INSTRUCTIONS:
Download and install Mina Loader at here: Mina Loader HERE
Step 1: Put iDevices to DFU mode first, then open Mina Loader and flow step like on this tool till show done
Step 2: Open tool Mina USB Patcher 2.0. Download here: Mina USB Patcher
Step 3: Open checkra1n 0.12.2 and jailbreak like normal
Step 4: Open tool Mina Removal
JAILBREAK iOS 14.4 Done 100%
SERVICE LINK :
https://www.joker-unlock.com/imei-service/mina-patcher 
TO GET FAST SUPPORT USE THE CONTACT INFO BELLOW:
www.joker-unlock.com
WhatsApp: +16286663599
Telegram:@JokerUnlockOfficial
Email :
[email protected]