I have just again a firmware upgrade "dsr _x035_3.7.2.1_de.fl" performed with the serial interface (setup).
I always have the same result when login in the language, only English and 2x Chinese
Switch: DSR2035
Part Number: 520-428-505
Serial Number: 0270150624
EID: 520428-008603-0000
Application 03.07.02.01
Boot 00.00.02.02
OSCAR FPGA 128.128.144.00
Video FPGA 01.00.00.13