If the "New" device status is preventing 3uTools from reading your info automatically, you can try a manual approach. Go to the tab in 3uTools. Locate your ECID and copy it. Navigate to the Flash & JB section, then SHSH (Blobs) .
If the version is "Unsigned" (red), you cannot request new SHSH blobs for it. Check Your Network Connection how to fix error unable to request shsh on 3utools when new
Use the "Query SHSH" feature and manually paste your ECID if prompted, ensuring the model identifier matches your device exactly. Common Workarounds If the error persists despite the steps above: If the "New" device status is preventing 3uTools
Use a port directly on the motherboard (back of the PC) rather than a front-panel port or a hub. Navigate to the Flash & JB section, then SHSH (Blobs)
Sometimes, 3uTools struggles to grab the ECID or necessary device identifiers while the phone is in regular "Normal" mode. Connect your device to your computer.
Manually put your iPhone or iPad into (the steps vary by model).