03/03/2019 - v3.0.0~b39 was released for public testing with the following changes:

• Make it install NoBetaAlert only if the device is running a beta firmware and remove if it is not
• Make it install LetMeBlock only if the device is running iOS 12.0 or higher and remove if it is not
• Improve the nvram patch to increase the performance of the jailbreak
• Add more code for debugging possible issues
• Fix Clear Diagnostics Data
• Fix a kernel memory leak
• Update the offsets cache to not cache an unused offset
• Dump the nvram variables list
• Fix jailbreaking after a unsuccessful bootstrap extraction
• Reload mDNSResponder before backboardd when loading tweaks without enabling Reload System Daemons
• Update the APT lists cache file for repositories
• Update the local APT repo

https://github.com/pwn20wndstuff/Undecimus/releases