iBridge2,3 · iBridge2,3

iBridge2,3 · bridgeOS 4.4

17P4281Unsigned

Catalog data · Last updated: Oct 21, 2026, 7:56 PM UTC

Restore IPSW for iBridge2,3: bridgeOS 4.4, build 17P4281.

Firmware information

Version: bridgeOS 4.4
Build: 17P4281
IPSW: Restore IPSW
Size: 0.46 GB
Release date: Apr 8, 2020, 11:23 PM UTC
File name: iBridge2,1,iBridge2,10,iBridge2,11,iBridge2,12,iBridge2,14,iBridge2,15,iBridge2,3,iBridge2,4,iBridge2,5,iBridge2,6,iBridge2,7,iBridge2,8_4.4_17P4281_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,iBridge2,3,iBridge2,4,iBridge2,5,iBridge2,6,iBridge2,7,iBridge2,8_4.4_17P4281_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-25676768af794fa371a0e79ebcb42425d133dca946b07bf1f7b9c446a1008a45295

SHA-11ee251ba42c6c515d1f64ab6643771655012103f

MD58870cba7476f6a1b46af221a58fc98ed