Is this some kind of sample device? Other than the vendor ID none of the values in the eeprom on that device look valid.
Updating to 5.0.1 without valid values in the EEPROM will not solve this problem.
Setting values in the EEPROM can be done, however, you will need to talk with customer support at support.multitech.com. To write the EEPROM you need to put a jumper on the board and then write the values using a command like the following example:
mts-id-eeprom –in-file /sys/class/i2c-dev/i2c-0/device/0-0056/eeprom –update –out-format bin –uuid
Jeff