Up to last week, my NanoPI M4 running OMV4 worked like a charm - then the SD card gave out.
Now, I had to find out, that the OMV4-images I used for installation are no longer available. All my plugins are no longer available in OMV5, so installing OMV5 is not an option either (I do not want to become a linux guru and get into docker stuff or whatever).
Bottom line question: How can I re-install OMV4 to my NanoPI M4?