RT809H Programmer Tutorial: LeEco X3(928) EMMC Flashing Guide and USB Upgrade Program.
Boot Burning Mboot Burning
LeEco X3(928) board number MS6A928_MBD_C_H5100 wire connection method: First, solder the CLK, CMD, D0, GND on the motherboard according to the point diagram, disconnect the resistor at the wire connection and short the main chip oscillator.
After powering on the motherboard, open the RT809H programmer software interface. Click on smart identification, type EMMC ISP, voltage 1.8V, and click OK after selection. Click on the software’s left settings, set all parameters, and confirm (usually defaults are fine). Click the erase button and a prompt will pop up: Before writing, the software will automatically erase the corresponding area of EMMC, do you need to manually erase all data in EMMC? Click OK to execute the operation, and it will quickly finish erasing.
Next, click on write, and in the pop-up window, select the file to be written from the computer and import it. The software will automatically write the data, after writing 3%, the boot part has been written to the chip, we can directly click cancel.
Unsolder the previously connected wires for reading and writing EMMC’s ISP colored wires, then reconnect the serial port for viewing print information. This board’s serial port is on the VGA interface; we just need to connect the TV’s VGA to the programmer’s VGA ISP.
Upgrade
First, set the parameters for printing information, open SecureCRT software and connect. After powering on the TV motherboard, it displays print information until it automatically enters the console.
Insert the USB drive that has the manufacturer’s upgrade files copied beforehand. In the console, input the cu command and press enter, it will automatically recognize the files on the USB drive and start upgrading. Please wait patiently during the upgrade process. Once completed, the initial interface appears on the display, indicating successful recovery.
Recognize the Store Name: Home Appliance Repair Forum
RT809H Programmer Taobao Link:
https://item.taobao.com/item.htm?id=551805435687
Copy the link to open it in the mobile Taobao or browser