Sakura Development team member @dora2ios, perhaps best known for their part in developing the kok3shi jailbreak, has released a new work-in-progress developer-centric jailbreak tool called ayakurume for iOS 15 that utilizes the same checkm8 hardware-based bootrom exploit as the venerable checkra1n jailbreak tool.
Kok3shi developer launches ayakurume, another checkm8-based iOS 15 jailbreak for developers