Jailbreak on Apple Tv 2

my name is Vincenzo.
This is my first message.
A few days ago I bought a used apple tv second generation only that the old owner has updated the latest sign available.
I have read some posts within this forum where it seems that it is possible to downgrade the firmware version and then do the jailbreak.
Is it correct ?

If you run the current SeasonPass it will install jail broken 5.3 firmware regardless of the firmware that is already installed.

But i don’t have shsh file. There are problem?

No. Apple is still signing 5.3 so it should be fine.

An untethered jailbreak can be completed on Seas0nPass automatically with no SHSH blobs.
Apple are still signing 5.3 for the Apple TV 2.