NonUI

This is a documented list of known NonUI firmwares, used by Apple engineers in California to do engineering tests on prototype devices and also by factory workers on production ones during manufacturing. NonUI is based on production iOS ones, but adapted for internal engineering tests, development and debugging.

An iPhone 4 deathstar prototype. These models usually boot NonUI build 8A133.

An iPhone 12 Pro prototype booted to NonUI build 18A23581a.

They are known as "NonUI (No User Interface)" builds, because most applications are command line ones and the UI is different to that of a regular device. The SpringBoard replacement, named SwitchBoard, allows the launching of a GUI for some of those applications. Unlike production iOS firmwares, NonUI ones have the following differences:

• DEVELOPMENT fused bootloaders in \Firmware\dfu\ and \Firmware\all_flash\all_flash.[board codename].factory[fa/sa]\.
• FACTORY fused SEP firmware in \Firmware\all_flash\all_flash.[board codename].factory[fa/sa]\
• DEVELOPMENT fused kernelcache with more symbols (located in /System/Library/Caches/com.apple.kernelcaches on the filesystem), and with individual kexts in /System/Library/Extensions.
• DEVELOPMENT dyld_shared_cache in /System/Library/Caches/com.apple.dyld.
• DEBUG fused baseband firmware in \Firmware\.
• Skankwerk (gear) logo image file in \Firmware\all_flash\all_flash.[board codename].factoryfa\.
• /AppleInternal folder, which the hierarchy inside get priority over hierarchy in /.
• No SpringBoard, requires the use of daemons to launch SwitchBoard.app as a multi-app launcher instead.
• /usr and subfolders contain many UNIX command line utilities.
• SSH daemon is pre-installed as dropbear, can be connected to over usb
• Boot loader passes arguments to kernel (unlike RELEASE boot loaders as of iOS 5.0) which makes it easy to disable AMFI
• It has some additional Private Frameworks in /System/Library/PrivateFrameworks for internal GUI apps and command line utilities.
• Most internal applications require the use of SkankKit (replacement for UIKit in NonUI firmwares) to produce special layers such as text on the framebuffer.

Unlike regular iOS Firmwares, NonUI ones are distributed in "restore bundles". Restore bundles are like contents of IPSW files which can be restored on devices using internal restore software such as PurpleRestore or AirSwitch. Release and NonUI "restore bundles" have the same packaging structure (bootloaders, kernel, restore ramdisk, update ramdisk and root filesystem), but can also include other files such as debug and development variants of each respective component.

Some interesting facts about NonUI

• Design: Apple seems to use the same GUI design from the production firmware to the factory one.

Production iOS 1.x to 6.x skeuomorphism design is also present on 1.x to 7.x NonUIs, but seems more excessive than production ones. For example, the "skankwerk" boot logo represents a real gear and many GUI icons are realistic or simply photos of real life things (especially in Operator). For newer versions, production iOS 8.x and above flat design is mostly used in 8.x and above NonUIs. For example, the new "Skankwerk" boot logo is a flat, simple white gear. Some newer internal applications like Earthbound also use a "flat" design.

• Other: The "skank" word is used to name multiple elements of NonUIs. For example, there is "SkankPhone", "SkankBattery" (the green battery shown in SwitchBoard), "Skankwerk" logo, "SkankKit" framework, "PurpleSkank" (used by BurnIn) and most likely others. The "skank" word seems to be a reference to "Skunkworks" projects, which are secrecy projects that are usually innovative. Read more about "Skunkworks" on Wikipedia.

iPhones

iPhone 2G

Version	Build	Codename	Baseband	Comments
1.0	1A420	Alpine	03.06.01_G[1]	Originally available here, but was soon taken down.
	4A57		04.02.13_G	-
1.1.2	3B48		04.02.13_G	-
1.1.3	4A102a		04.04.05_G	-

iPhone 3G

Version	Build	Codename	Baseband	Comments
2.0.2	5C274a	Big Bear?	?	-

iPhone 3GS

Version	Build	Codename	Baseband	Comments
3.0	7A2168d	Kirkwood?	?	From @1nsane_dev on Twitter
3.1b	7C108b	Sierra?	?	-
	7C144	Northstar?	?	-

iPhone 4

Version	Build	Codename	Baseband	Comments
4.0	8A133	Apex?	01.32.01	-
	8A2062a		?	-
	8A2130h	ApexNanshan	?	-
	8A2180g		01.42.01	-
4.2	8E5074b	Phoenix?	?	Found on an FCC test report [2]
5.1	9B3145a	HoodooYabuli	?	-
	9B3176b		?	-
	9B3176n		1.0.10	-

iPhone 4S

Version	Build	Codename	Baseband	Comments
5.0	9A2264r	TellurideNanshan	?	-
6.0	10A23941a	SundanceNanshan	2.0.0.2	-

