: 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
: Some users on Reddit found that switching from "Easy Flash" to the "iTunes Flash" tab within 3uTools bypasses this specific bug. how to fix error unable to request shsh on 3utools when top
A stable connection is required to reach Apple's verification servers. : If the error persists or occurs at
Although rare, Apple’s servers can be down or experiencing issues. You can check if there are any known issues on Apple's Support page or through DownDetector. 3 Change Flash Mode : Some users on
If the automated request continues to fail, you can try manually retrieving an AP Ticket (SHSH blob):
Temporarily disable firewall and antivirus software that might be interfering with 3uTools:
The most frequent cause of this error is simple: Apple is no longer signing the iOS version you are requesting. When a device is on the “top” (newest public) firmware, Apple often stops signing the previous version within days or weeks. 3uTools will return “Unable to request SHSH” because no valid signature exists for that iOS build. Before any troubleshooting, verify current signing status on sites like ipsw.me . If the firmware is unsigned, you cannot request SHSH blobs for it—period. Your only option is to save blobs for the currently signed top version for future use.
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