Coolstar has released Electra 1.0.3 iOS 11 jailbreak to fix the intermittent freezing issue, which was affecting some users.
Here’s the complete changelog of Electra 1.0.3 iOS 11 Jailbreak:
Revert change to XPC in xpcproxy in beta 11
Fix intermittent freezing issues that would affect certain devices on beta 10 -> 1.0.2
Coolstar has pointed out that bad tweaks may still cause a problem, which is probably the reason some users are still reporting the freezing issue with Electra 1.0.3:
"Note: Bad tweaks can still cause problems even on 1.0.3
Most notably, if a daemon is installed into /Library/LaunchDaemons and the binary is missing the “platform-application” entitlement. launchd on iOS 11 will constantly loop trying to load the daemon as it’s killed by Sandbox."
He has said that the problem is not with Electra iOS 11 jailbreak “but a problem with said tweaks that are loading Launch Daemons.”
"Also, Safe Mode only protects against backboardd/SpringBoard crashes If a tweak crashes a system daemon, it’ll get stuck in a crash loop, which definitely would cause freezing"
You can download the latest version of Electra IPA from the official website. You will need to use Cydia Impactor to sideload the Electra IPA and then run the process to jailbreak your iOS device. It will also install Cydia for iOS 11 during the jailbreak process.
Source: iPhonehacks