How To Fix Error Unable To Request Shsh On 3utools When Upd Here

Faulty connections can interrupt the SHSH request process before it completes.

Fix:

Sometimes Apple’s signing/gSudo servers are temporarily down. how to fix error unable to request shsh on 3utools when upd

Fix:

For downgrades to unsigned firmware using blobs, your device must be in "Pwned DFU" mode (a special state that disables signature checks). Faulty connections can interrupt the SHSH request process

If you are an advanced user trying to downgrade to an unsigned iOS version, the error appears because you have no saved blobs. But if you have saved SHSH blobs from a previous jailbreak (using TSS Saver), you can manually feed them into 3uTools.

Steps for advanced users:

This bypasses Apple’s server entirely. Without valid saved blobs matching your device’s ECID, you cannot flash an unsigned iOS version.