Saving signatures


I have a APT2 running 5.0.2. I want to jailbreak this with Seasonpass but I am afraid that if I do so iTunes will default it to 5.3 and I will have to tether this

sucker to reboot. I want to keep this firmware but after reading all over the web I am discovering I cannot. I’ve tried using TinyUmbrella, looking for the Seasonpass beta version with allowed you to save the signatures.  Can someone please tell me what my options are with my situation.


Thank you.