggestions?

do you have routerboard package installed?

do you have routerboard package installed?

Yes, I have all packages installed except UPS and GPS. I installed them via Netinstall and I'm able to reinstall them.

sorry, but you can only fix this by serial cable