Help downgrade to Apple TV iOs 4.2.1

danmedhurst Wrote:The only bit that's not working is the h264 hardware decoding. the rest is fine and the team is working on the bits that are broken.

If you do not have your blobs, there is no going back. You're only option is to tether break on 4.3 and live with the issues until they are resolved.

Thank you guys for all the info !! I hope they fix the h264 decoding. I have decoded all my own media in h264 because i thought this is the best format for Apple TV 2.

If i look in the handbrake conversion tool i see this format as default. Wich default format are you guys using on your ATV2 with XBMC ?

Kind Regards,

JM

jmunnik Wrote:Thank you guys for all the info !! I hope they fix the h264 decoding. All the films that i have downloaded are h264 because i thought this is the best format for Apple TV 2.

If i look in the handbrake conversion tool i see this format as default. Wich default format are you guys using on your ATV2 with XBMC ?

They'll fix the hardware decoding. Apple made some changes to the API so the XBMC devs just need to update to incorporate those changes. At least one or two devs said they were working on it so shouldn't take too long and will almost certainly happen.

I always encode with h264 when using Handbrake since it's the default for the relevant devices (atv2, iphone). It's a safe bet that most people are doing the same.

XBMC crashing on h264/x264 files is temporary... my guess is we'll see an update within a week or so. Maybe it'll get fixed in the XBMC version that gets merged into the main trunk.

jd2157... don't guess, the dev's will have it done when they have it done... as davilla keeps saying he is concentrating on merging iOS port into the main branch.

jmunnik, you probably shouldn't admit to piracy on a forum that doesn't cater to piracy, rip your own content from your own media.

It is possible to revert to 4.2.1 without shsh blobs. To be brutally honest, I have no idea what "shsh blobs" even are, and I reverted after having accidentally updated.

You will need:
1) iTunes
2) ATV2 IPSW file for iOS 4.2.1 (Google search, took me a minute, but I found it)

Just download the IPSW, connect your ATV2 to your computer with the micro USB cable, then SHIFT-click the "restore" button that you normally use to restore/update. Shift-clicking allows you to choose a file to "update" from, rather than download the latest.

Who knows why Apple implemented this feature, but they gave you a way out of your mistake.

Don't know how this could work for you. I did this and got the message that "this device is not eligible for this build"! When did you do this... A few days back it worked cause apple still signed 4.2.1... But now it is over...

I think it was Friday that I did this. Well, if they prohibited it, then I can't help and apologize for cluttering up this thread.

I guess I just got lucky.

Oh, I just remembered, that you have to add something to your hosts file in windows to misdirect iTunes to a different server (other than Apple's) I can't for the life of me remember how to do that part, but I'll go back through my old threads and see if I can find it again.

*EDIT*
http://www.spiritjb.org/2010/11/downgrad...os-41.html

There you go

Well that is exactly what i did! I used this exact tutorial to do it, but got the message above:-( anybody else tried it?

Without SHSH blobs it is impossible to install 4.2.1. It will never happen.

Apple still signed the blobs for older versions during a few days after 4.3 was released. That's why this method worked. At the current time, Apple is no longer signing 4.2.1.

To be fair, I am far from an expert, nmat, so there could be (and probably is) something important that I'm missing here.

That said, this guy http://forum.xbmc.org/showthread.php?tid=96551 was successful with this method after everybody told him apple had stopped signing these files, as was I.

Granted, that was on the 11th (Friday), but it was indeed the day after Apple stopped signing them. I don't know if they can be re-used, but I still have that IPSW file if that would be helpful to anyone.