View source for IPSW File Format

{{redirect|IPSW|the component of XPwn|ipsw}}
{{see also|Disk Image Formats}}
'''IPSW''' ('''iP'''od<sup>[[#Notes|[1]<nowiki/>]]</sup> '''S'''oft'''w'''are) files have the Magic Number 504B0304 (PK\003\004) and thus are [[wikipedia:ZIP (file format)|ZIP]] archives. They can be modified with typical zip/unzip tools (i.e. change extension to .zip and double click). IPSWs are used to deliver the [[iDevice|device's]] firmware to the end-user.

== Archive Structure ==
* [[Restore Ramdisk]]
* [[Update Ramdisk]] (some firmwares don't have one due to various reasons)
* [[:/|Filesystem]] (the largest [[Apple Disk Image|.dmg]] file)
* [[Device Tree]] (model specific)
* [[Kernelcache]] (model specific; processor specific on pre-[[S5L8930|A4]])
* BuildManifest.plist (first appeared in [[iOS|iPhone OS]] 3.0 beta 2)
* Restore.plist
* ''Firmware/''
** ''all_flash/''
*** ''all_flash.XXXXX.production/'' (model specific i.e. [[M68AP]], [[N82AP]], etc.)
**** [[S5L File Formats#IMG2|IMG2]]/[[IMG3 File Format|IMG3]] files
**** manifest
** dfu/''
*** [[iBEC]].XXXXX.dfu (model specific i.e. [[M68AP]], [[N82AP]], etc.)
*** [[iBSS]].XXXXX.dfu
*** [[WTF]].XXXXX.dfu (model specific and only for [[M68AP]], [[N82AP]], [[N45AP]], [[N72AP]]; not present in firmwares for the [[N88AP|iPhone 3GS]] and later, because it was used to patch issues with the DFU mode that was burned into the bootrom)
** [[Baseband Device|Baseband]] (may be one or many files depending on the model)

=== Example ===
Here are the contents of the [[Kirkwood 7A341 (iPhone2,1)|iPhone 3GS 3.0 (7A341)]] firmware IPSW:
* <code>[[:/|018-5302-002.dmg]]</code> (281214976 bytes)
* <code>[[Update Ramdisk|018-5304-002.dmg]]</code> (12769604 bytes)
* <code>[[Restore Ramdisk|018-5306-002.dmg]]</code> (12777796 bytes)
* <code><!--[[#BuildManifest.plist|-->BuildManifest.plist<!--]]--></code> (21097 bytes)
* <code>[[kernelcache]].release.s5l8920x</code> (4695492 bytes)
* <code><!--[[#Restore.plist|-->Restore.plist<!--]]--></code> (1763 bytes)
* ''<code>Firmware/</code>''
** ''<code>all_flash/</code>''
*** ''<code>all_flash.n88ap.production/</code>''
**** <code>[[AppleLogo|applelogo]].s5l8920x.img3</code> (9604 bytes)
**** <code>[[BatteryCharging0|batterycharging0]].s5l8920x.img3</code> (19716 bytes)
**** <code>[[BatteryCharging1|batterycharging1]].s5l8920x.img3</code> (24900 bytes)
**** <code>[[BatteryFull|batteryfull]].s5l8920x.img3</code> (76100 bytes)
**** <code>[[BatteryLow0|batterylow0]].s5l8920x.img3</code> (56772 bytes)
**** <code>[[BatteryLow1|batterylow1]].s5l8920x.img3</code> (65348 bytes)
**** <code>[[DeviceTree]].n88ap.img3</code> (44996 bytes)
**** <code>[[GlyphCharging|glyphcharging]].s5l8920x.img3</code> (20356 bytes)
**** <code>[[GlyphPlugin|glyphplugin]].s5l8920x.img3</code> (19332 bytes)
**** <code>[[iBoot (Bootloader)|iBoot]].n88ap.RELEASE.img3</code> (178500 bytes)
**** <code>[[LLB]].n88ap.RELEASE.img3</code> (67908 bytes)
**** <code>manifest</code> (341 bytes)
**** <code>[[NeedService|needservice]].s5l8920x.img3</code> (20484 bytes)
**** <code>[[RecoveryMode|recoverymode]].s5l8920x.img3</code> (47876 bytes)
** ''<code>dfu/</code>''
*** <code>[[iBEC]].n88ap.RELEASE.dfu</code> (104772 bytes)
*** <code>[[iBSS]].n88ap.RELEASE.dfu</code> (104772 bytes)

== Firmwares found in IPSW ==
Per http://newosxbook.com/bonus/vol1AppA.html
{| class="wikitable" 
|-
! Filename
! Use
|-
| ICE17-1.xx.xx.Release.bbfw
| Intel modem / baseband
|-
| Mav17-1.xx.xx.Release.bbfw
| Maverick modem / baseband
|-
| AOP/aopfw-iphone##aop.im4p
| Always on processor
|-
| Savage/Savage.B[0/2]-[Dev/Prod].[vt.]fw
| FaceID
|-
| Yonkers/Yonkers.EA01_F###_[Dev/Prod]fw
| FaceID (A12+)
|-
| SE/Stockholm##.RELEASE.sefw
| Secure Element
|-
| Maggie/AppleMaggieFirmwareImage.im4p
| ?
|-
| cpu_Multitouch.im4p
| Multitouch controller
|-
| isp/adc-petra-d3x.im4p
| Image Signal Processor
|-
| ane/h11_ane_fw_quin.im4p
| [[Apple Neural Engine]]
|-
| WirelessPower/WirelessPower.iphone##.im4p
| Wireless charging controller
|-
| SmartIOFirmwareCHIP.im4p
| [[T8020]] and later Smart I/O
|-
| board_CallanFirmware.im4p
| Haptics Firmware
|-
| ave/AppleAVE2FW.im4p
| Audio/Video Encoder
|-
| agx/armfw_g11p.im4p
| GPU Scheduler/Command Stream Processor
|-
| all_flash/sep-firmware.*.im4p
| Secure Enclave Processor
|-
| liquiddetect@2436~iphone-lightning.im4p
| Liquid Damage Detection
|-
| pmp/t8030pmp.im4p
| Power Management Processor
|-
| Rose/r1p0/ftab.bin
| U1 chip (Ultra Wideband)
|-
| vinyl_05.vnlfw
| eSIM
|-
| Veridian
| ? (Some form of signing/device integrity)
|}

== Notes ==
# IPSW files have been used since the very first iPod, though they have [http://www.freemyipod.org/wiki/Firmware a different format] than firmwares for iOS devices.

[[Category:File Formats]]