The link emonSD Download — OpenEnergyMonitor 0.0.1 documentation remains accurate and the latest on 20 April 2025 is emonSD-01Feb24
Note that an image built from EmonCMS Install Scripts will be given the date that the image is created. If you later attempt to update it using one of images in the list linked above, it will fail. The solution is to rename the empty file in the bootfs partition of the SD card with the name corresponding to its creation date to the name of the latest image available to download (at the present time emonSD-01Feb24).
Looking on the SD card:
Or looking at the boot directory on the Raspberry Pi:
We are aware of the problem and it might be resolved with a future release.