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- MSI MAG B550M MORTARBIOS · 32.0 MB · 9 May 2025BIOS bin—32.0 MB
- AFS BIOS MSI MAG B550M MORTARBIOS · 13.6 MB · 30 Jan 2024BIOS rar—13.6 MB
- BIOS MSI MAG B550M MORTAR telegram BIOS Repair-2025-09-16BIOS · 18.3 MB · 19 Sept 2025BIOS zip—18.3 MB
- BIOS MSI MAG B550M MORTAR
BIOS firmware for the MSI MAG B550M MORTAR desktop motherboard, an AMD AM4 micro-ATX board, supplied as an 18.2 MB ZIP archive.
BIOS · 18.2 MB · 13 Jan 2022BIOS zip—18.2 MB