Well-known Chinese jailbreak developer team, Pangu, demonstrated an iOS 8.4.1 jailbreak on iPhone 6 at the HackPwn2015 security conference on 21 August.
The information about the jailbreak demonstration has been posted in HackPwn's Weibo account. Currently the information about the jailbreak is scanty, but the posting suggests a jailbreak was demonstrated for iPhone 6 powered with iOS 8.4.1 .
It appears that it is just a demonstration indicating a jailbreak is possible on iOS 8.4.1, despite the fact that Apple has patched a total of 40 security flaws including the ones used by the TaiG team for their untethered jailbreak tool for iOS 8.1.3-8.4.
A few of the patches include AppleFileConduit (CVE-ID, CVE-2015-5746: evad3rs, TaiG Jailbreak Team), Air Traffic (CVE-2015-5766: TaiG Jailbreak Team), Backup (CVE-2015-5752 : TaiG Jailbreak Team), Code Signing (CVE-2015-3806: TaiG Jailbreak Team), Code Signing (CVE-2015-3803: TaiG Jailbreak Team), Code Signing (CVE-2015-3802 CVE-2015-3805: TaiG Jailbreak Team) and IOHIDFamily (CVE-2015-5774: TaiG Jailbreak Team).
Nevertheless, the Pangu team does not have any intention of releasing a public version of the iOS 8.4.1 jailbreak, as the iOS 9 release is less than a month away, believes iDownloadblog.
In June 2015, the team had demoed an iOS 8.3 jailbreak at the 2015 Mobile Security Conference (MOSEC), just a few days before the TaiG team could bring out an untethered utility for iOS 8.3.
The Pangu team was the first to jailbreak iOS 8 and release untethered tools for iOS 8-iOS 8.1 as well as iOS 7.1.x.