Reason is that firmware update file simply won’t fit into the remaining free disk space. After some years of happy automatic updates I got to the point when automatic update did not work anymore. In my case it is a MikroTik hAP lite TC – Product code RB941-2nD-TC – which has 16MB of flash storage. Some MikroTik routers have a really small disk space capacity.

Most of the information related to the RouterOS firmware update is present in MikroTik Wiki – check it out.

I have successfully performed the remote firmware update on two Mikrotik hAP lite TC devices from version 6.43.2 to 6.44.

Also, if you perform the remote update, make sure you can get to the device, in case the remote access will be interrupted during the update process. Make sure you have backup of the configuration and backup device in case of an unexpected failure.

Firmware update can be a tricky process.Selected packages of the router will be updated remotely.Automatic firmware update does not work, because there is not enough disk space on the MikroTik router.Remote MikroTik router has an available RouterOS firmware update.

This guide describes the following situation:

Routerboard upgrade