I saw one person claiming AutoRCM to be the culprit here which is beyond insane so just to make sure everyone is on the same page, this is due to SX OS not supporting launching "OFW" on firmware 8.X. Their "OFW" option is not really true OFW which would just be turning the console on normally without AutoRCM. For one, their OFW option bypasses the fuse check meaning it lets you launch an OFW with any fuse count. This means its just a very watered down version of CFW mode further indicating they must patch parts of the firmware in order to launch "OFW". Now if their CFW doesn't support that firmware, obviously "OFW" won't even work. Note the fault is not on AutoRCM before anyone gets any ideas as Hekate can launch its "Stock" profile on 8.X just fine, after version 4.10 was released.
tl;dr SX OS currently does not support launching CFW or "OFW" on 8.X