I am wondering if anyone has downgraded their Ambassador-title-containing O3DS and if they were able to play the titles under emuNAND. I'm not sure if they can be re-downloaded if I decide to upgrade again and it might not be worth it. From what I have read I gather that the downgrade will wipe the NAND out (tickets and all) and currently rxTools doesn't inject backed up tickets, etc. into the sysNAND.