It often takes 2–3 tries for the exploit to "take." If it fails, reboot and try again.
If you’d like a (Windows/Mac), I can provide that instead. Let me know.
October 26, 2023 Subject: Feasibility and Availability of "No PC" Jailbreak Solutions for iOS 12.5.7
The term "No PC jailbreak" generally refers to one of two methods, neither of which is currently viable for iOS 12.5.7:
While Unc0ver is great, it often has compatibility issues on the very specific 12.5.7 build compared to Chimera. 🚀 Pro Tip: Use a PC if possible