Keep the original front USB while adding a hidden rear USB port for a cleaner OEM-style setup. No more messy front-panel cables — enjoy a more concise, neat, and factory-like interior appearance.
Desay 6RD 035 187A Restore system firmware by External access using TTL
Installation
TTL Adapter (you can buy this on Aliexpress)
Install the driver. Where to find the driver? Open the device manager -> properties -> information -> select the device ID, copy the information and look for a driver for the adapter on the Internet.
In the list of equipment, we look at which com port the computer has assigned to the adapter, by default it is COM3 , but I have problems installing the drivers, so COM6 is assigned
First, we install the firmware with access to the desktop without launching the native shell, in order for us to fix the files that interfere with the normal operation of the radio. Copy the files on the SD card to the root.
Next, install Putty or use another Terminal type.
TTL Configuration
Using another terminal:
115200, 8bit, parity = none, stop bits = 1.5, handshaking = none.
Once connected, you can access the Linux terminal.
Putty;
select Serial Line, specify which port you have assigned to the adapter and the speed of 115200 .
In the Serial tab, disable flow control.
Terminal
If everything is in order, then a terminal window will open. Clamp a space on the keyboard and turn on the radio.We have the following picture, choose the 4 point.
Next, click 1 item
After selecting, the update will start.
You can see it on the radio.
When it's all over, a message will appear in the terminal window.
After everything is fixed, you need to re-flash with the launch of the native shell. Link to the firmware with the native shell Delete the old files from the SD card and copy the new ones. Repeat the flashing process.After that, the radio tape recorder starts with the native shell. All information was taken from the 4pd forum, I just duplicated and described in detail how to do everything. A source of information!I hope it will be useful to someone.Thank you all for your attention!
All other parameters;
Terminal
[1] Upload Bootloader[2] LAUNCH existing Boot Media image[3] Update image via USB[4] UPDATE image from SD/MMC card[5] DOWNLOAD image via USB RNDIS Ethernet[6] Reset TOC[7] Erase MBR[8] Config menu[9] Debug Boot Media[A] Storage Menu[D] Desay OEM Data menu[E] Erase boot media[M] Config New Feature for MMC v4.3/4.4 card
Selection: 8
configure operation menu:[0] IP address : 0.0.0.0[1] Subnet mask: 0.0.0.0[2] DHCP: Enabled[3] MAC address: (0:0:0)[4] Boot delay: 0 seconds[5] Startup image: Enable[6] Program RAM image into Boot Media: ENABLED[7] Bluetooth address:(0:0:0)[E] Set Clock[V] Set Voltage[s] Save Configuration[u] Configure USB PHY[Q] quit to main menu
Selection: D
DESAY SV OEM DATA MENUVersion [vw160704]Build at [2016-07-04 12:03:20][0] Version : vw160704[1] Version type : Release[2] Touch panel type : MXT224 touch[3] GPS type : GSD4E[4] Trace type : No trace[5] Open Touch Calibration : NO[s] Save Configuration:[Q] quit to main menu
Selection: 9
Debug N[1] NAND_ReadSector[2] NAND_WriteSector[3] Dump Flash[Q] Quit to Main menu
Resources;