In short: The software on your computer cannot talk to the modem chip inside your phone.
Use an original Apple cable directly into your Mac/PC (avoid hubs). 3utools unable to send baseband data
There is no single cause for this error. It generally falls into one of three categories: Software/Environment Issues, Firmware Mismatches, or Hardware Failures. In short: The software on your computer cannot
At this stage, the software has finished writing the main iOS system and is attempting to update the modem firmware. For this to work, the device must request a valid "ticket" from Apple's TSS servers . If the baseband chip cannot communicate or the server handshake fails, the entire restore process crashes, often leaving the phone in a "Search" or "No Service" state if it manages to boot at all. Common Causes & Fixes It generally falls into one of three categories:
Ensure you are using the latest version of 3uTools. Go to Toolbox > iTunes Utility and select Repair Drivers to ensure the connection protocol is stable.
3uTools offers two modes.