Do not trust that "Top" means available. Apple can stop signing a version within hours.
Follow the on-screen instructions in 3uTools (under the "Flash & JB" tab) to enter the correct mode.
After entering DFU, 3uTools will show "DFU Device Detected". Now tick "Top" and flash. how to fix error unable to request shsh on 3utools when top
This method often provides a more detailed log of why the request is failing, which can help you identify if it's a hardware ID (ECID) mismatch. 7. The "ECID" Manual Entry In rare cases, 3uTools might misread your device's ECID.
How to Fix "Error: Unable to Request SHSH" on 3uTools When Downgrading or Flashing iOS Do not trust that "Top" means available
: If "Easy Flash" fails, some users report success switching to the iTunes Flash utility within 3uTools.
Sometimes your device is in a "stuck" recovery state that confuses 3uTools. Exiting and re-entering recovery mode resets the USB communication. After entering DFU, 3uTools will show "DFU Device Detected"
Improper driver installation causes connection issues between the phone and the software.
Firmware versions highlighted in green are actively signed and can be flashed freely. Versions marked in red are unsigned.
Select your specific device model and look at the firmware list.
Alternatively, download a fresh install directly from the official 3uTools Download Page. 3. Diagnose and Fix Network Obstructions
