macOS 11

IPSW · macOS

macOS 11.0.1 beta IPSW Download (20B5012d)

Build 20B5012d, released October 28, 2020 — restore images for 1 Mac, straight from Apple's servers.

Beta Build 20B5012d Size 13.67 GB All macOS 11 builds →
Apple has stopped signing this build. A restore will be rejected at the final step. The files stay listed for reference. Signing status checked September 12, 2026.

Choose your Mac

1 device. Each row is one file on Apple's CDN.

Developer Transition Kit
Developer Transition Kit
Unsigned ADP3,1, ADP3,2 13.67 GB
UniversalMac_11.0.1_20B5012d_Restore.ipsw
Download
Version
macOS 11.0.1 beta
Build
20B5012d
Released
October 28, 2020
Channel
Developer & public beta
Previous
macOS 11.0 beta 10
Next
macOS 11.0.1 RC

How to install macOS 11.0.1 beta from the IPSW

Four steps, and the one that matters most is the first.

Back up first

A restore erases the device. Make an archived backup in Finder or the Apple Devices app — an iCloud backup taken on a newer version cannot be restored onto an older one. Our backup guide covers the difference.

Get the file for your exact model

Check Settings → General → About → Model Name, then download the IPSW for that device. The download shows the file size; compare it with the SHA-256 under Details if you want to be certain the file is intact.

Restore in Finder or Apple Devices

Connect with a cable, select the device, then hold Option (Mac) or Shift (Windows) and click Restore to choose the .ipsw. Update keeps your data but only works upward; Restore erases and is how you downgrade.

Set up or restore your backup

After the restore the device starts fresh. Restore the backup you made — only if it came from the same or an older version than the one you just installed.

Questions? Answers.

Can I restore macOS 11.0.1 beta today?

Not at the moment — Apple has stopped signing 20B5012d, so a restore will be rejected at the final step. The files remain here for reference and for signed re-releases.

Which is the right file for my device?

Match the identifier in Settings → General → About (or under the model's name here) against the one on each row. Wi-Fi and Cellular iPads share a file; different generations never do. Restoring the wrong device's IPSW simply fails — it cannot damage the device.

What does "signed" mean?

Apple's servers must approve a firmware before a device will accept it, and Apple only approves the builds it is currently shipping. A signed file can be restored today; an unsigned one is rejected at the end of the process, however you obtained it. Signing status changes without notice, usually within days of a newer release, which is why this catalogue rechecks it automatically.

Will I lose my data?

A Restore erases the device — that is what makes a downgrade possible. An Update with an IPSW keeps your data, but only when moving to a newer version. Either way, make an archived backup on a computer first; an iCloud backup taken on a newer version will not restore onto an older one.