Can I restore my jailbroken iPhone 3GS without further problems?

So I recently purchased an iPhone 3GS with cydia(jailbroken) and I restored it to remove the jailbreak.iTunes automatically started downloading iOS 5.1.1 and there was an issue there with cydia or something and I was unable to activate my phone. I then had to hacktivate it with another jailbreak, and to gain service i had to install iPad baseband and install ultrasn0w. Then I finally was able to use my phone again. I'm having issues with springboard crashes when I answer calls and I don't want this. Can I restore my phone to get rid of the jailbreak without anymore issues? I have ios 5.1.1 now when I hacktivate it. So will I run into more problems? I really don't want to have to deal with it again, it was a real pain in the a**. If there's any risk I won't do it.

Yes you can always restore and there will be no problems.

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