Update docs

BUILD.md

@@ -483,6 +483,12 @@ Please check here for detailed instructions:
 
 - make mmdvm_hs_hat: upload the firmware to MMDVM_HS_Hat board (using internal RPi serial port)
 
+- make nano-hotspot: upload the firmware to Nano hotSPOT board (using internal serial port)
+
+- make nano-dv: upload the firmware to NanoDV board (using internal serial port)
+
+- make d2rg_mmdvm_hs: upload the firmware to D2RG MMDVM_HS board (using internal serial port)
+
 - make dfu [devser=/dev/ttyXXX]: upload firmware using USB bootloader. "devser" is optional, and it corresponds to the USB serial port device name. This option permits to perform a reset to enter to booloader mode (DFU). If you don't use "devser", you have to press the reset button of the ZUMspot just before using this command.
 
 - make serial devser=/dev/ttyXXX: upload standard firmware using serial port bootloader method.

README.md

@@ -125,6 +125,7 @@ Download the script (*.sh) that matches with your ZUMspot/MMDVM_HS board:
 - install_fw_nanohs.sh: only for Nano hotSPOT board (BI7JTA)
 - install_fw_nanodv_npi.sh: only for NanoDV NPi board 1.0 (BG4TGO & BG5HHP)
 - install_fw_nanodv_usb.sh: only for NanoDV USB board 1.0 (BG4TGO & BG5HHP)
+- install_fw_d2rg_mmdvmhs.sh: only for D2RG MMDVM_HS board (BG3MDO, VE2GZI, CA6JAU)
 - install_fw_hsdualhat.sh: only for MMDVM_HS_Dual_Hat board (DB9MAT & DF2ET & DO7EN)
 - install_fw_librekit.sh: only for ZUMspot Libre Kit board (KI6ZUM & VE2GZI) or generic MMDVM_HS board with USB interface
 - install_fw_usb.sh: only for ZUMspot USB dongle (KI6ZUM & VE2GZI)