Downgrading an iPod Touch 5th Generation to iOS 6.1.3 is not officially supported by Apple, but it is achievable through unofficial methods. Because Apple is no longer "signing" iOS 6 for this device, you generally have two paths: a (easiest/most common) or a tethered downgrade (complex). 1. The Dual-Boot Method (Recommended)
This paper explores the technical possibility of downgrading the iPod Touch 5th Generation (iPod5,1) from its native iOS 7–9 environment to iOS 6. It examines the hardware security mechanisms implemented by Apple, specifically the Secure Boot Chain and the "APTicket" (SHSH Blob) system. The analysis distinguishes between the A5 processor architecture of the iPod Touch 5 and the A4 architecture of its predecessor, highlighting the absence of the "Limera1n" hardware exploit. Furthermore, this paper details the only viable method for executing such a downgrade: the creation of a "Dual-Boot" environment using the toolery developed by Joshua Hill (posixninja), known as "odysseusOTA," while addressing the severe functional limitations of this procedure. downgrade ipod touch 5 to ios 6
: If you are one of the few who saved blobs years ago, you can use Legacy-iOS-Kit to restore to iOS 6 permanently. Step-by-Step Guide: CoolBooter (Dual-Boot) dual-boot Downgrading an iPod Touch 5th Generation to