I am a new member and have spent several days reading through sticky's and gathering as much information as possible but I'm still a little bit confused. I have an Ipad 1 using 4.2.1. I would like to upgrade to the most recent firmware that is still available as an untethered jailbreak. The app store tells me I have several updates but it will not install them because I need 4.3.? or higher. Just a couple question hopefully someone can clarify for me. 1. Cydia says I have SHSH blobs for 4.2.1, 4.3, 4.3.3, and 4.3.5. I'm currently on 4.2.1 and have been since I purchased the Ipad. I do not know much about blobs other than what I've read in the sticky's on this forum. What is the most recent version of firmware that I can upgrade to and still have an untethered jailbreak? 2. When I updated if the firmware, does it keep all my existing apps installed (Cydia apps and App Store apps) or do I basically start from scratch and have to download everything again? 3. Assuming this is possible, is there a tutorial I can follow that tells me how to update the firmware and keep all my existing apps? Thanks in advance for any help.