| BIOS update download | |||||
| BIOS version | date | info | name | add.1 | add.2 |
| B1.4G | 06/27/2025 | 1. update AgesaPI to 1.2.0.3e PatchA 2. optimize memory compatibility 3. update PXE version to 2.073 4. close App Compatibility Database by default 5. update memory JEDEC information |
MSChallengerB850MK14.zip | DOWN | DOWN |
| B1.2G | 06/17/2025 | 1.Original Version。 | MSChallengerB850MK12.zip | DOWN | DOWN |
| Drivers download | ||||
| Type | Description | add.1 | add.2 | |
| chipset | for Win10/11-64 | DOWN | DOWN | |
| Graphics | for Win10/11-64 | DOWN | DOWN | |
| Audio | for Win10/11-64 Realtek_ALC1220/897 | DOWN | DOWN | |
| Win10 LAN | for Realtek_LAN_Win10-64 | DOWN | DOWN | |
| Win11 LAN | for Realtek_LAN_Win11-64 | DOWN | DOWN | |
| AM5 RAID | for Win10/11-64 AM5_RAID | DOWN | DOWN | |
| Manual | ||||
| VER | Description | add.1 | add.2 | |
| A1.0 | MS-Challenger B850M-K motherboard manual | DOWN | DOWN | |
| V1.0 | AMD DDR5 Memory support list（Update at any time） | DOWN | DOWN | |
| V1.0 | AMD_AM5 Motherboard CPU support list（Update at any time） | DOWN | DOWN | |
