So, like quite a lot of people on here (i guess), i'm currently jailbroken on 3.1.2 on a 3rd gen 8gb. I do not have my SHSH blobs backed up for 3.1.2. With the recent news on jailbreaks etc, i've been seriously considering updating to 3.1.3 in order to save the blobs and safe guard a restore for the future. I would then be able to deowngrade using the 2nd gen firmware with Coca Cola's method. Basically, I know there won't be a 3.1.3 JB, but would saving the blobs help me in future if I needed to restore for any reason, or would i still be limited by the current build Apple was signing? Thanks guys.