S9 FE Upgrade Issue (abl.elf.lz4 missing)

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I have a rooted Samsung Tab S9 FE running OneUI 7 and wanted to upgrade to OneUI 8, but ran into a problem.Guides say you need abl.elf.lz4, but it’s not on my device—I have sboot.Tried flashing without that file, but got a custom firmware error because the bootloader locked itself automatically.Going back to OneUI 7 solved the issue, so it seems this only happens when trying to flash OneUI 8.Any tips or advice on handling this safely?