I have an o3DSXL downgraded to 2.1. I am trying to install A9lh using SafeA9LHInstaller through the browser application. Whenever I press SELECT to do the full install, this message appears. "Error: payload_stage1.bin doesn't exist or exceeds max size" I have quadruple-checked to see if I have done everything right. I have made sure everything is in the right spot. I have tried all of the available payloads, but nothing has worked. I've been at this for 2 days now, troubleshooting to see if it can work. For reference, I am using 3ds.guide. I would really appreciate if somebody helped me. Thanks!