Check the current signing status of your desired firmware on sites like shsh.host or IPSW.me.
If 3uTools continues to fail, the issue might be with the 3uTools server bridge. Connect your device. Open (or Finder on Mac). Attempt the update or restore there. how to fix error unable to request shsh on 3utools when upd
: An unstable internet connection or a firewall/security software blocking 3uTools can prevent communication with Apple's verification servers. Check the current signing status of your desired
option within the 3uTools Flash & JB section can bypass these internal software errors. Verify Apple's Signing Status how to fix error unable to request shsh on 3utools when upd