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Subject sort of explains it all - I am hearing that XBMC sound isn't working in the 4.3.1 jailbreak and I have a fresh in the box ATV2, so no SHSH on file for older firmwares...Can I jailbreak this to an earlier version or am I stuck with 4.3.1 (and no sound) without a previously jailbroken ATV2?
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Yes, but do it now while Apple is still signing the older software.
Also, save your blobs when you do it so you can revert back whenever needed.
(Btw, there are instructions to do all this in the off topic section)
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Thanks, I wasn't aware they were signing the older software still.
Partpricer - You don't have any XBMC sound issues under 4.3.1? Full sound out of videos you play?
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Did you make use of AC3/DTS passthrough (5.1. surround sound ...)?
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I'm confused...Maybe Apple TV is only using 4.2.1 still. I just did an update and check for updates and my Apple TV 2 running 4.2.1 is telling me THAT is the latest version.
Is iOS out of sync now, still at 4.2.1 for Apple TV 2 and at 4.3.1 for iPhones? iTunes doesn't want to push me past 4.2.1 and neither does the Apple TV 2's built-in updater.
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Okay, answering my own question here. So iOS 4.2.1 for the Apple TV is the same as iOS 4.3.1 for other devices. Confusing, somewhat.
Anyway, I did attempt the partpricer routine above and am just getting static when I attempt to use DTS/AC3 via HDMI on my freshly installed and jailbroken ATV.
So for now I think it's safe to say that no sound under the latest jailbreak and Apple TV iOS listed as version 4.2.1.
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Apple TV 2G software version 4.1.1 is iOS 4.2.1
Software version 4.2.1 (2100) is IOS 4.3.1.
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Apple TV 2G software version 4.1.1 is iOS 4.2.1
Software version 4.2.1 (2100) is IOS 4.3.1.