Heated Bed not Recognized on Marlin 2.0.1 Firmware

[mgjeffries]

Hi!

I'm attempting to upgrade my printrbot simple metal rev F5 to 2.0.1 (mostly to try get rid of a connection issue I've been having for years). I flashed the board with the Marlin_2.0.1-Printrbot_Simple.Metal_HB_RevF.hex file. It seems like flashing process was successful. When I run M115 I get the following:

FIRMWARE_NAME:Marlin 2.0.1 (GitHub) SOURCE_CODE_URL:https://github.com/MarlinFirmware/Marlin PROTOCOL_VERSION:1.0 MACHINE_TYPE:Printrbot Simple Metal EXTRUDER_COUNT:1 UUID:40ce61d1-2ed0-4530-8304-55e3eeaaebff
Cap:SERIAL_XON_XOFF:0
Cap:BINARY_FILE_TRANSFER:0
Cap:EEPROM:1
Cap:VOLUMETRIC:1
Cap:AUTOREPORT_TEMP:1
Cap:PROGRESS:0
Cap:PRINT_JOB:1
Cap:AUTOLEVEL:1
Cap:Z_PROBE:1
Cap:LEVELING_DATA:1
Cap:BUILD_PERCENT:0
Cap:SOFTWARE_POWER:0
Cap:TOGGLE_LIGHTS:0
Cap:CASE_LIGHT_BRIGHTNESS:0
Cap:EMERGENCY_PARSER:0
Cap:PROMPT_SUPPORT:0
Cap:AUTOREPORT_SD_STATUS:0
Cap:THERMAL_PROTECTION:1
Cap:MOTION_MODES:0
Cap:CHAMBER_TEMPERATURE:0
ok N10 P15 B3
N11 M105*23

Which looks good, but when I try to heat the bed, I get the following:
echo:Unknown command: "M140 S95"

I saw that the February 2019 pre-release 0.8 didn't have the heated bed enabled. Could that be what is happening here? How do I enable the heater?

[russ-go]

I had to compile my own firmware for UBL and heated bed. Hope you got it figured out.