Etoner

Hello, First post, long time visitor/user. A few years ago an official Synology update corrupted my DS712+ official boot loader. Because it was already out of warranty and syno support couldn't/wouldn't understand my issue, I searched for ways to fix it and thus found xpenology. Since then until a recent power outage, my Nas has been running 5.2 on Jun's bootloader (can't remember which). My question now is, DS712+ officially supports 6.2.2, is there a way to get my ds712+ box back to having the official Synology bootloader(restored)? Appreciate any help I can get. Thanks!