Helpful Know-How for Troubleshoot and Features

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Basic Troubleshoot
CPU Debug LED On
Memory Debug LED On / Memory XMP Fail

Specification
CPU / PCIe Power Connector Explanation (Can I only use 4 pin for CPU power connector?)
Motherboard PCB Layer vs Memory Overclocking
B550 UNIFY/UNIFY-X PCIe Lane Switching

Storage
Intel® 500 Series Motherboard M.2 RAID Guide

Overclocking
Intel Memory Overclocking (11th vs 10th Gen CPU)
CPU Lite Load BIOS Option Explanation (9900K as example)

Other Function
Resizable Bar

Helpful Thread on MSI Forum
RAM explained: Why two modules are better than four / single- vs. dual-rank / stability testing

 

[Pangolin]

MSI MB BIOS Naming Rule and M-Flash Limitation
How to Find Current BIOS Version
→ Hit "DEL" during boot process to enter BIOS
→ Check upper right section in BIOS interface

MSI MB Retail BIOS Naming Rule

Ex. E7B50IMS.100 (1st release MP BIOS) -> E7B50IMS.111 (beta BIOS) -> E7B50IMS.112 (beta BIOS) -> E7B50IMS.110 (2nd release MP BIOS) -> E7B50IMS.121 (beta BIOS) ...
● Any BIOS version that ends with 0 = official release BIOS, release to MSI website
● Any BIOS version that does not end with 0 = beta release BIOS, not always release to MSI website
Beta release BIOS contains solution addressing specific issue or is for urgent BIOS release with critical update (ex. ME/AGESA code update/critical bug fix).

My Downloaded BIOS is Not Showing Up in To-Be-MFLASH Menu
☞ Did you extract the BIOS file to the root folder of USB pen drive?
☞ Did you download the correct BIOS?
a. Model number must be identical
- E7B50IMS.150 ------> E7D05IMS.150
You can't flash random BIOS to motherboard since it will definitely brick the motherboard
b. Main BIOS version must be identical
- E7B50IMS.150 ------> E7B50IMS.260
Multiple different model motherboard can share same model number, make sure you download proper BIOS from product page
c. Customer ID must be MS
- E7B58IMS.150 ------> E7B58IKB.1K1
MSI does not cover warranty for custom OEM BIOS, you need to contact the original system integrator that you bought your MB/Desktop from
☞ MSI desktop system has its own special BIOS and it is not compatible with MSI channel motherboard BIOS