The RouterOS scripts from https://github.com/eworm-de/routeros-scripts require a recent routeros version (7.19 as of 2026-03-11).
It is not rare to have an older version when reinstalling a Mikrotik router that has not been updated for a while.
So, the first step I do when configuring a new or old router is to upgrade the RouterOS to the latest stable version.
This usually requires multiple reboots because the upgrade process not always goes directly to the last version.
Also, upgrading the firmware requires an extra boot.
The simple-routeros-update.rsc doesn't use any functionality the requires a specific RouterOS version, so it should work with almost any router. (I have upgraded routers from v6 using this method).
The shell script is just a wrapper around ssh/scp to launch the rsc script.
