Upgrade from 5.2 to 5.3

Hello to all! I want to buy aTV Flash but first I want to know if I can upgrade from ios 5.2 to 5.3. Is Apple still signing firmware 5.3? thanks

I updated last night from 5.0.1 to the newest version of 6.1 then was able to downgrade using Seasonpass, so apple is still letting you install 5.3

Hi, AVA8C.

I know you have probably got this sorted by now, but for anyone else who is viewing this - this is highly not advised.
If you update as of this date, (July 2015), you will be updated to 6.2.1.

Hope this helps.

At present, Apple are still signing the firmware for 5.3 (as of 24-July-2015), in fact I have restored my ATV2 to 5.3 just two days ago!

Download the 5.3 IPSW from this link https://ipsw.me/all#AppleTV21 and restore via iTunes.

so what to do after i download the 5.01 version??