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BIOS Version Notes

Note Your Old BIOS Version First Rollback Is Not Always Possible

People treat a BIOS update like an app update - try it, and roll back if it misbehaves. Firmware does not always offer that door. This page is the habit that protects you anyway: a written 'before' record, the old file kept safe, and a clear-eyed view of when rollback exists and when it does not.

Technical AnshuDesktop and Laptop PCsStep-by-step guide
Watch the video for the complete update routine, preparation included, step-by-step

Three facts surprise people after an update goes sideways. First, many laptops and branded desktops refuse older BIOS versions entirely. Second, desktop boards vary - and some updates are marked in their own release notes as impossible to flash back, because security capsules or management-engine firmware moved one-way. Third, makers routinely remove old files from support pages, so 'I will just download the old one again' can fail on the day you need it. The defence is done before the flash, and it takes three minutes.

The before record - write this down for every update
Board and revisionATX Board X570 - Rev 1.1
Current version and dateF32 - 12 Mar 2024
Reason for updatingNew CPU support (support list F35)
Old version fileDownloaded and stored with these notes
Settings screens photographed - recovery key saved - then update
Example values. Four lines and two downloads, made before the flash, are the difference between an update you can recover from and one you can only regret.
1

Make the Before Record - Four Lines and Two Habits

  1. Board model and revision, current BIOS version and its date - from the board printing and msinfo32
  2. The one-line reason for the update - what it is supposed to fix or support
  3. Download the file for your CURRENT version too, while it is still on the support page, and store it with these notes. It is your rollback ammunition, bought for free
  4. Photograph your BIOS settings screens. Even a successful rollback does not promise your settings return with it
2

The Rollback Reality, Platform by Platform

  1. Laptops and branded desktops: downgrades are commonly blocked by the maker's own updater. Assume one-way
  2. Retail desktop boards: many allow flashing an older file with the built-in flasher - until an update changes the rules. Read the notes of the version you are ABOUT to install for lines like 'cannot be flashed back' or capsule and security warnings, and believe them
  3. Management-engine and security updates bundled in some releases are frequently one-way even on boards that otherwise allow rollback
  4. Beta-to-stable and stable-to-beta movements have their own restrictions on some brands - again, the release notes are the contract
3

When Rollback Is Genuinely Needed

Rollback is justified by a real regression - the new version broke sleep, destabilised memory that was stable, killed a device. Not by nostalgia and not by benchmark noise. If it is justified and your platform allows it, the procedure is the same safe routine in reverse: old file (the one you kept), built-in flasher, power discipline, recovery key ready, then re-verify and re-check settings. If the platform blocks it, the legitimate routes are the maker's support - who may provide a recovery image or a service flash - and waiting for the next corrective release, which for real regressions usually comes. Force-flash tools that defeat version checks are not a route; they are how a software problem becomes a hardware one.

4

The Safer Habits That Make Rollback Rarely Necessary

  1. Wait a week on non-urgent updates and read reports from owners of your exact board - early regressions surface fast in the open
  2. Update at the calm moment: not before a trip, a deadline or handing the machine to someone else
  3. One change at a time - never pair a BIOS update with new RAM, a new CPU and a Windows feature update in the same evening, or no rollback on earth will tell you which one hurt
  4. Keep the before record permanently. Future-you, facing a strange setting or a support call, will read those four lines with gratitude

Watch the Complete Video Guide

The video shows the full update routine with the preparation habits this page describes, step-by-step.

Watch Full Video
Common Questions (FAQ)

Can I save a copy of my current BIOS from the machine itself?

Some built-in flashers offer a backup option that writes the current firmware to your USB stick. It is worth doing when offered, but treat it as a bonus, not a guarantee - boards with signed-capsule security may accept only maker-signed files on the way back in, which a self-backup may not satisfy. The maker's published file for your version, downloaded and stored, is the reliable rollback copy.

The release notes for the new version say the update is irreversible. Should I still install it?

Take the word seriously - it means the maker has changed something (often security structures) that older firmware cannot coexist with. Install only if your reason clears the honest yes list: CPU support you need, a bug you have, a security fix that matters. If your reason was 'it is newer', an irreversible update is the easiest decision of all - skip it and stay on the version that works.

Two new versions appeared this month. Do I install both in sequence?

Only if the notes demand it. Most updates are cumulative - the newest contains the earlier fixes - and you can jump straight to it. The exception is a stepping-stone note ('update to version X first'), which some boards publish for structural changes. Read the newest version's notes for exactly that line before flashing; it takes thirty seconds and settles the question.

This guide is based on the Technical Anshu BIOS update video - stuck on any step, ask in the video comments and you will get an answer.