Source

Direct communication from HackerDude, the WinterBreak jailbreak creator.

Quote: “SpringBreak will work on 5.19.2(.0.1) on KT5, PW5(SE), on Registered Kindles”

Public Status

• No GitHub repository under KindleModding org
• No listing on kindlemodding.org/jailbreaking/
• No MobileRead forum thread
• No public beta or release artifacts