Here is a handy PowerShell script created by RFootball for eFootball Pro Evolution Soccer 2021 to easily relink boot IDs.
It saves a lot of time compared to manual hex editing. All you have to do is drag and drop your boot folder (e.g., k2026) onto the *.bat file, enter the new ID, and the script will automatically patch the .fpk files, bulk-rename the .ftex, and update the folder name in a flash.
It uses native Windows PowerShell, so it's completely plug-and-play. Hope you guys find it useful!
How to Use:
Drag and drop your boot folder (e.g., k2026) onto the *.bat file, enter the new ID, and the script will automatically patch the .fpk files, bulk-rename the .ftex, and update the folder name
Credits:
Boots & Gloves Relinker made by RFootball

















