@magge Thanks for sharing your detailed testing report. I agree with @crispyoz's suggestion to try running your software on stock Onion hardware - this way we can rule out circuit issues. @magge said in Omega2S+ overlay JFFS2 filesystem corruption: Is there a prototyping board I should order when working with this? I tried to google for it but did not get any wiser... There's an Omega2S development board you can use. Or if you would prefer, you can use an Omega2+ and an Expansion Dock. Our distributors have all 3 products in stock and ready to ship.

@carfarmer did you see this post: https://community.onion.io/topic/4448/onion-omega-2-jffs2-newly-erased-block-contained-word-0x0-at-offset-0x01180000-warning/