Now it is time to download TinyUmbrella 6.13.00 and save iOS 6.1.3 SHSH Blobs for future downgrade. Famous hacker and developer, semaphore a.k.a ‏@notcom, has just released the new 6.13.00 version to support iOS 6.1.3 firmware. You can get it for Mac and Windows computers. TU is the best tool to save blobs locally. Also you can use TinyUmbrella to request blobs from Cydia but it is much better to save them locally on the computer. So follow link below to get it right now. Download TinyUmbrella for iOS 6.1.3 [direct links] According to semaphore he planned to add APT validation support but he would do than in the next update - 6.13.01: Also this tool is the best simply because it has Mac OS X support which doesn't has iFaith, for example. As for me, both these tool are the best to save SHSH blobs and then use them for iOS downgrade. So don't waste your time and do it now because soon Apple will release new update and stop sign 6.1.3 SHSH.