I’ve looked into the PCVOLTLIMITS, it could be useful if it put the board in a safe state before complete power loss, but as far as I have read it only puts the WP in ULPM, and I can’t get it to work with my current power supply. As for the SD, it is already being used for all the logs that that program saves, and there is still a possibility that it corrupts, so we are back again at the starting point. The only USB port that the WP has is already being used for the connection with the machines, adding a HUB might be possible but that makes the connection way too fiddly and I still want to fit in the same size constraints… Seems like I won’t be able to do this without adding more memories to restore the system with or by racing the capacitors in putting the system in a safe state, a compromise must be made. I’m still wondering about Legato Read Only, I’m pretty sure that the culprit of these corruptions is Legato since I’ve disabled its startup script and the WP is still alive (But without internet connection and no GPIO). If only there was a fix, I think the corruption issue might be resolved this way.