(adsbygoogle = window.adsbygoogle || []).push({}); Is it safe? I need as much info as possible as Theres a few Options. If i Restore PS3 System or Restore Default Settings or Format Utility will i loose my CFW? Ive heard that these three options are dangerous. Also if so or if not is it any different in the Recovery Menu? Im on rebug 4.70 DEX

They are not. Nothing will make you lose your jailbreak besides updating to a OFW manually.