An RPi image that both auto updates itself and the firmware is planned, but not yet ready. But people have waited long enough for this firmware update.
Again the image linked to in the forum post is *only* an updater; there is no MinePeon or web interface supported. Do NOT overwrite your HashFast / minepeon SD card; (unless you back it up first!).
so are you saying use another SD card to update the firmware, and when the update is complete, take that sd card back out and put the original sd card back into the RPI?
what about the latest minepeon or cgminer?
The original sd card is self-updating for both minepeon and cgminer.