Download and install Mina Loader at here: Mina Loader
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 3.2. Download here: Mina USB Patcher
Step 3: Open checkra1n 0.12.2 and jailbreak like normal
Step 4: Open tool Mina Removal
https://www.mediafire.com/file/icix0ftzxu1t54f/minaUSB3.2.pkg/file