Hantek 2000 series, 2D72 firmware, tools, unbrick Hantek 2D72 and other information

* MCU: STM32F103VET6 (100pin)
* ADC: AD9288BSTZ-40
* FPGA: LATTICE XO2-1200U
* DAC: 3PD5651E
* DMM (multimeter): CS7721CN-1
* OU amplifier at the output of the generator (put different): EL5166, LMH6702

1. Download ST-Link Utility
2. Connect ST-Link V2 to software debug ports on main circuit board (GND, SW_CLK, SW_DAT)
3. In ST-LINK Utility, specify Address: 0x08000000, with the size : 0x80000
4. Connect to Target, or press enter
5. Click save file button (File should be 512kB)

fit DAC902 at position U12
remove R315
R63, R70 = 50 Ohms (R63 was already fitted in my device)
C70, C71 = 20 pF (C71 was already fitted in my device)
fit R65 = 560 Ohm
Change R61 from 1,78 kOhm to 2,2 kOhm as the AWG amplitude of my device was too high with the stock resistor

In the frontend section (see picture from reply #56):
fit EL5166
fit BAV99
change 0 Ohms resistor at the output of the OpAmp to 50 Ohms
change 0 Ohms resistor at pin 3 of OpAmp to 150 Ohms
change 0 Ohms feedback resistor (at OpAmp left side) to 560 Ohms
Mod Picture

• Press F1 and power on the oscilloscope at the same time to enter the programming mode.
  
• Connect the oscilloscope to the computer and open the device manager of the computer.
  
• Find a new device and right click it to update the driver. The driver files are in this path: STMicroelectronics\Software\DfuSe v3.0.5\Bin\Driver.
  
• Open DfuSe Demo software, click "Choose" to select the firmware (***.dfu), and click "Upgrade" to update the firmware. After updated, click "Leave DFU mode" to exit the programming mode.