Hi @IceManX I have a DS509+ too.
after I click this link https://web.archive.org/web/20230117045449/https://archive.synology.com/download/Os/DSM, I select 6.2.3-25426-3 and then what is the correcr file .pat I have to download for my dc509+? there are many many files.......
Thank you very much