My N3DS is was on 9.2E and was working fine, until I decided to sell it on eBay. It had A9LH installed and Luma3DS. I decided to get rid of all of it, and do a fresh install. However I couldn't get back into the Sys Home Menu and was forced into the Menuhax/CtrBootManager. So I tried to get rid of it. Now it doesn't boot at all, when an SD Card is placed inside, the Blue LED light turns on and then off instantly. When there is no SD card inserted, the Blue LED light stays on, however I've tried to force an upgrade, but couldn't as it does nothing.