Currently, Apple's latest firmware is iOS 10.3.3 and developers have been seeded with iOS 11. If you accidentally update or restore, you'll find yourself on iOS 10.3.3.
Jonathan Levin, author of MacOS and iOS Internals, recently said that a jailbreak of iOS 10.3.2 is possible thanks to a libxpc vulnerability discovered by Ian Beer of Google Project Zero. If you are on 10.3.2 and you want to jailbreak, take extra care not to update.
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