Firmware files are often very large (sometimes over 10GB). If you no longer need them, you can manually delete them from the 3uTools-Firmware folder to clear space. Firmware Cache:
Here is the information regarding the :
As shown in this example, the actual IPSW file is saved directly inside the Firmware folder, and its filename typically includes the device model, iOS version, and build number. 3utools ipsw location top
Make it a habit to visit your 3uTools firmware location periodically and delete old files to keep your PC running lean and fast. Firmware files are often very large (sometimes over 10GB)
Navigate to the default download folder ( .../3uTools/Downloads/Firmwares ) to import the already downloaded IPSW file. C. Change Download Location Make it a habit to visit your 3uTools
If your C: drive is running low on space, you can change where 3uTools saves these large files: Open 3uTools and click on (gear icon) in the top right. Navigate to the Download Path Firmware Path