iBridge2,21 · iBridge2,21

iBridge2,21 · bridgeOS 4.5

17P5300Unsigned

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

Restore IPSW for iBridge2,21: bridgeOS 4.5, build 17P5300.

Firmware information

Version: bridgeOS 4.5
Build: 17P5300
IPSW: Restore IPSW
Size: 0.49 GB
Release date: Jun 1, 2020, 5:08 PM UTC
File name: iBridge2,1,iBridge2,10,iBridge2,11,iBridge2,12,iBridge2,14,iBridge2,15,iBridge2,16,iBridge2,21,iBridge2,3,iBridge2,4,iBridge2,5,iBridge2,6,iBridge2,7,iBridge2,8_4.5_17P5300_Restore.ipsw
Download host: updates.cdn-apple.com

IPSW download

Check the model and signing status before downloading.

Download IPSW

Download hostupdates.cdn-apple.com

iBridge2,1,iBridge2,10,iBridge2,11,iBridge2,12,iBridge2,14,iBridge2,15,iBridge2,16,iBridge2,21,iBridge2,3,iBridge2,4,iBridge2,5,iBridge2,6,iBridge2,7,iBridge2,8_4.5_17P5300_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-2566e04122adeb64e772a532504e7ceab92c3dcf31ab39f1c3a8a2d5463c7709c4f

SHA-1049cf07fe32ed9476ff3ef7fd4cb05df8eafab41

MD5499082b3c6df1eb1e1b6320c95b23919