Beta OTA Updates/iPhone/8.1

iPhone 4S

Users still on iOS 5.0 or 5.0.1 must update to 6.1.3 via OTA prior to installing OTA updates for iOS 8.0 or newer.

Version	Build	Prerequisite Version	Prerequisite Build	Release Date	OTA Download URL	File Size
8.1 beta 2	12B407	8.1 beta	12B401	7 October 2014 (2014-10-07)	597e2a6ef90391da5433b3dc98a1f78b2e545383.zip	29,119,346

iPhone 5

iPhone5,1

Version	Build	Prerequisite Version	Prerequisite Build	Release Date	OTA Download URL	File Size
8.1 beta 2	12B407	8.1 beta	12B401	7 October 2014 (2014-10-07)	8777536d2006dcd0e2087c08fcb4a5ec464cc5fd.zip	45,256,070

iPhone5,2

Version	Build	Prerequisite Version	Prerequisite Build	Release Date	OTA Download URL	File Size
8.1 beta 2	12B407	8.1 beta	12B401	7 October 2014 (2014-10-07)	94ad8eb1d14f1b70fbf04db2930fabd134a341ef.zip	45,451,260

iPhone 5c

iPhone5,3

Version	Build	Prerequisite Version	Prerequisite Build	Release Date	OTA Download URL	File Size
8.1 beta 2	12B407	8.1 beta	12B401	7 October 2014 (2014-10-07)	91d72b297323d587620c7c16af3f621f1b43e68e.zip	46,392,845

iPhone5,4

Version	Build	Prerequisite Version	Prerequisite Build	Release Date	OTA Download URL	File Size
8.1 beta 2	12B407	8.1 beta	12B401	7 October 2014 (2014-10-07)	b15cc1f9df3d631a91673977f206512c4b2955c5.zip	46,197,530

iPhone 5s

iPhone6,1

Version	Build	Prerequisite Version	Prerequisite Build	Release Date	OTA Download URL	File Size
8.1 beta 2	12B407	8.1 beta	12B401	7 October 2014 (2014-10-07)	d5fd13b14cfdff67f99ac1482373b519f196aa1c.zip	59,539,189

iPhone6,2

Version	Build	Prerequisite Version	Prerequisite Build	Release Date	OTA Download URL	File Size
8.1 beta 2	12B407	8.1 beta	12B401	7 October 2014 (2014-10-07)	a71aa1e6a130bbd2cbfe28aa6f9a75b51326eb4f.zip	58,666,557

iPhone 6

Version	Build	Prerequisite Version	Prerequisite Build	Release Date	OTA Download URL	File Size
8.1 beta 2	12B407	8.1 beta	12B401	7 October 2014 (2014-10-07)	a7c508262bae877ad483cfb2afd7ac9dc8311f1d.zip	65,574,976

iPhone 6 Plus

Version	Build	Prerequisite Version	Prerequisite Build	Release Date	OTA Download URL	File Size
8.1 beta 2	12B407	8.1 beta	12B401	7 October 2014 (2014-10-07)	e7661577a0057bf61f1e102f6994469feaeaf272.zip	66,544,973