section. If it says "No," you cannot flash that version unless you have previously saved SHSH blobs. Use iTunes Flash Mode
If you provide more details about your specific error message or the steps you've taken so far, I can offer more targeted advice.
When 3uTools simply cannot request the necessary SHSH blobs — often because the target iOS version is unsigned and no blobs were saved in advance — alternative tools can help: error unable to request shsh 3utools 9 updated
: Faulty USB cables, loose ports, or minor driver issues can disrupt data packages mid-stream right as the validation segment kicks off. Step-by-Step Solutions to Resolve the Error 1. Upgrade 3uTools to the Latest Version
This forces the request to match what Apple expects. section
: Keep your tools and device software up to date to minimize compatibility issues.
Check the signing status of your firmware before attempting to flash. When 3uTools simply cannot request the necessary SHSH
3uTools for Mac also receives regular updates; make sure you're running a 2026 build that includes improved compatibility with the latest iOS and iPadOS versions.
: Apple stops signing older iOS versions shortly after new ones are released. If you are trying to downgrade to an unsigned version, the SHSH request will always fail. You can check the current signing status on sites like Check Network Stability
Select from the dropdown menu and open the hosts file. Scan the document for any lines containing ://apple.com .
To help find the precise solution for your device, could you let me know: What are you trying to flash? Which iOS version number are you trying to install?