atv2 4.3 (2557) cant jailbreak

I can’t use seas0npass to jailbreak because the restore fails saying it’s looking for 5.x on my atv2 instead of 4.3. Where can I get the old version of seas0npass that works with 4.3?

I can’t use atvflash because it’s not jailbroken yet. I can’t use TinyUmbrella to back up the blobs because Apple is not signing 4.3 anymore.