Today Apple has released the iOS 10.3.3 Beta 3, which means we're one step closer to the iOS 10.3.3 final version which will most likely stop the signing window of iOS 10.3.1, the safest iOS 10.3.x version for Jailbreak. Now that iOS 11 beta 1 is up, a lot of people upgraded from iOS 10.3.1 and iOS 10.3.2 to it just to experience the new beta features, but if you're amongst them, and you're interested in Jailbreak, it is the right time to downgrade back to iOS 10.3.1 while it is still signed. Keep in mind that it won't stay signed forever.
Saving the blobs is very important, but you should not rely on them as there is currently no way you can use them to downgrade without an exploit. The exploit Adam Donenfeld will publish somewhere in August might allow such downgrades, so if you have iOS 10.2 blobs saved as I've advised many months ago, you might be able to downgrade and Jailbreak with Yalu.
Speaking about iOS 10.3.3 Beta 3, it seem to have some baseband firmware update on iPhone 7 and some bug fixes and improvements, no additional features. The IPSW of it is already available on TheiPhoneWiki for those of you interested in it and if you're already running the Beta, you should have the update on the Settings.
iOS 10.3.3 Beta 3
iOS 10.3.1 / 10.3.2 Current Jailbreak Status (June Week 1), iOS 11 & New Downgrade
Current iOS 10.3.1 Signing Status
iOS 11 Full Review
How to Save SHSH2 Blobs