How to burn firmware to the wireless HDMI video transmitter of COFDM-907T?

How to burn firmware to the wireless HDMI video transmitter of COFDM-907T?

We will use the CH341A programming burn firmware, please check the CH341A Programming Steps for COFDM-907T

1: Connect the programming tool to the USB port of the computer, and connect the HMDI cable on the programming tool to the HDMI port of the transmitter.

2: Download the burning software and decompress it to get the burning program and updated software. Open the programmer software folder.

ZXXY_EDID.zip (update firmware)

https://drive.google.com/file/d/1DlpqyLd6VRz7gpN1ilDDKGcQDQNKIfrM/view?usp=drive_link

CH341A Programmer (update tool driver and programmer)

https://drive.google.com/file/d/11CIHhPS_TScEByZ7V6eeC3WGVafBmJiH/view?usp=drive_link

3: Select the CH341A program to run and open.

4: Click on the chip type in the CH341A programmer.

5. Select 24 EEPROM in the type.

6: Click on the maker in the CH341A programmer.

7. Select COMMN in the vendor

8: Click on the name in the CH341A programmer.

9. Select the 24C02_5V in the name

10: Start to open the firmware, click Open

11: Select the ZXXY_EDID.bin firmware in the BIM folder and click OK to open it

12: You can see that the firmware content area has changed as shown in the figure

13: 12V power supply on the transmitter

14: Click Erase on the CH341A programmer.

15: In the CH341A programmer, you can see that the erase is complete, and click OK.

16: Click on the CH341A programmer to check the blank.

17: In the CH341A programmer, if you see that the chip is blank, click OK.

18: Click Programming in the CH341A programmer, and see that the progress bar in the programming display area is 100%, which means that the programming is OK.

19. Click Verify in CH341A Programmer.

20: In the CH341A programmer, you can see that the verification content is consistent with the buffer, and click OK.

21: Power off, it means that the firmware has been burned, if there is an error in 14-20, please re-operate from 14.

CH341A Software operation notes

1. In the CH341A.EXE 24\25 programmer software, the detection function is only an auxiliary function. Since the datasheet of some chips cannot be found,
   the identification manufacturer\chip ID information of the corresponding chip cannot be obtained, which causes this function to be incomplete, so some chips cannot be detected,
   so the accuracy of the detection function is not 100%.
2. Regarding the detection and identification error problem (referring to MX25L6445 being identified as MX25L6405, etc.), for example, MX25L6405 and MX25L6406, MX25L6445,
   the chip device numbers of the three models are the same, so it leads to misidentification.
3. When the detection target chip is “Unknown”, it does not mean that the programmer cannot burn. You can burn the chip by manually selecting it.
   If there is no corresponding model in the chip list, you can directly select a similar model\brand, that is, select the same capacity.
   There is “COMMON” in the manufacturer item, which stands for universal. The programming instructions for various brands of chips are the same (except SST and ESMT).
   So in the software, model\brand can only be regarded as a name. As long as you select the right chip capacity,
   you can directly burn it (except SST and ESMT).
4. If the chip list does not have the model you need, you can select COMMON in the manufacturer item, and then select the capacity of your corresponding chip.
5. When the last four lines of the detection information content are all $FF, it means that the chip pins are not in good contact with the test socket. Please check whether the chip is placed upside down or the solder joint is poor.
6. If you use the “Auto” button to burn the chip, the error message “Write operation timeout failed!” will appear. At this time, you should use manual operation instead.
   After clicking “Erase”, you need to wait for more than ten seconds and then click “Program”. (Reason 1 may be a compatibility problem of individual chips, and you need to wait for a while to read and write;
   Reason 2 The chip pins are not in good contact with the programmer test socket, The chip does not respond to the instructions issued by the computer).
7. During the read and write operation, it is not recommended to perform other operations (such as browsing the web\QQ\downloading, etc.), which may cause read and write data errors and data verification failure.

Post from File VF-202402