iFOTA.netLibraryFirmware
EN
← iBridge2,21
iBridge2,21 · iBridge2,21

iBridge2,21 · bridgeOS 5.1

18P3030Unsigned
Catalog data · Last updated: Oct 21, 2026, 3:25 PM UTC

Restore IPSW for iBridge2,21: bridgeOS 5.1, build 18P3030.

Firmware information

Version
bridgeOS 5.1
Build
18P3030
IPSW
Restore IPSW
Size
0.53 GB
Release date
Dec 14, 2020, 6:32 PM UTC
File name
iBridge2,1,iBridge2,10,iBridge2,12,iBridge2,14,iBridge2,15,iBridge2,16,iBridge2,19,iBridge2,20,iBridge2,21,iBridge2,22,iBridge2,3,iBridge2,4,iBridge2,5,iBridge2,6,iBridge2,7,iBridge2,8_5.1_18P3030_Restore.ipsw
Download host
updates.cdn-apple.com

IPSW download

Check the model and signing status before downloading.

Download IPSW
Download hostupdates.cdn-apple.comiBridge2,1,iBridge2,10,iBridge2,12,iBridge2,14,iBridge2,15,iBridge2,16,iBridge2,19,iBridge2,20,iBridge2,21,iBridge2,22,iBridge2,3,iBridge2,4,iBridge2,5,iBridge2,6,iBridge2,7,iBridge2,8_5.1_18P3030_Restore.ipsw

The catalog marks this build as unsigned. A normal restore may not be accepted.

Back up before you restore. A restore can erase the data on the device. The identifier has to match, and a file you can download may still be rejected for restore. bridgeOS belongs to the matching Mac hardware and is not a macOS installer.

Checksum

SHA-2565eb27d7c0f2264b70bf7644912b4452f9865678fd3e11223821319fa95ae0bb0
SHA-1c51f6ba868ad6706d607cf403d4caae5670d312a
MD52a617103f6611126da33492875c7f93b