How to update or upgrade Syncthing iocage after forgetting to update it for a long period of time

I have been reasonably good at staying on top of TrueNAS updates for my systems, however I did not realize that the apps/jails/iocage needed to be seperatly updated.

As a consequence, the two apps which I have installed have fallen behind.

The main one which is important is syncthing. I tried a few things to update it.

From the GUI, I got an error message

Error: Major ABI change detected, please run 'upgrade' instead.

So I tried to run

iocage upgrade syncthing

However this failed as well

Cloning git repository

Branch 13.1-RELEASE does not exist at https://github.com/freenas/iocage-plugin-syncthing.git!
Using "master" branch for plugin, this may not work with your RELEASE

Host: 13.1-RELEASE is not greater than target: 13.2-RELEASE
This is unsupported.

Does anyone know if there is a solution to this? At the moment I can’t sync data from Syncthing to the Windows machine which I have just installed the Syncthing client onto.

I have managed to recover the Syncthing data by copying it from one location to another location. The location I copied the data to is a samba share, so I managed to get the data via samba instead.

There’s no data lost here, but it would be convenient if there was a way to update or recover Syncthing, otherwise I think my only option is going to be to reinstall Syncthing (also not sure how to do this).