(To upgrade the font library and printer firmware under WINDOWS, firstly install the printer WINDOWS driver. When installing, pay special attention to whether the baud rate is the same as the printer's self-checking, whether the port number is accurate, and the default data bit is changed to 8aip46mch.hex? It is 4610-1nr17 .08 Firmware DBCS/chnm1381 is 4610-1NR Simplified Chinese Font Filler: It takes longer (about 3 times) to burn the firmware than to burn the font. The firmware file is about 3MB, and the font file is about 1M. :896739739)