If 3utools isn't working, you might consider trying other tools or methods to request SHSH blobs, such as:
If it’s unsigned → No tool can get SHSH. Period. error unable to request shsh 3utools 9 updated
Error: Invalid ECID. Device is updated beyond firmware compatibility. If 3utools isn't working, you might consider trying
Here's a structured approach to resolving the issue: If 3utools isn't working
For older devices (iPhone X and earlier), SHSH saving still works fine in 3uTools v9. For , you’re better off using:
: If the error occurs while the device is in Recovery Mode, try switching to DFU (Device Firmware Update) Mode