Maybe you should give this a shot if you are lucky, Maybe iwas lucky , i tried the cydia blobs using ifaith 1.5.6
I Finally jaibreaked ATV2 UNTHETEHRED to Ios 6.1 (5.2) 10b144B, Installed Nito TV, & XBMC frodo 12.1 . Using Seasons Pass never worked. Always give 3194 error
Here is my story ,like everybody i accidentally restored the stock apple firmware 6.1. 3 (5.2.1) last 23rd .I downgraded to 4.4.2 using Ped’s Method Thethered. It worked well but doing a thethered boot was very hard .
I Restored Back to the Stock Apple firmware 6.1. 3 (5.2.1) again the socond time yesterday
1.Save the blobs of 6.1. 3 (5.2.1) Using Ifaith 1.5.6 & ising Tiny umbrella 6.2.2 . Ifaith will say saving the blobs to cydia & to your computer…
Next I Use ifaith to download Ios 6.1 (5.2 ) Cydia blobs and saved it to a folder on my destop
Create IPSW with stock apple 10b144b & using Ios 6.1 (5.2 ) Cydia blobs named xxxxxxx_Apple_TV_2-5.2_(10B144b)-blobs.ifaith
I shift restore using itunes latest ver 11 in Windows 7 32 bit pro
Successfully downgraded to Ios 6.1 (5.2 ) Apple STOCK FIRMWARE. and not jailbroken yet. Dont unplug anything yet (the usb & the power still plugged in)If possible quickly re-save the blobs again .
To jailbreak I use snowbreeze to create 00xxxxxxxx_sn0wbreeze_Apple_TV_2-5.2-10B144b_signed.ipsw and using the cydia blobs. Let it run for awhile & it will be created on the desktop
8 Shift restor using Itunes 11 . restored successfull when i looked at apple tv logs although it returns error 1602 but i just ignore it. Led light stabilize
use nito installer to detect its ip adddress af ATV2, can Shsh using putty to install xbmc 12.1.
I believe that the one labelled 6.1.4 is actually the 5.3 firmware. The later one will be a 6.x release of firmware. On that basis you cannot go to 5.2 as there is no corresponding shsh blobs.