update README.md;

README.md

@@ -17,8 +17,6 @@ Please see the various Makefile's included in the project for more information.
 
 To build the firmware, use the ```make``` command, followed by -f and the correct makefile, followed by the type of board you are using. 
 
-> **_NOTE:_**  The only two known tested targets are ```mmdvm-hs-hat-dual``` and ```mmdvm-hs-hat-dual-usb```.
-
 An example of this would be ```make -f Makefile.STM32FX mmdvm-hs-hat-dual``` for a full duplex modem hotspot, attached to GPIO.
 
 ## Firmware installation
@@ -48,45 +46,6 @@ Resetting device...
 Reset done.
 ```
 
-### Install the firmware with bootloader support for USB connection
-
-If you want to use the device via USB port you have to install a bootloader and build the firmware with bootloader support. As the raw device cannot be used with USB you have to use a USB-serial adapter or STlink device.
-
-* The bootloader (https://github.com/DVMProject/STM32F10X_Platform/blob/527fee72ae2291486304380cb812c48f36122c32/utils/bootloader/generic_boot20_pc13.bin) should be installed starting at offset 0x8000000.
-* The firmware should be installed starting at offset 0x8002000.
-
-An example Using STlink this can be done as follows:
-```
-user@host:~/dvmfirmware-hs$ -f Makefile.STM32FX mmdvm-hs-hat-usb-dual
-...
-user@host:~/dvmfirmware-hs$ ./STM32F10X_Platform/utils/linux64/st-flash write ./STM32F10X_Platform/utils/bootloader/generic_boot20_pc13.bin 0x8000000
-2018-03-02T10:01:04 INFO src/usb.c: -- exit_dfu_mode
-2018-03-02T10:01:04 INFO src/common.c: Loading device parameters....
-2018-03-02T10:01:04 INFO src/common.c: Device connected is: F1 Medium-density device, id 0x20036410
-2018-03-02T10:01:04 INFO src/common.c: SRAM size: 0x5000 bytes (20 KiB), Flash: 0x10000 bytes (64 KiB) in pages of 1024 bytes
-2018-03-02T10:01:04 INFO src/common.c: Attempting to write 7160 (0x1bf8) bytes to stm32 address: 134217728 (0x8000000)
-Flash page at addr: 0x08001800 erased
-2018-03-02T10:01:04 INFO src/common.c: Finished erasing 7 pages of 1024 (0x400) bytes
-2018-03-02T10:01:04 INFO src/common.c: Starting Flash write for VL/F0/F3 core id
-2018-03-02T10:01:04 INFO src/common.c: Successfully loaded flash loader in sram
-  6/6 pages written
-2018-03-02T10:01:05 INFO src/common.c: Starting verification of write complete
-2018-03-02T10:01:05 INFO src/common.c: Flash written and verified! jolly good!
-user@host:~/dvmfirmware-hs$ ./STM32F10X_Platform/utils/linux64/st-flash write dvm-firmware-hs_f1bl.bin 0x8002000
-2018-03-02T10:01:05 INFO src/common.c: Loading device parameters....
-2018-03-02T10:01:05 INFO src/common.c: Device connected is: F1 Medium-density device, id 0x20036410
-2018-03-02T10:01:05 INFO src/common.c: SRAM size: 0x5000 bytes (20 KiB), Flash: 0x10000 bytes (64 KiB) in pages of 1024 bytes
-2018-03-02T10:01:05 INFO src/common.c: Attempting to write 55016 (0xd6e8) bytes to stm32 address: 134225920 (0x8002000)
-Flash page at addr: 0x0800f400 erased
-2018-03-02T10:01:07 INFO src/common.c: Finished erasing 54 pages of 1024 (0x400) bytes
-2018-03-02T10:01:07 INFO src/common.c: Starting Flash write for VL/F0/F3 core id
-2018-03-02T10:01:07 INFO src/common.c: Successfully loaded flash loader in sram
- 53/53 pages written
-2018-03-02T10:01:12 INFO src/common.c: Starting verification of write complete
-2018-03-02T10:01:13 INFO src/common.c: Flash written and verified! jolly good!
-```
-The device should now be usable as /dev/ttyACMx.
-
 ## Notes
 
 **NXDN Support Note**: NXDN support is currently experimental.