iPhone 5

Version	Build	Codename	Baseband	Comments
6.0	10A23110j	SundanceNanshan?	?
	10A23110z	SundanceNanshan	?	-
	10A23941s	SundanceNanshan?	?	-
	10A316	Sundance	1.7.00	-

iPhone 5c

Version	Build	Codename	Baseband	Comments
7.0	11A63840h	InnsbruckTianshan	?	From @mcg29_ on Twitter [3]
11A93840f	InnsbruckAni?	?	-
11A93840l	InnsbruckAni	?	-
7.1	11D31620l	Sochi	?	-
	11D31620u	SochiYabuli	?	-

iPhone 5s

Version	Build	Codename	Baseband	Comments
7.0	11A22051f	Innsbruck?	?	From @DongleBookPro on Twitter
	11A24580o	InnsbruckNanshan	1.00.05	-
	11A24581c		?	-
	11A24581k		?	From @1nsane_dev on Twitter
	11A360		7.02-16	Found on an FCC test report [4]
	11A93840f	InnsbruckAni?	?	Originally found on a MacRumors post

iPhone 6

Version	Build	Codename	Baseband	Comments
8.0	12A22121a	Okemo?	?	-
	12A24580o	Okemo	?	-
	12A310	Okemo	0.26.01	Found on an FCC test report [5]
	12A93311h		1.00.01	-
	12A93650o	OkemoAni	1.00.05	-
	12A93650z		?	From @AppleInternalsh on Twitter
	12A93651a		1.00.05	-
	12A93651b		1.00.05	-
8.3	12F69	Stowe?	?	Seen on iFixit's forum [6]
9.0	13A83261u	MonarchSajo	?	From @CollectorApple on Twitter
	13A83262c		?	From @ThermalDOE on Twitter

iPhone 6 Plus

Version	Build	Codename	Baseband	Comments
8.0	12A22121a	Okemo?	?	-
	12A23410x	Okemo?	?	from @DongleBookPro on Twitter

iPhone 6s

Version	Build	Codename	Baseband	Comments
9.0	13A93051l	MonarchAni	0.37.08	-
	13A93051r	MonarchAni?	?	-
	13A93420d	Monarch?	?	-
	13A93420i		?	From @AppleInternalsh on Twitter
	13A93420m		1.00.05	-
10.0	14A83432m	Whitetail?	?	From @OkemoZurs on Twitter

iPhone 6s Plus

Version	Build	Codename	Baseband	Comments
9.0	13A22120w	Monarch?	?	-
	13A23161b	MonarchNanshan	?	-

iPhone SE (1st generation)

Version	Build	Codename	Baseband	Comments
9.3	13E180	Eagle?	4.70.10	Found on an FCC test report [7]

iPhone 7

Version	Build	Codename	Baseband	Comments
10.0	14A22580n	Whitetail?	0.16.01-3	Found on an FCC test report [8]
	14A22881a		?	-
	14A92340t		?	-
	14A93012r	WhitetailAni	?	-
	14A93013a		?	-

iPhone 7 Plus

Version	Build	Codename	Baseband	Comments
10.0	14A22161a	WhitetailAni?	?	-
	14A22181a		?	-

iPhone 8

Version	Build	Codename	Baseband	Comments
11.0	15A93261h	TigrisAni	00.34.09	-
	15A93720p		?	From @AppleInternalsh on Twitter.
	15A93720r		?	-

iPhone 8 Plus

Version	Build	Codename	Baseband	Comments
11.0	15A93260r	Tigris	?	-
	15A93621f		?	From @1nsane_dev on Twitter

iPhone X

Version	Build	Codename	Baseband	Comments
11.0	15A783601x	TigrisAni	?	-
	15A783601y		?	-

iPhone XR

Version	Build	Codename	Baseband	Comments
12.0	16A13580x	Peace	?	From this eBay listing
	16A13580z		?	From @1nsane_dev on Twitter
	16A13581a		?	From @ThermalDOE on Twitter
	16A73281c		?	-

iPhone XS

Version	Build	Codename	Baseband	Comments
12.0	16A93020u	PeaceAni	?	-

iPhone XS Max

Version	Build	Codename	Baseband	Comments
12.0	16A23250u	Peace?	?	From @1nsane_dev on Twitter.
	16A22481b		?	From @YRH04E on Twitter

iPhone 12 Pro

Verison	Build	Codename	Baseband	Comments
14.1	18A23581a	Azul?	?	From @1nsane_dev on Twitter

iPhone 12 Pro Max

Verison	Build	Codename	Baseband	Comments
14.0	18A23121e	Azul	?	Found on an FCC test report [9]
	18A311		?	From @BenGeskin on Twitter

iPads

iPad (1st generation)

