How to fix the "USB device not recognized"in Up Studio?

It is caused by the outdated driver. You need to reinstall the driver for the printer.

1. Go to UP Studio page and download the matching Driver File to your computer system.
2. Copy the directory path in which the downloaded driver file is located.
3. Go to your computer, right click My Computer, select Manage, click Device Manager, find Other devices, right click Unknown Devices, click Update Driver Software, select Browse my computer for driver software, paste the driver file’s directory which you just copied, and then click Next to finished the installation.

After the installation, the UP Studio should be able to recognize the printer.