You can find the necessary software at the following official resources:
Select the Windows 10 Driver package (often bundled as a "Printer Driver" executable). 2. Alternative Support Portals Tysso Prp-085iiit Driver Download Windows 10
This usually means the Baud Rate (for Serial) or the Emulation mode (ESC/POS) is mismatched in the printer settings. You can find the necessary software at the
Download Tysso PRP-085IIIT Windows 10 driver — choose x64 or x86 based on your system. Tysso Prp-085iiit Driver Download Windows 10