Version	Build	Codename	Baseband	Comments
3.2	7B3341e	Wildcat	?	-
	7B5286a		?	Found by SonnyDickson, documented on 9to5mac

iPad (2nd generation)

Version	Build	Codename	Baseband	Comments
4.3	8F3178a	Durango	?	-
	8F3191d		?	-

iPad (3rd generation)

Version	Build	Codename	Baseband	Comments
5.1	9B87	Hoodoo?	?	Found on an FCC test report [10]

iPad (4th generation)

Version	Build	Codename	Baseband	Comments
6.0	10A33901a	Sundance?	?	-

iPad (5th generation)

Version	Build	Codename	Baseband	Comments
10.3	14E61810k	Erie?	?	From @AppleInternalsh on Twitter
	14E62210l		?	From @AppleInternalsh on Twitter
10.3.2	14F60900i	Franklin	?	From @AppleInternalsh on Twitter
	14F60900l		?	From @mcg29_ on Twitter

iPad (6th generation)

Version	Build	Codename	Baseband	Comments
11.3	15E61570l	Emet?	?	Found on an FCC test report [11]
	15E61570m		?	This iPad is the only device that started with 11.3, so it is safe to assume it is this device. From @mcg29_ on Twitter

iPad mini (1st generation)

Version	Build	Codename	Baseband	Comments
6.0	10A378	Sundance?	?	Found on an FCC test report [12]
	10A63970m	SundanceTaosTianshan	?	-
	10A63970v		?	-
	10A63971b		?	-

iPad mini (2nd generation)

Version	Build	Codename	Baseband	Comments
7.0.3	11B64940j	InnsbruckTaos?	?	-
10.3	14E62210l	Erie?	?	-

iPad mini (4th generation)

Version	Build	Codename	Baseband	Comments
8.4	12H33	Donner?	?	Found on an FCC test report [13]
	12H60160o		?	-
9.0	13A62950o	Monarch?	?	-
9.0.2	13A64520d	MonarchTianshan	4.02.00	From @AppleInternalsh on Twitter.

iPad mini (5th generation)

Version	Build	Codename	Baseband	Comments
12.2	16E31120n	PeaceEYabuli?	?	From @laobaiTD on Twitter
	16E31520i		?	Found on an FCC test report [14]

iPad Air (1st generation)

Version	Build	Codename	Baseband	Comments
7.0	11B34210y	InnsbruckTaosYabuli	?	This is for the iPad4,2 model.
7.0.1	11B34640l	Innsbruck?	?	-

iPad Air (2nd generation)

Version	Build	Codename	Baseband	Comments
8.1	12B331	OkemoTaos?	?	Found on an FCC test report [15]
	12B33610i		?	From journaldulapin.com [16].

iPad Air (3rd generation)

Version	Build	Codename	Baseband	Comments
12.2	16E31120m	PeaceEYabuli	?	-
	16E31520i		?	Found on an FCC test report [17]

iPad Pro (unreleased)

Version	Build	Codename	Baseband	Comments
9.0	13A165	Monarch	2.15.00 (debug)	This comes as a Restore Bundle, and is for J98/99AP

iPad Pro (9.7-inch) (1st generation)

Version	Build	Codename	Baseband	Comments
9.3	13E31820k	Eagle?	?	Found on an FCC test report [18]

iPad Pro (12.9-inch) (1st generation)

Version	Build	Codename	Baseband	Comments
9.1	13B72	Boulder?	?	Found on an FCC test report [19]

iPad Pro (12.9-inch) (2nd generation)

Version	Build	Codename	Baseband	Comments
10.3	14E232	Erie?	?	Found on an FCC test report [20]
	14E32020u		?	Found on an FCC test report [21]

iPad Pro (10.5-inch)

Version	Build	Codename	Baseband	Comments
10.3	14E22020w	Erie?	?	Found on an FCC test report [22]

iPad Pro 12.9 (5th generation)

Version	Build	Codename	Baseband	Comments
14.5	18E20700y	AzulE?	?	Found on a FCC test report [23]

iPods

iPod touch (1st generation)

Version	Build	Codename	Comments
1.1	3A53	Snowbird	Found on an FCC test report [24]

iPod touch (3rd generation)

Version	Build	Codename	Comments
3.1	7C1023e	Inferno?	-
	7C1095a		-
	7C144	Northstar?	-

iPod touch (4th generation)

Version	Build	Codename	Comments
4.1	8B1016c	Baker	From this ebay listing by hap plain

iPod touch (5th generation)

Version	Build	Codename	Comments
6.0	10A351	Sundance?	Found on an FCC test report [25]

iPod touch (6th generation)

Version	Build	Codename	Comments
8.3	12H1150f	CopperJade	From @OkemoZurs on Twitter.
8.4	12H10570d		From @1nsane_dev on Twitter.
9.3	13C75	Castlerock	-