If you are playing on a console (PS4/PS5), you cannot use Sider-based bootpacks. You would instead need a comprehensive Option File to update kits and logos, as console modding is more restricted.
The is a popular community-driven modification designed to refresh the visual realism of eFootball PES 2021 (and compatible mods like SP Football Life). These packs typically replace generic footwear with high-definition, licensed models from major brands. Key Features of Modern Bootpacks Baixe o arquivo PES 2021 Update Bootspack 15.12...
Use a tool like WinRAR to unzip the downloaded .rar or .zip file. If you are playing on a console (PS4/PS5),
Copy the new boot folder into livecpk/boot-root . Baixe o arquivo PES 2021 Update Bootspack 15.12...