To fix the error on 3uTools , you must either switch from Easy Flash to iTunes Flash mode within the software or download a signed iOS firmware version because Apple blocks unsigned software requests . This error typically stops your flashing progress abruptly at the 9% mark during the firmware verification phase.
3uTools may have outdated or overloaded proxy servers. Switch the SHSH server:
Inside 3uTools, navigate to Toolbox -> Reinstall Driver . Once finished, restart your PC and reconnect your iPhone. 5. Use a Different USB Cable or Port how to fix error unable to request shsh on 3utools when top
: Apple stops "signing" older iOS versions shortly after new ones are released. You cannot request SHSH blobs for an unsigned version; verify current signing status on sites like IPSW.me .
If your iPhone is already running an iOS beta or a corrupted firmware, Apple’s validation server may reject the SHSH request. Use iTunes or Finder to do a full factory restore to the latest official iOS first , then try 3uTools. To fix the error on 3uTools , you
Temporarily disable your computer firewall or third-party antivirus software that might be blocking the application network traffic.
: If the error persists or occurs at different percentages (like 19% or 20%), it may indicate a hardware issue with the device's NAND (storage) chip. Summary Table: Troubleshooting Steps Why it works 1 Update 3uTools Fixes internal software bugs and server communication. 2 Verify Signing Ensures Apple still allows the iOS version you chose. 3 Change Flash Mode Switch the SHSH server: Inside 3uTools, navigate to
Confirm the version you have matches the one available on the host.