Saving signatures

Hello

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.

 

Gil