This error message typically occurs when trying to apply a minor update or "switcher" to the Smoke Patch 21 (SP21) v4
You cannot run an incremental update (like v4.5) without the base version. Download and install the SmokePatch21 v4 All-In-One version first. cannot update the patch sp21 v4 was not found in the updated
for eFootball PES 2021. It means the installer cannot locate the core v4 files required to apply the patch. Why This Error Happens This error message typically occurs when trying to
| Cause ID | Reason | Explanation | |----------|--------|-------------| | | Wrong patch order | You tried to apply SP21 v4 without having SP21 v3 or base SP21 installed first. | | C2 | Corrupted patch file | The downloaded patch executable or ZIP archive is damaged. | | C3 | Incorrect working directory | The updater expects to find extracted files in a specific folder (e.g., C:\UPDATES\SP21\V4\ ) but they are elsewhere. | | C4 | Version mismatch | Your software is older (e.g., v5.0) and SP21 v4 is designed for v6.0 or newer. | | C5 | Missing environment variable | Some enterprise apps use %PATCHROOT% or %SP21_HOME% ; if undefined, the lookup fails. | | C6 | Registry key deletion | Previous uninstalls removed keys like HKLM\Software\YourApp\SP21\v4 . | It means the installer cannot locate the core
The error message typically occurs when installing a version update (like 21.4.x) for SmokePatch21 (SP21) for eFootball PES 2021 . This happens because the installer cannot find the required base installation of SP21 v4 (version 21.4.0) in your game folder . Why This Happens
: Since SP21 v4 is an AIO version, many users find it more effective to delete the existing "download" folder and "sider" components within the game directory and perform a fresh install of the v4 base version before applying smaller fixes.