| BIOS update download | |||||
| BIOS version | date | info | name | add.1 | add.2 |
| B2.3G | 06/04/2026 | 1.Update AGESA PI to version 1.3.0.1 2.Optimize PTM BIOS feature options 3.Improve memory compatibility 4.Upgrade UEFI PXE firmware to version 2.078 *Kind reminder: 1. If you are using a non-Maxsun PTM graphical BIOS, please update to the B1.9G version of the BIOS before updating to the B2.3G version. 2. Please use it in conjunction with the latest MaxsunSync2 software. |
MSChallengerB850MKWIFI23.zip | DOWN | DOWN |
| B2.0G(Beta) | 01/16/2026 | 1. Improve the compatibility of the Maxsun lighting control system. *Kind reminder: 1. If you are using a non-Maxsun PTM graphical BIOS, please update to the B1.9G version of the BIOS before updating to the B2.0G version. 2. Please use it in conjunction with the latest MaxsunSync2 software. |
MSChallengerB850MKWIFI20.zip | DOWN | DOWN |
| B1.9G | 12/02/2025 | 1. Update to MAXSUN's New PTM Graphical Interface (After the update is complete, the system will automatically shut down. Restart the device to finalize the update.) Note: Downgrading the BIOS can only be performed using a burner device. Please proceed with caution when upgrading to the new PTM graphical interface |
MSChallengerB850MKWIFI19.zip | DOWN | DOWN |
| B1.8G | 10/23/2025 | 1. Update AgesaPI to 1.2.0.3g 2. Upgrade UEFI PXE to 2.075 3. Optimize memory compatibility |
MSChallengerB850MKWIFI18.zip | DOWN | DOWN |
| B1.7G（Beta） | 09/15/2025 | 1. Optimize memory compatibility 2. Turn off IPV6 UEFI PXE 3 .Upgrade PXE version to 2.074 |
MSChallengerB850MKWIFI17.zip | DOWN | DOWN |
| B1.6G | 08/13/2025 | 1.Original Version。 | MSChallengerB850MKWIFI16.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 | |
| 8852BE_Bluetooth_WIFI | for Realtek8852BE_Win10/11-64 | DOWN | DOWN | |
| AM5 RAID | for Win10/11-64 AM5_RAID | DOWN | DOWN | |
| RGB Driver | for Win10/11-64 STC_LED_Controller.zip | DOWN | DOWN | |
| Download related motherboard application software | ||||
| Name | Description | Add.1 | Add.2 | |
| RGB control software | Suitable for motherboards with ARGB and NRGB pins | DOWN | DOWN | |
| Manual | ||||
| VER | Description | add.1 | add.2 | |
| A1.0 | MS-Challenger B850M-K WIFI 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 | |
