If you need a 2023-level Windows 7 64-bit ISO, you must create it yourself following Method 1 and then manually integrate the final ESU rollups (KB5022338 for January 2023 – the last ESU for Windows 7 was January 2024 for Embedded POSReady 7).
Since an official "SP3 ISO" does not exist, users typically follow these steps to create a modern, updated offline installer: Windows 7 - Microsoft Lifecycle
If you need a 2023-level Windows 7 64-bit ISO, you must create it yourself following Method 1 and then manually integrate the final ESU rollups (KB5022338 for January 2023 – the last ESU for Windows 7 was January 2024 for Embedded POSReady 7).
Since an official "SP3 ISO" does not exist, users typically follow these steps to create a modern, updated offline installer: Windows 7 - Microsoft Lifecycle