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 15

Signed and unsigned IPSW files for iPhone15,4. Direct downloads from Apple's CDN servers.

Product

Platform

Version

Download

Signed IPSWs

Restore Possible

iOS 26.3

23D127

Feb 11, 2026

Release Date

9.45 GB

Size

Unsigned IPSWs

Cannot Restore

iOS 26.2.1

23C71

Jan 26, 2026

Release Date

9.42 GB

Size

iOS 26.2

23C55

Dec 13, 2025

Release Date

9.42 GB

Size

iOS 26.1

23B85

Nov 3, 2025

Release Date

9.41 GB

Size

iOS 26.0.1

23A355

Sep 29, 2025

Release Date

9.28 GB

Size

iOS 26.0

23A341

Sep 15, 2025

Release Date

9.28 GB

Size

iOS 18.6.2

22G100

Aug 20, 2025

Release Date

8.62 GB

Size

iOS 18.6.1

22G90

Aug 14, 2025

Release Date

8.62 GB

Size

iOS 18.6

22G86

Jul 29, 2025

Release Date

8.62 GB

Size

iOS 18.5

22F76

May 12, 2025

Release Date

8.62 GB

Size

iOS 18.4.1

22E252

Apr 16, 2025

Release Date

8.62 GB

Size

iOS 18.4

22E240

Mar 31, 2025

Release Date

8.62 GB

Size

iOS 18.3.2

22D82

Mar 11, 2025

Release Date

8.31 GB

Size

iOS 18.3.1

22D72

Feb 10, 2025

Release Date

8.31 GB

Size

iOS 18.3

22D63

Jan 27, 2025

Release Date

8.31 GB

Size

iOS 18.2.1

22C161

Jan 6, 2025

Release Date

8.37 GB

Size

iOS 18.2

22C152

Dec 11, 2024

Release Date

8.37 GB

Size

iOS 18.1.1

22B91

Nov 19, 2024

Release Date

8.05 GB

Size

iOS 18.1

22B83

Oct 28, 2024

Release Date

8.05 GB

Size

iOS 18.0.1

22A3370

Oct 3, 2024

Release Date

8.02 GB

Size

iOS 18.0

22A3354

Sep 16, 2024

Release Date

8.01 GB

Size

iOS 17.7

21H16

Sep 16, 2024

Release Date

7.53 GB

Size

iOS 17.6.1

21G101

Aug 19, 2024

Release Date

7.53 GB

Size

iOS 17.6.1

21G93

Aug 7, 2024

Release Date

7.53 GB

Size

iOS 17.6

21G80

Jul 29, 2024

Release Date

7.53 GB

Size

iOS 17.5.1

21F90

May 20, 2024

Release Date

7.54 GB

Size

iOS 17.5

21F79

May 13, 2024

Release Date

7.53 GB

Size

iOS 17.4.1

21E237

Mar 27, 2024

Release Date

7.48 GB

Size

iOS 17.4.1

21E236

Mar 21, 2024

Release Date

7.48 GB

Size

iOS 17.4

21E219

Mar 5, 2024

Release Date

7.48 GB

Size

iOS 17.3.1

21D61

Feb 8, 2024

Release Date

7.40 GB

Size

iOS 17.3

21D50

Jan 22, 2024

Release Date

7.40 GB

Size

iOS 17.2.1

21C66

Dec 19, 2023

Release Date

7.40 GB

Size

iOS 17.2

21C62

Dec 11, 2023

Release Date

7.40 GB

Size

iOS 17.1.2

21B101

Nov 30, 2023

Release Date

7.47 GB

Size

iOS 17.1.1

21B91

Nov 8, 2023

Release Date

7.47 GB

Size

iOS 17.1

21B80

Oct 25, 2023

Release Date

7.47 GB

Size

iOS 17.0.3

21A360

Oct 4, 2023

Release Date

7.45 GB

Size

iOS 17.0.2

21A350

Sep 21, 2023

Release Date

7.45 GB

Size

Signed OTAs

Unsigned OTAs

iOS 9.9.17.0

21A6331 Prereq:

Sep 18, 2023

Release Date

5.88 GB

Size

iPhone 15

Technical Specifications

Model Identifier

iPhone 15

Board Configuration

D37AP

Platform

Chip ID (CPID)

33056

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Download iOS Firmware for iPhone 15

Signed IPSWs

iOS 26.3

Unsigned IPSWs

iOS 26.2.1

iOS 26.2

iOS 26.1

iOS 26.0.1

iOS 26.0

iOS 18.6.2

iOS 18.6.1

iOS 18.6

iOS 18.5

iOS 18.4.1

iOS 18.4

iOS 18.3.2

iOS 18.3.1

iOS 18.3

iOS 18.2.1

iOS 18.2

iOS 18.1.1

iOS 18.1

iOS 18.0.1

iOS 18.0

iOS 17.7

iOS 17.6.1

iOS 17.6.1

iOS 17.6

iOS 17.5.1

iOS 17.5

iOS 17.4.1

iOS 17.4.1

iOS 17.4

iOS 17.3.1

iOS 17.3

iOS 17.2.1

iOS 17.2

iOS 17.1.2

iOS 17.1.1

iOS 17.1

iOS 17.0.3

iOS 17.0.2

Signed OTAs

Unsigned OTAs

iOS 9.9.17.0

iPhone 15

How to Install

Backup Your Data

Connect Device

Turn Off Find My

Install .ipsw File

Restore Backup