Yes, IPSW files are safe to use as long as they are downloaded from trusted sources like iosfixkit.com.

What is an IPSW file?

An IPSW file is a firmware update file used by Apple devices, including iPhones, iPads, and iPods, for restoring or updating their operating system.

How do I install an IPSW file?

You can install an IPSW file using iTunes or Finder (on macOS Catalina and later). Download the correct IPSW file, connect your device, and use the 'Restore' option while holding Shift (Windows) or Option (Mac) to select the IPSW file.

Can I downgrade my iPhone using IPSW?

You can downgrade your iPhone using an IPSW file only if Apple is still signing the previous iOS version. Unsigned IPSWs cannot be restored via iTunes.

How do I check if an IPSW file is signed?

You can check the signing status of an IPSW file using iosfixkit.com, where we provide real-time updates on which versions are currently signed by Apple.

Can I use IPSW to jailbreak my device?

Some jailbreak tools require specific IPSW files, but installing an IPSW alone does not jailbreak a device. You need additional tools such as checkra1n or unc0ver.

Official Apple Firmware

Download iOS Firmware for iPhone 3G[S]

Signed and unsigned IPSW files for iPhone2,1. Direct downloads from Apple's CDN servers.

Product

Platform

Version

Download

Signed IPSWs

Restore Possible

iOS 6.1.6

10B500

Feb 21, 2014

Release Date

0.77 GB

Size

iOS 4.1

8B117

Mar 1, 2026

Release Date

0.37 GB

Size

Unsigned IPSWs

Cannot Restore

iOS 6.1.3

10B329

Mar 1, 2026

Release Date

0.77 GB

Size

iOS 6.1.2

10B146

Mar 1, 2026

Release Date

0.77 GB

Size

iOS 6.1

10B141

Mar 1, 2026

Release Date

0.77 GB

Size

iOS 6.0.1

10A523

Mar 1, 2026

Release Date

0.76 GB

Size

iOS 6.0

10A403

Mar 1, 2026

Release Date

0.76 GB

Size

iOS 5.1.1

9B206

Mar 1, 2026

Release Date

0.67 GB

Size

iOS 5.1

9B176

Mar 1, 2026

Release Date

0.67 GB

Size

iOS 5.0.1

9A405

Mar 1, 2026

Release Date

0.67 GB

Size

iOS 5.0

9A334

Mar 1, 2026

Release Date

0.65 GB

Size

iOS 4.3.5

8L1

Mar 1, 2026

Release Date

0.41 GB

Size

iOS 4.3.4

8K2

Mar 1, 2026

Release Date

0.41 GB

Size

iOS 4.3.3

8J2

Mar 1, 2026

Release Date

0.41 GB

Size

iOS 4.3.2

8H7

Mar 1, 2026

Release Date

0.41 GB

Size

iOS 4.3.1

8G4

Mar 1, 2026

Release Date

0.41 GB

Size

iOS 4.3

8F190

Mar 1, 2026

Release Date

0.41 GB

Size

iOS 4.2.1

8C148a

Mar 1, 2026

Release Date

0.39 GB

Size

iOS 4.0.2

8A400

Mar 1, 2026

Release Date

0.37 GB

Size

iOS 4.0.1

8A306

Mar 1, 2026

Release Date

0.37 GB

Size

iOS 4.0

8A293

Mar 1, 2026

Release Date

0.37 GB

Size

iOS 3.1.3

7E18

Mar 1, 2026

Release Date

0.28 GB

Size

iOS 3.1.2

7D11

Mar 1, 2026

Release Date

0.30 GB

Size

iOS 3.1

7C144

Mar 1, 2026

Release Date

0.30 GB

Size

iOS 3.0.1

7A400

Mar 1, 2026

Release Date

0.29 GB

Size

iOS 3.0

7A341

Mar 1, 2026

Release Date

0.29 GB

Size

Signed OTAs

iOS 6.1.6

10B500 Prereq:

Oct 4, 2015

Release Date

0.74 GB

Size

iOS 6.1.6

10B500 Prereq: 10B329

Feb 21, 2014

Release Date

0.01 GB

Size

iOS 6.1.6

10B500 Prereq: 10B141

Feb 21, 2014

Release Date

0.02 GB

Size

iOS 6.1.6

10B500 Prereq: 10A403

Feb 21, 2014

Release Date

0.07 GB

Size

iOS 6.1.6

10B500 Prereq: 10B146

Feb 21, 2014

Release Date

0.02 GB

Size

iOS 6.1.6

10B500 Prereq: 10A523

Feb 21, 2014

Release Date

0.07 GB

Size

Unsigned OTAs

iOS 6.1.3

10B329 Prereq: 10A523

Mar 1, 2026

Release Date

0.07 GB

Size

iOS 6.1.3

10B329 Prereq: 10B141

Mar 1, 2026

Release Date

0.02 GB

Size

iOS 6.1.3

10B329 Prereq: null

Mar 1, 2026

Release Date

0.74 GB

Size

iOS 6.1.3

10B329 Prereq: 10A403

Mar 1, 2026

Release Date

0.07 GB

Size

iOS 6.1.3

10B329 Prereq: 10B146

Mar 1, 2026

Release Date

0.02 GB

Size

iPhone 3G[S]

Technical Specifications

Model Identifier

iPhone 3G[S]

Board Configuration

n88ap

Platform

s5l8920x

Chip ID (CPID)

35104

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Download iOS Firmware for iPhone 3G[S]

Signed IPSWs

iOS 6.1.6

iOS 4.1

Unsigned IPSWs

iOS 6.1.3

iOS 6.1.2

iOS 6.1

iOS 6.0.1

iOS 6.0

iOS 5.1.1

iOS 5.1

iOS 5.0.1

iOS 5.0

iOS 4.3.5

iOS 4.3.4

iOS 4.3.3

iOS 4.3.2

iOS 4.3.1

iOS 4.3

iOS 4.2.1

iOS 4.0.2

iOS 4.0.1

iOS 4.0

iOS 3.1.3

iOS 3.1.2

iOS 3.1

iOS 3.0.1

iOS 3.0

Signed OTAs

iOS 6.1.6

iOS 6.1.6

iOS 6.1.6

iOS 6.1.6

iOS 6.1.6

iOS 6.1.6

Unsigned OTAs

iOS 6.1.3

iOS 6.1.3

iOS 6.1.3

iOS 6.1.3

iOS 6.1.3

iPhone 3G[S]

How to Install

Backup Your Data

Connect Device

Turn Off Find My

Install .ipsw File

Restore Backup